Method and device for the gasification of combustible material in the furnace with a fluidized pillow


F23C11/02 -

 

(57) Abstract:

The invention relates to a method and apparatus for the gasification of combustible material, such as waste coal, and so on, which is gasified to obtain a combustible gas containing a sufficiently large number of combustible components to melt the ash under its own heat. Furnace 2 from fluid cushion has the shape of an approximately circular cross horizontal cross-section. Movable cushion 9, in which the fluidized medium is deposited and dispersed, is formed in the Central zone of the furnace, and fluid cushion 10, in which the fluidized medium is actively fluidized, is formed in a peripheral zone of the furnace. Fluidized medium is rotated in the upper part of the movable cushion 9 of the upper part of the fluid cushion 10, circulating thus two pillows. Combustible material 11 is melted in the upper part of the movable cushion 9 and gasified, forming a combustible gas during circulation together with the fluidized medium. The amount of oxygen supplied to the furnace 2 from fluid cushion, set in the same amount, which is contained in the amount of air of not more than 30% of teoaes in the range from 450 to 650oC, so that the resulting fuel gas contains a large amount of flammable materials. Combustible gas and fine particles obtained in the furnace 2 from fluid cushion, served in a furnace for combustion of the molten mass, where they are burned at high temperatures and the resulting ash is melted. The technical result is to obtain a combustible gas with high efficiency. 2 C. and 20 C.p. f-crystals, 2 tab., 14 Il.

The area of industrial applications.

The invention concerns a method and device for the gasification of combustible material in the combustion chamber from fluid cushion in which a combustible material is gasified in the combustion chamber from fluid bag, and the resulting combustible gas and fine particles are burned at high temperature in the furnace with molten combustible mass and the resultant ash is melted.

The relevant prior art.

In recent years, were required to reduce waste, such as municipal waste, waste plastic materials, etc. that accumulate in large quantities by burning and effectively use the resulting combustion heat. Because the result of waste incineration ash is devaney components of heavy metals, to delete a product of combustion by the regenerate. Regarding these problems, JP-B2-62-35004 (Japanese patent application published after examination) offers a method and device for combustion of solid materials. In the proposed method of burning solid material is cleaved by thermal method in a pyrolysis furnace with a fluidized pillow and the products of pyrolysis, i.e., combustible gas and solid particles are introduced into cyclenbuy the furnace for combustion in which the fuel component is burned at high combustion efficiency in an atmosphere of compressed air, and ash is facing surface as a result of turbulences and thus melts. Molten ash flows down along the surface of the wall and forming the molten slag is removed through the discharge opening into the chamber with water, where it hardens.

The method described in JP-B2-62-35004, has however the disadvantage that all fluid cushion is in the active fluidized state, a large amount of combustible components, unreacted, is taken out from the furnace together with the combustible gas produced in the furnace. As a result not obtained a high degree of gasification. Next, gasified m, the within particle diameter ranging from 0.5 mm to 3 mm, and small crushed waste a few millimeters in size. Gasified material having a larger particle size than stated above, will block the fluidization; gasified material having a particle size smaller than stated above, will be made from combustion chamber with a combustible gas as a combustible component, unreacted, without complete gasification. Respectively for the known furnaces from fluid cushion reservation chopping gasified material and preparation of particles of uniform size by using razmelchitel or similar device for pre-processing, which is performed before gasified material is introduced into the furnace. Thus, the gasified materials, particle diameter which does not correspond to a particular range may not be used, and the performance decreases to some extent.

In order to solve the above problem, JP-A-2-147692 (Japanese patent application KOKAI with the published description) provides a method of gasification in fluidized cushion and the furnace for gasification from fluid cushion. In the way ha is ecnomy horizontal cross-section and the velocity of the mass fluidizing gas, fed stream in the furnace in the upward direction from the bottom of the Central zone of the furnace, is less than the velocity of the mass fluidizing gas fed from two angular zones of the lower part of the furnace. The upward flow fluidizing gas changes its direction to the Central zone of the furnace, getting into position over each corner area of the bottom side of the chamber. Thus, the movable cushion, which settles the fluidized medium is formed in the Central zone of the furnace and fluidized pillow, which actively fluidities the fluidized medium is formed in each corner zone of the furnace. Combustible material is fed into a flexible cushion. Fluidizable gas represents, or a mixture of air and steam, or a mixture of oxygen and steam, and the fluidized medium is a siliceous sand.

However, the method according to the patent JP-A-2147692 has the following disadvantages:

1. Endothermic gasification reaction and the combustion reaction occur simultaneously in all the moving and fluidized pillows. Accordingly volatile component that is ready for gasification, burning at the same time, when he gasified, while still coal (converted into a coal of Waki together with combustible gas, produced in the furnace. Thus, it cannot be done with high efficiency gasification.

2. In that case, when produced in the furnace combustible gas is burned for use in power generating installation with a combined steam and gas turbine, furnace with a fluidized air bag must be under pressure. In this case, however, since the furnace has a rectangular horizontal cross-section, it is difficult to construct the furnace in the shape of the chamber under pressure. The pressure of the gas in the furnace is determined mainly a result of the application of the combustible gas. In the case when gas is to be used as a regular gas for combustion, the pressure in the furnace can be up to several thousand mm Ag. However, when the combustible gas is used as fuel for the gas turbine, the pressure in the furnace should be on the order of several kgf/cm2. When gas is used as fuel for a combined power generator with high efficiency gasification, respectively, is used, the pressure in the furnace is higher than a dozen kgf/cm2.

When processing waste, such as municipal waste, about what dnee time increased the demand for technologies for waste treatment, ensure the protection of the environment, such as measurement of levels of dioxin device for neutralization of dust, the efficiency of extraction of energy, and so on, the Level of incineration of municipal waste in Japan is approximately 100,000 tonnes per day and the extracted energy from all municipal waste is equivalent to approximately 4% of electricity generated in Japan. Currently, the coefficient of utilization of energy from municipal waste is less than 10%. However, if the ratio of energy utilization can be increased, the level of fossil fuel consumption, respectively, would decrease, so would it be possible to contribute to reducing global warming.

However, the existing combustion system causes the following problems:

1. The efficiency of the energy production can not be increased in connection with the problem of corrosion under the action of HCl.

2. Prevention of pollution of the environment by equipment for control of HCl, NOx, SOx, mercury, dioxin, etc. have become complex by increasing its size and cost.

3. There is a tendency to install equipment for melting burnt ash due to the more dense the advantage is to the next. For this purpose, however, you must create additional equipment and rely on the consumption of large amounts of energy.

4. Used expensive equipment for removal of dioxin.

5. It is difficult to recover valuable metals.

The essence of the invention.

(Problems, which are solved by the invention).

The purpose of the present invention is to solve the problems described above described prior art and to produce combustible gas at high efficiency, which contains a large amount of combustible components obtained from combustible materials, such as waste, such as municipal waste, waste plastics, and so on, or of combustible materials such as coal.

Another objective of the present invention is to develop a method and device for the gasification of combustible material, which is suitable for energy and which can produce a combustible gas under high pressure.

Another objective of the present invention is to create a method and a device for the gasification and combustion of the molten mass, which is suitable for receiving a combustible gas containing big the gas.

Another objective of the present invention is to provide a combustible gas homogeneous gas containing turned into coal substance and tar, with a high rate of calories to generate a high temperature of 1300oC or higher due to its own heat.

Another objective of the present invention is to create a gasification device, from which the non-combustible residues may uninterrupted be deleted without any problems.

Another objective of the present invention is a method and device for gasification, which provide for the recovery of valuable metals from the waste in the furnace with a fluidized pillow with low atmospheric pressure, without their oxidation.

Means for solving these problems.

The present invention provides a method of gasification of combustible materials in the furnace with a fluidized pillow to produce combustible gas. In the method according to the present invention a furnace with a fluidized pillow has an approximately circular shape transverse horizontal section. Fluidizable gas which is fed into the furnace with a fluidized pillow has a Central flow fluidtech, and peripheral flow fluidizing gas, which is delivered in the form of upward flow from the lower peripheral zone of the furnace inside the furnace. The Central flow fluidizing gas has a lower velocity of the mass than the peripheral flow fluidizing gas. The upward flow fluidizing gas and the fluidized medium is returned or reflected in the upper portion of the peripheral zone of the furnace in the Central zone of the furnace using a deflecting wall, forming a movable cushion, in which the fluidized medium (mainly siliceous sand) is deposited and dispersed in the Central zone of the furnace, thus forming a fluid cushion which actively fluidized fluidized medium in the peripheral zone of the furnace, so that a combustible material, which is fed into the furnace, gasified, producing a combustible gas, circulating together with the fluidized medium from the lower zone of the mobile bags for fluid cushion and from the upper zone of the fluidized pillows to the movable cushion. The oxygen content in the Central flow fluidizing gas is a value not greater than the oxygen content in the peripheral flow fluidizing gas, and the temperature of fluidizer the Otok fluidizing gas is selected from the three gases, i.e. from the vapor from the gas mixture of steam and air and from the air. Peripheral flow fluidizing gas of the three gases, i.e. oxygen from the gas mixture and air and from the air. Accordingly, there are 9 possibilities of joint combining Central and peripheral flows fluidizing gas, as shown in the table. 1. An appropriate combination may be selected depending on, what is more important: the efficiency of gasification or savings.

In table. 1 combination 1 provides the highest efficiency of gasification. However, because the amount of oxygen consumed is large, it increases the cost. The efficiency of gasification is reduced, first, when the amount of oxygen consumed is reduced and, secondly, when the consumption of steam is reduced. In this case, similarly reduces the cost. It is also possible to use the oxygen of low purity, which is obtained by the use of membranes for oxygen enrichment. The combination of N-9, which is a combination of air and air is known as air consumption for normal combustion process. In the present invention a furnace with fluidizovani wall, provided in the upper portion of the peripheral zone of the furnace, is longer than the projection of the lower part of the deflector wall, which is used when the furnace with a fluidized pillow has a rectangular horizontal cross section. As a consequence, the flow velocity of the peripheral fluidizing gas can be increased and, as a consequence, the oxygen supply can be increased. Accordingly, can increase the efficiency of gasification.

Preferably in the method in accordance with the present invention the flow fluidizing gas further includes an intermediate flow fluidizing gas that is drawn into the chamber from the intermediate zone of the lower part of the furnace between the Central and peripheral zones of the lower part of the furnace. Intermediate flow fluidizing gas is the velocity of the mass, which is an intermediate value between the speed of the Central mass flow fluidizing gas and the peripheral velocity of the mass flow fluidizing gas. Intermediate flow fluidizing gas is one of the two gases, i.e., a gas mixture of steam and air, and air. Accordingly, there are 18 possibilities of joint combining the center is mainly at this level, so it gradually increased from the Central zone of the furnace to a peripheral zone of the furnace. There are 15 preferred combinations of gases, as shown in the table. 2.

An appropriate combination may be selected from those combinations that are shown in the table. 2, in accordance with what is given more attention: the efficiency of gasification or savings. In table. 2 the combination of N 1 provides the highest efficiency of gasification. However, because the amount of oxygen consumed is large, the cost is high. The efficiency of gasification is reduced, first, when the amount of oxygen consumed is reduced and, secondly, when the consumption of steam is reduced. In this case, the cost is similarly reduced. Used in the table. 1 and 2, the oxygen may be oxygen of high purity. It is also possible the use of low purity oxygen, which is obtained by the use of membranes for oxygen enrichment.

When the furnace with a fluidized pillow is made of large size, intermediate flow fluidizing gas consists mainly of a few fluidizing gases, which are served from multiple ContentsThe furnace. In this case, the concentration of oxygen fluidizing gas is set mainly at this level that the concentration of oxygen is at its lowest level in the Central zone of the furnace, and it increases gradually towards the peripheral zone of the furnace.

In the method in accordance with the present invention fluidizable gas which is fed into the furnace with a fluidized pillow, contains an amount of oxygen contained in the amount of air that does not exceed 30% of theoretical amount of combustion air needed for combustion of combustible material. Non-combustible material is removed from the furnace with a fluidized-bed of its peripheral zone located in the lower part of the furnace, and sorted, and sand, obtained as a result of this sort is returned to the inside of the furnace with a fluidized pillow. Combustible gas and fine particles obtained in the furnace with a fluidized pillow, burn at a high temperature of 1300oC or higher in the furnace for combustion of the molten mass, for example in the melting furnace and the ash melts there. The gas discharged from the furnace for combustion of the molten mass, is used to rotate the gas turbine. The pressure in the furnace with fluidization may be waste coal, and so forth.

Additionally, the present invention provides a device for the gasification of combustible material in the combustion chamber from fluid cushion to produce combustible gas. Furnace with a fluidized pillow includes the following main elements: a side wall having the shape of an approximately circular cross-section; a device for dispersing fluidising gas, which is located in the lower part of the furnace; an exhaust channel for non-combustible material, which is located on the outer peripheral part of the device for dispersing fluidising gas; Central feed device for feeding fluidizing gas inside the furnace from the Central zone of the device for dispersing fluidising gas, so fluidizable gas is directed vertically upwards; peripheral feed device for feeding fluidizing gas inside the furnace from the peripheral zone of the device for dispersing fluidising gas, so fluidizable gas is directed vertically upwards; deflecting wall for changing the direction fluidizing gas and fluid medium flowing vertically upwards to the Central zone of the furnace in position above a peripheral input device is t fluidizable gas, with a relatively low velocity of the mass and the relatively low concentration of oxygen. Peripheral input device delivers fluidizing gas having a relatively high velocity of the mass and a relatively high concentration of oxygen.

In the device in accordance with the present invention a furnace with fluidizable cushion may further include an intermediate feed device for feeding fluidizing gas inside the chamber from the intermediate annular zone located between the Central and peripheral zones of the device for dispersing fluidising gas, so fluidizable gas is directed vertically upwards. Intermediate feeding device feeds fluidizable gas with the velocity of the mass, which is an intermediate value between the velocities of the masses fluidizing gases supplied to the Central and peripheral feeding devices, and oxygen concentration, which is an intermediate value between the concentrations of oxygen fluidizing gases supplied to the Central and peripheral feeding devices. Peripheral input device may be a feed box having an annular shape. Furnace with a fluidized and furnace with a fluidized pillow. Inlet for combustible material can be installed to discharge a combustible material in the area above the Central feeder. Device for dispersing fluidising gas can be performed in such a way that its peripheral portion is lower than its Central part.

Output channel for non-combustible material may have an annular portion which is located on the outer peripheral part of the device for dispersing fluidising gas, and a conical section that extends downward from the annular section in such a way as to make the seal as soon as the distance to the annular area increases in a downward direction. Output channel for non-combustible material may have a discharge device for controlling the volume, the first rotary sealing valve, a rotary shut-off valve, the second rotary sealing valve, which is installed in series.

The device in accordance with the present invention may include a furnace for combustion of the molten mass, such as a melting furnace, in which the combustible gas and fine particles produced in the furnace with pleisiomonas has a primary cylindrical combustion chamber with about a vertical axis and the input channel for the supply of combustible gas and fine particles, received in the chamber from fluid cushion in the primary cylindrical combustion chamber, so that the combustible gas and fine particles rotate around the axis of the primary combustion chamber. Furnace for burning molten mass is then a secondary combustion chamber, which is connected with a cylindrical primary combustion chamber, and a discharge channel provided in the lower part of the secondary combustion chamber so that the molten slag can be discharged through the discharge channel. Exhaust gas from the secondary combustion chamber of the furnace for combustion of the molten mass is introduced into the boiler for heating the waste in the heater for pre-heating of air, so that heat is extracted from the waste. Exhaust gas from the secondary combustion chamber of the furnace for combustion of the molten mass can be used to rotate the gas turbine. The exhaust gas may be injected into the dust collector, which removes the dust before the gas is released into the atmosphere.

Operation.

In a method or device in accordance with the present invention a furnace with a fluidized pillow has approximately the form of a round cross-section and consequently can obrazec be maintained at the level not lower than the atmospheric pressure and it is easy to increase the pressure of fuel gas, obtained from combustible material submitted to the furnace. Flammable gas under high pressure can be used as fuel for the gas turbine or power plant with combined gas-steam turbine that can operate with high efficiency. As a consequence, the use of fuel gas in such a setting makes it possible to increase its efficiency in extracting energy from combustible material.

In the method and device in accordance with the present invention, when the purpose of their application is the processing of waste, the pressure in the furnace with a fluid cushion is stored mainly at the level not higher than the atmospheric pressure to prevent leakage of unpleasant odors or harmful combustible gas from the furnace. In this case, the wall of the furnace may well resist the pressure difference existing between the inner and outer walls of the furnace as the furnace has an approximately circular shape in horizontal cross section.

In the present invention the velocity of the mass of the Central flow fluidizing gas fed into the furnace with a fluidized pillow, set lower than the velocity of the mass p is Inoi side of the chamber turns to the Central part of the furnace, forming a movable cushion, in which the fluidized medium is deposited and dispersed in the Central zone of the furnace, and thus forms a fluid cushion, in which the fluidized medium is actively fluidized in the peripheral zone of the furnace. Thus, a combustible material, which is fed into the furnace, gasified to produce a combustible gas which circulates together with the fluidized medium from the lower part of the movable cushion to the fluid cushion and the upper part of the fluidized pillows to the movable cushion. First, the volatile component of combustible material gasified by heat fluid environment (mainly siliceous sand) in a rolling cushion that moves down to the center of the furnace. Since the oxygen content in the Central flow fluidizing gas, which forms a movable cushion is relatively low, the combustible gas formed in the movable cushion, practically does not burn, but moves up to the free capacity together with the Central flow fluidizing gas, thus forming a valuable high-calorie fuel gas of good quality.

Combustible material, such as a stationary coal (converted into coal ve is in the fluid cushion and burns due to contact with a peripheral thread fluidizing gas, which has a relatively high content of oxygen in the fluid cushion, varying in the combustible gas and the ash and thus generating heat from combustion, which supports the inside of the furnace temperature in the range of from 450 to 650oC. the Fluidized medium is heated with a heat of combustion and the heated fluid environment changes direction over the Central zone of the furnace and then moves down to the mobile pillow, while maintaining the temperature in the movable cushion at the level required for gasification of the volatile components. Since the entire furnace, in particular the Central zone of the furnace, is located in conditions of low oxygen content, it is possible to obtain a combustible gas having a high content of combustible components. Further, the metals contained in the combustible material can be recovered as valuable oxygenated substances from non-combustible facing material.

In the present invention the combustible gas and ash together with other small particles, which are obtained in the furnace with a fluidized pillow, can burn in the furnace for combustion of the molten mass. In this case, since the combustible gas contains a large amount of combustible components, the temperature in topk the use of fuel for heating. Thus, the ash can melt sufficiently in the furnace for combustion of the molten mass. Molten ash can be removed from the furnace for combustion of the molten mass and it can be cured using known methods, for example by cooling water. Accordingly, the amount of ash is greatly reduced and harmful metals contained in the ash, harden. As a result, the ash can be transformed into a form in which it can be shipped.

The above and other objects, features and advantages of the present invention are explained in more detail in the following description of the preferred variants of its performance with reference to the accompanying drawings, in which identical reference numbers refer to identical elements.

Description of the drawings.

Fig. 1 depicts schematically a view in vertical section showing the main part of the device for gasification in accordance with the first embodiment of the present invention.

Fig. 2 depicts schematically a view in horizontal section of the furnace with a fluidized airbag device for gasification is shown in Fig. 1.

Fig. 3 depicts shamiana execution of the present invention.

Fig. 4 depicts schematically a view in horizontal section of the furnace with a fluidized airbag device for gasification, shown in Fig. 3.

Fig. 5 depicts schematically a view in vertical section of a device for gasification in accordance with the third embodiment of the present invention.

Fig. 6 depicts schematically a view in vertical section of a device for gasification in accordance with the fourth embodiment of the present invention.

Fig. 7 depicts a flow diagram showing an example of the process of refining gas obtained in the device for gasification in accordance with the present invention.

Fig. 8 depicts a flow diagram showing an example of a process in which melted ash.

Fig. 9 depicts in cross section axonometric projection device for the gasification and combustion of the molten mass in accordance with the fifth embodiment of the present invention.

Fig. 10 depicts a layout device for gasification in fluidized cushion and burning of the molten mass in accordance with execution of the present invention, which is used in listwa for gasification in fluidized cushion and burning of the molten mass in accordance with execution of the present invention, used in combination with a device for cooling gas.

Fig. 12 depicts a layout device for gasification in fluidized cushion and burning of the molten mass in accordance with execution of the present invention, which is used in combination with a boiler for heating the waste and the reaction tower.

Fig. 13 depicts a layout device for gasification in fluidized cushion and burning molten mass by type of cogeneration in accordance with an embodiment of the present invention.

Fig. 14 depicts a flow diagram showing the process of gasification under pressure combined cycle power generation method of gasification in fluidized cushion and burning of the molten mass in accordance with the embodiment of the present invention.

Detailed description of preferred embodiments of the present invention.

Variants of the present invention are described in detail below with reference to the accompanying drawings. However, it should be noted that the present invention is not limited to these options. Next cell battery (included) the mi elements, and therefore redundant description is omitted.

Fig. 1 depicts schematically a view in vertical section showing the main part of the device for gasification in accordance with the first embodiment of the present invention, intended to perform a method of gasification in accordance with the present invention. Fig. 2 depicts schematically a view in horizontal section of the furnace with a fluidized airbag device for gasification is shown in Fig. 1. With reference to Fig. 1 device for gasification has the furnace 2 from fluid cushion. Fluidizers gas is fed into the furnace 2 from fluid cushion through the device 106, dispersing fluidizable gas. Fluidizable gas consists mainly of the Central flow fluidizing gas 7, which is supplied from a Central zone 4 lower side of the chamber inside the chamber 2 in the form of vertical flow and peripheral flow fluidizing gas 8, which is supplied from the peripheral zone 3 lower side of the chamber 2 in the form of a vertical flow.

As shown in the table. 1 Central thread fluidizing gas 7 is one of the three gases, such as steam, gas mixture of steam and air and the air, and peripheral flow fluidizing gas 8 is robotrules thread fluidizing gas 7 is lower than the oxygen content in the peripheral flow fluidizing gas 8. The amount of air around fluidizers gas is not higher than 30% of theoretical amount of air required for combustion of combustible material 11. The inner part of the furnace 2 is in conditions of low atmospheric pressure.

The velocity of the mass of the Central flow fluidizing gas 7 is set lower than the peripheral speed of the flow fluidizing gas 8, and vertical flow fluidizing gas in the upper portion of the peripheral zone of the furnace 2 changes the direction of the Central zone of the furnace 2 under the action of the deflector 6. Thus, the movable cushion 9, in which the fluidized medium (mainly siliceous sand) is deposited and dispersed, is formed in the Central zone of the furnace 2 and the fluid cushion 10, in which the fluidized medium is actively fluidized, is formed in a peripheral zone of the furnace 2 from fluid cushion. Fluidized medium moves upward in the fluid cushion 10 in the peripheral zone of the furnace, as shown by arrows 118. Then fluidized environment changes direction under the action of the deflector 6 so that it moves to the lower part of the movable cushion 9 and moves down in the movable cushion 9. Then fluidized medium moves is to shown by arrows 112. Thus, the fluidized medium is circulated within the fluid and the movable cushion 10 and 9, as shown by arrows 118 and 112.

Combustible material 11 is fed into an upper movable cushion 9 of the input channel 104, intended for the supply of combustible material. Combustible material 11 moves down in the movable cushion 9 together with the fluidized medium and as this happens, a combustible material 11 is heated by a hot fluid medium, the main volatile components contained in the combustible material 11, is gasified. Because at this stage there is no oxygen or there is a small amount in the movable cushion 9, the resulting gas, which consists mainly of gasified volatile components, does not burn, but occurs through the sliding cushion 9, as shown by arrows 116. Consequently, the movable cushion 9 forms a zone of gasification G. the resulting gas then moves to free the vessel 102 in the upward direction, as shown by the arrow 120, and then exits through output channel 108 for gas as the combustible gas 29.

Material that is not gasified in the moving bed 9, basically turned into coal substance (fixed carbon) and tar 114, moves the CRP 2, together with the fluidized medium, as shown by arrows 112, and burns with a peripheral thread fluidizing gas 8 having a relatively high oxygen content and thus partially oxidized. Fluid cushion 10 forms a zone of S, which oxidize combustible material. In fluid cushion 10 fluidized medium is heated to high temperature due to heat from the combustion fluid cushion 10. Fluidized medium heated to a high temperature, is rotated in the direction of using a deflecting wall 6 to move to the movable cushion 9, as shown by arrows 118, used again as a source of heat for gasification. The temperature of the fluid cushion 10 is maintained in the range from 450 to 650oC, while retaining the ability to effectively control the combustion reaction.

In accordance with the device for the gasification 1, is shown in Fig. 1 and 2, the gasification zone G and zone of oxidation of S are formed in the furnace 2 from fluid cushion and fluid environment serves as a medium for heat transfer in two zones G and S. Thus, valuable high-calorie fuel gas of good quality is obtained in the zone of haifaa in the oxidized zone S. As a consequence, the efficiency of gasification of combustible material can be increased and can result in a combustible gas of good quality.

As shown in Fig. 2, which depicts a horizontal section of the furnace 2 from fluid cushion, the movable cushion 9, which forms a zone of gasification G, has a round shape in the Central zone of the furnace, and fluid cushion 10, which forms the zone of oxidation of S is koltseobrazno around the movable cushion 10. By giving the device for the gasification 1 of cylindrical form, you may experience constant high pressure in the furnace. You can also include a pressure vessel (not shown) separately from the device for the gasification of 1 instead of the structure in which the pressure occurs in the furnace in the result of the gasification furnace.

Fig. 3 depicts schematically a view in vertical section of a main portion of the device for gasification in accordance with a second embodiment of the process of gasification of the present invention. Fig. 4 depicts schematically a view in horizontal section of the furnace with a fluidized airbag device for gasification, shown in Fig. 3. In the device for the gasification according to the second variant is which is fed into the furnace 2 with the fluidized bed of the intermediate zone in the lower part of the furnace, located between the Central and peripheral zones in the lower part of the furnace, in addition to the Central flow fluidizing gas 7 and the peripheral flow fluidizing gas 8. The velocity of the mass of the intermediate flow fluidizing strip 7' is selected as an intermediate speed between the speeds of the masses of the Central and peripheral flows fluidizing gases 7 and 8. Intermediate flow fluidizing gas 7' represents one of the three gases, such as steam, gas mixture of steam and air and the air.

In the device for the gasification shown in Fig. 3, the Central flow fluidizing gas 7 is one of the three gases, such as steam, gas mixture of steam and air and the air, and peripheral flow fluidizing gas 8 is one of the three gases, for example oxygen, a gas mixture of oxygen and air and the air in the same manner as in the case of a device for the gasification shown in Fig. 1. The oxygen content in the intermediate flow fluidizing strip 7' is selected as an intermediate content between the content of oxygen in the Central flow and peripheral flow fluidizing gas 7 and 8. As a consequence, there are 15 preferred combinations fluid is increased, when increasing the distance from the center of the furnace 2 from fluid cushion in the direction to the peripheral area. The amount of oxygen around fluidizers gas is set the same, what is contained in the amount of air that does not exceed 30% of theoretical amount of air needed for combustion of combustible material 11. The inner part of the furnace 2 is in conditions of low atmospheric pressure.

In the device for the gasification shown in Fig. 3, the movable cushion 9, in which the fluidized medium is deposited and diffused, is formed in the Central zone of the furnace 2, and a fluid cushion 10, in which the fluidized medium is actively fluidized, is formed in a peripheral zone of the furnace 2 from fluid cushion in the same manner as in the case of a device for the gasification shown in Fig. 1. Fluid medium circulates in the mobile and fluid cushions 9 and 10, as shown by arrows 118 and 112. Intermediate cushion 9', in which the fluidized medium is dissipated mainly in the horizontal direction, is formed between the movable cushion 9 and the fluid cushion 10. Movable cushion 9 and the intermediate cushion 9' form C is which is discharged into the upper zone of the movable cushion 9, heated during its downward movement in the movable cushion 9 together with the fluidized medium, while helping to gasification of the volatile components of the fuel material 11. Turned into coal substance and tar together with a part of the volatile components that were not gasified in the movable cushion 9 are moved to the intermediate cushion 9' and fluid cushion 10 together with the fluidized medium, particularly when this gasifiers and partially burning. The material that did not ratifitsirovala in the intermediate cushion 9', basically turned into coal substance and tar, moving in a fluid cushion 10 in the peripheral zone of the furnace together with the fluidized medium and burns in the peripheral flow fluidizing gas 8 having a relatively high oxygen content. Fluidized medium is heated in the fluid cushion 10 and then circulates to the movable cushion 9, where it heats the combustible material in the movable cushion 9. The density of oxygen in the intermediate cushion 9' is selected in accordance with the type of combustible material (for example, depending on the level of the volatile components or the level of content turned into coal chemicals and tar). This means that D to be low so basically run the gas, or the oxygen density should be high, so basically you through the process of oxidation by burning.

As shown in Fig. 4, which depicts a view in horizontal section of the furnace 2 from fluid cushion, the movable cushion 9, which forms a zone of gasification, is formed in the Central zone of the furnace in the form of a ring, and an intermediate cushion 9' is formed intermediate flow fluidizing gas 7' along the outer periphery of the movable cushion 9. Fluid cushion 10, which forms the zone of oxidation, is formed in a ring shape around the intermediate cushion 9'. The discharge hole 5 for non-combustible material having the form of a ring located on the periphery of the fluid cushion 10. When performing a device 1 for supplying gas to the cylindrical form may constantly experience high pressure in the furnace. The pressure in the furnace may be using the device for the gasification or by using a vessel with a high pressure, which is provided separately outside the device for gasification.

Fig. 5 depicts schematically a view in vertical section of a device for gasification in accordance with the third parenteral 11, which is a combustible material, such as waste, is fed into the furnace 2 from fluid cushion dual damper 12, the compressor charging device 13 and a device for loading of waste 14. Compressor loading unit 13 compresses the gasified material 11 in the form of a tube, sealing the atmosphere in the furnace. Compressed waste in the form of a tube are crushed crushing device (not shown) and fed into the furnace 2 from fluid cushion device for loading waste 14.

In the device for gasification by drawing 5 Central flow fluidizing gas 7 and the peripheral flow fluidizing gas 8 are served in the same manner as in the embodiment shown in Fig. 1. Consequently, the zone of gasification and oxidation in the atmosphere of reduced pressure is formed in the furnace 2 from fluid cushion in the same way as the embodiment according to Fig. 1. Fluidized medium is used for heat transfer in two zones. In the area of gasification is obtained valuable high-calorie fuel gas of good quality; in the zone of oxidation converted into coal substance and tar, which hardly is gasified, efficient burn. Thus, it is possible to reached the data in Fig. 5, the blower 15 is provided to connect the double damper 12 and the free capacity of 102 in the device for the gasification 1, so that the gas seeping from the chamber 2 into the double damper 12 through the compressor loading device 13, when the compression ratio of waste is insufficient, is returned to the furnace 2 under the action of the blower 15. Mainly blower 15 sucks the appropriate amount of air and gas from the double damper 12 and returns it to the furnace 2, so that the pressure in the upper part of the double damper 12 is equal to the atmospheric pressure.

Further, the device for gasification, shown in Fig. 5 has a discharge channel 5 for non-combustible material, conical tray 16, the discharge device 17, regulate the volume, the first rotary sealing valve 18, the valve 19, the second rotary sealing valve 20 and the discharge hole 23, equipped with a drum, which are arranged in the above order and operate as follows:

(1) In the position in which the first rotary sealing valve 18 is open, while the second rotary valve 20 is closed and the furnace is sealed with a second rotary valve 20, the discharge device 17, regularbusiness tray 16 to the rotary shut-off valve 19.

(2) When the rotary shut-off valve 19 receives a predetermined number of non-combustible material, the discharge device 17, regulate the volume, turn it off, and the first rotary valve 18 is closed, so that the furnace is sealed by the first rotary valve 18. Next, the discharge valve 22 is opened so that the pressure in the rotary shut-off valve 19 is set at atmospheric pressure. Then, a second rotary valve 20 is fully open, and opens the rotary shut-off valve 19, passing the discharge to the discharge device 23 non-combustible material.

(3) After the second rotary valve 20 is completely closed, the compensating valve 21 opens. After the pressure in the first rotary valve 18 and the pressure in the conical tray 16 are balanced with each other, the first rotary valve 18. Thus, the process begins again with the first stage (1).

These stages are (1) to (3) are repeated automatically.

The discharge device 23, which is equipped with a drum, runs continuously. Thus, non-combustible material of large size is discharged out of the system through the drum, and sand and non-combustible material United noncombustible material 28 is removed using a classifier 25, the sand is returned to the device for the gasification 1 through the closed hopper 26. In this mechanism for discharging non-combustible material two rotary valve 18 and 20 do not receive non-combustible material, but only performs the function of a seal. Accordingly, it is possible to prevent delay of non-combustible material on the sealing areas of the first and second rotary valves 18 and 20. In that case, when the pressure in the furnace may have a slight negative value, the function of the seal is not required.

Fig. 6 depicts schematically a view in vertical section of a device for gasification in accordance with the fourth embodiment of the present invention. In the device for the gasification shown in Fig. 6, the gasified feed material 11 and the operation to seal the furnace relevant to this submission are performed by using the combination of a pair of cut-off valves 19 and 19' and a pair of rotary valves 18 and 20, first and second, in the same way as in the case of the mechanism for discharging non-combustible material, shown in Fig. 5. Compressor unloading device 13 used in the embodiment depicted in Fig. 5, is missing. In the embodiment depicted in Cartesian 22 and a blower (not shown). Next, after the first rotary valve 18 is closed, the compensating valve 21 is opened to compensate for the pressure in the rotary shut-off valve 19 with the pressure in the furnace.

Fig. 7 depicts a flow diagram showing an example of the process of refining gas obtained in the device for gasification in accordance with the present invention. In the refining process, shown in Fig. 7, in a device for the gasification 1 serves gasified material 11 and fluidizers gases 7 and 8. Bitter gas obtained in the device for gasification, is sent to the boiler 31 for heating the waste, in which heat is recovered, and the cooled gas then goes to celonova separator 32, in which the solid material 37 and 38 separated. Thereafter, the combustible gas is cleaned and cooled in a water purification tower 33 and hydrogen sulfide is removed from the fuel gas cleaning tower 34 with an alkaline solution. Thereafter, the combustible gas accumulates in the gas accumulator 35. Unreacted substance 37, turned into coal, the solid is separated in celonova separator 32 and is returned to the gasification device 1 and the remainder of the solid material 38 razgruzhaem non-combustible material is removed from the system, with the sand from this non-combustible material is returned to the device for the gasification 1 in the same manner as in the embodiment shown in Fig. 5. Waste water from cleaning towers 33 and 34 is introduced into the device 36 for cleaning waste water, in which it is cleared.

In Fig. 8 depicts a flow diagram showing an example of a process in which a combustible gas and fine particles obtained in the device for the gasification 1, are introduced into the furnace 41 for burning molten mass, where they are burned at high temperature and the residual ash is melted. In the process shown in Fig. 8, the combustible gas 29 containing a large amount of combustible components, which are obtained in the device for the gasification 1, is introduced into the furnace 41 for burning molten mass. In the furnace 41 for burning molten mass is gas 8, which is one of the three gases, for example oxygen, a gas mixture of oxygen and air, and air, so that the combustible gas and fine particles are burned at a temperature of 1300oC or higher and the residual ash is melted. In addition, harmful substances such as dioxins, PCBs and so on, are decomposed. Molten ash 44 is unloaded from the furnace 41 for burning molten combustible gas, generated from the furnace 41 for burning molten mass is rapidly cooled in the scrubber 42, preventing the recovery of dioxins. Quickly cooled in the scrubber 42 of the exhaust gas is sent to the dust collector, such as a filter 43, where the gas is removed dust 38. Then the exhaust gas is discharged into the atmosphere from the exhaust tower 55.

Fig. 9 depicts in cross section axonometric projection device for the gasification and combustion of the molten mass in accordance with the fifth embodiment of the present invention. With reference to Fig. 9 a device for the gasification 1 is basically the same as in the embodiment shown in Fig. 1. However, the output of the gas channel 108 is connected with the inlet of the gas channel 142 to fuel gas in a furnace for burning molten mass 41. Furnace for burning molten mass 41 includes a primary cylindrical combustion chamber 140 having approximately vertical axis, and the secondary cylindrical combustion chamber 150, which extends in the horizontal direction. Combustible gas 29 and the fine particles obtained in the furnace 2 from fluid cushion, served in the primary combustion chamber 140 through the inlet channel 142 to garcenia 140 is provided with a starting burner 132 and with a large number of air nozzles 134, served in the air for the combustion process, so that the air circulates around the axis of the primary combustion chamber 140. The secondary combustion chamber 150 is connected to the primary combustion chamber 140 in its lower part. The secondary combustion chamber 150 is a slag separator 160 and the discharge channel 152, which is located in the lower part of the secondary combustion chamber 150, in order to relieve the molten ash, and the exhaust channel 154, which is located above the discharge channel 152. The secondary combustion chamber 150 is further auxiliary burner 136, which is located next to the part of the secondary combustion chamber 150, in which the camera 150 is connected to the primary combustion chamber 140, and an air nozzle 134 to supply air for the combustion process. The exhaust channel 154 for removing exhaust gas 46 is provided with a radiating plate 162, to reduce heat loss through the exhaust channel 154 in the radiation.

Fig. 10 depicts a layout device for gasification in fluidized cushion and burning of the molten mass in accordance with execution of the present invention, which is used in combination with a boiler for heating the waste and with the turbine. With reference to Fig. 1 condition is ruaumoko of discharge device 23, together with melkorazdroblennym non-combustible material 28 discharged from the classifier 25. Air casing 185 is located around the conical tray 16, which is used to remove non-combustible material from the lower part of the furnace 2 from fluid cushion. The air in the air casing 185 is heated by the hot sand, coming from the furnace 2 from fluid cushion. Additional fuel F is supplied to the primary and secondary combustion chambers 140 and 150 of the furnace 41 for burning molten mass. Molten ash 44 discharged from the discharge channel 152 of the furnace 41 for burning molten mass flows into the water chamber 178, where it is rapidly cooled and then discharged as slag 176.

In the installation shown in Fig. 10, the fuel gas discharged from the furnace 41 for burning molten mass is released into the atmosphere through the boiler 31 for heating waste through the economizer 183, through the heater 186 for pre-heating of the air through the dust collector 43 and through inductively traction fan 54. The neutralizer N, for example, slaked lime (calcium hydroxide) is added to the combustible gas discharged from the heater 186 for pre-heating the air prior to its admission to call the pot 31 to a vapor state. The steam is used to rotate the steam turbine ST. The air A is supplied to the heater 186 for pre-heating the air, where it is heated and then subjected to further heating in air casing 185. Heated air is supplied through an air pipe 184 to the furnace 41 for burning molten mass. If necessary, the heated air is introduced into the free capacity of 102.

Small particles 180 and 190, accumulated in the lower part of the boiler 31 for heating waste economizer 183 and the device 186 for pre-heating air, transported to the classifier 25 Elevator 24, moving the sand to remove finely divided noncombustible material 28, which is then returned to the furnace 2 from fluid cushion. Fly ash 38 is separated in the dust collector 43 and contains alkali metal salts, for example PA, K and so on, evaporating at a high temperature, and therefore is processed chemicals in the manufacturing device 194.

In the device shown in Fig. 10 combustion in the furnace 2 from fluid cushion is carried out by the method of partial combustion at a low temperature with a small coefficient of excess air and the temperature of the fluidized podolscogo gas. Further, since the combustion occurs when a small coefficient of excess air in conditions of low atmospheric pressure, the iron and aluminum are obtained as non-oxidized precious metals. High-calorie valuable fuel gas and turned into coal substance obtained in the furnace 2 from fluid cushion, can burn at high temperatures, for example at 1300oC or higher in the furnace 41 for burning molten mass. Thus, the ash can melt and dioxins can decompose.

Fig. 11 depicts a layout device for gasification in fluidized cushion and burning of the molten mass in accordance with execution of the present invention, which is used in combination with a device for cooling gas 280. With reference to Fig. 11 a device for the gasification 1, furnace 41 for burning molten mass, the water chamber 178, the dust collector 43, inductively traction fan 54, etc. are the same elements as in Fig. 10. In the installation shown in Fig. 11, the device for cooling gas 280 and the heater 188 for independent pre-heating air provided instead of the boiler for heating the waste. Exhaust g is the primary objective for cooling gas 280 through the hot channel 278, covered with a heat insulator. A device for cooling the gas 280 combustible gas is immediately cooled due to the fine spray of water while preventing the recovery of dioxins. The flow rate of exhaust gas in the hot channel 278 is set at a low level, for example 5 m/s or below. The hot water generator 283 is located in the upper part of the device for cooling gas 280. The air heated in the heater for pre-heating air 188, served in the free capacity of 102 in the device for the gasification 1 and also in the furnace 41 for burning molten mass.

Fig. 12 depicts a layout device for gasification in fluidized cushion and burning of the molten mass in accordance with execution of the present invention, which is used in combination with a boiler for heating waste 31 and the reaction tower 310. In Fig. 12 device for gasification 1, furnace 41 for burning molten Luggage 178, boiler for heating waste 31, the steam turbine ST, economizer 183, a device for pre-heating air 186, the dust collector 43, inductively traction fan 54, etc. are the same elements as in Fig. 10. In the installation, and the m for heating waste 31 and economizer 183. In the reaction tower 310 neutralizer N, for example the suspension of slaked lime, is added to the combustible exhaust gas, thereby removing HCl from the gas. Solid fine particles 312 unloaded from the boiler for heating waste 31 and fed to the classifier 25 using the Elevator 24, the moving sand. In the high-temperature combustion chamber 320 combustible gas and additional fuel F are burned to increase the temperature of the vapor to approximately 500oC. In the device shown in Fig. 12, the steam has a high temperature and high pressure, and the excess air ratio is low, and therefore the amount of heat lost through the exhaust gas is small. As a consequence, the efficiency of electricity generation can be increased to about 30%.

Fig. 13 depicts a layout device for gasification in fluidized cushion and burning molten mass by type of cogeneration in accordance with an embodiment of the present invention. In Fig. 13 a device for the gasification 1, furnace 41 for burning molten mass, the water chamber 178, the boiler for heating waste 31, the dust collector 43, inductive traction fan 54, and so on avlana 310 is located between the boiler 31 for heating the waste and the dust collector 43. In the reaction tower 310 is added to the neutralizer N, for example the suspension of slaked lime in the exhaust combustion gas, thereby removing HCl. The exhaust gas from the reaction tower 310 is fed through the dust collector 43 in the gas turbine 420, in which it is used. In a gas turbine 420 air is compressed by a compressor C and compressed air is supplied into the combustion chamber CC. In the combustion chamber CC is combusted fuel F and the resulting combustible gas with the exhaust gas, which is compressed in the compressor 410 and supplied to the combustion chamber CC is used as the working medium to the turbine T. the Exhaust gas from the gas turbine 420 passes through superaggregates 430, the economizer 440 and a heater for pre-heating air 450 in the above-mentioned sequence, and then is vented to the atmosphere through inductively traction fan 54. Generated in the boiler 31 for heating the waste steam is heated by exhaust gas from the gas turbine 420 in superderivative 430 and the heated steam is supplied to the steam turbine ST.

Fig. 14 depicts a flow diagram showing the process of gasification under pressure combined cycle power generation method of gasification in fluidized cushion and burning molten mass is high pressure, received in the chamber 1 for supplying gas under pressure is introduced into the boiler 31' for heating the waste generated steam and the gas is cooled. The gas discharged from the boiler 31' for heating waste is divided into two streams, one of which is introduced into the furnace 41 for burning molten mass and the other is introduced into the dust collector 43' after the neutralizer N is added in order to neutralize the HCl. In the dust collector 43' fusible substance 38' contained in the fuel gas, which has hardened in the temperature decrease, separated from the combustible gas and sent to the furnace 41 for burning molten mass, in which the melt fusible substance 38'. The combustible gas which contains melting at a low temperature substances 38', is used as fuel gas in a gas turbine GT. The exhaust gas from the gas turbine GT is subjected to heat exchange in superderivative SH and economizer Eco and then processed in the device 510 for processing exhaust gas and then is released into the atmosphere. The exhaust gas from the furnace 41 for burning molten mass passes through the heat exchanger EX and dust collector, and introduced into the device 510 for processing exhaust gas. Molten ash 44 is unloaded from the chamber 41 of the dust sector 43 and is processed using chemicals in the manufacturing device 194.

Using the process depicted in Fig. 14, obtained from the waste gas is used as fuel after remove HCl and particulates. Accordingly, the gas turbine will not corrosivity under the action of gas. Further, since the HCl is removed from the gas, steam at high temperature can be generated exhaust gas turbine.

Advantages of the invention.

Accordingly, the present invention achieves the following advantages:

1. In the device for gasification in accordance with the present invention the heat is distributed circulating currents in the furnace with a fluidized pillow. As a consequence, may achieve high combustion efficiency furnace and can have reduced dimensions.

2. In the present invention a furnace with a fluidized pillow can support the combustion process with a relatively small amount of air. Consequently, it is possible to produce a homogeneous gas containing a large amount of combustible components when performing quiet combustion with a small coefficient of excess air and low temperature (450 to 650oC) in a furnace with a fluidized cushion and thereby reducing the ol substance and tar can effectively utilitatis in the furnace for combustion of the molten mass in the next step.

3. In the present invention, even non-combustible material of large dimensions can be completely discharged under the action of the circulating flow in the furnace with a fluidized pillow. In addition, the iron and aluminum contained in a non-flammable material, can be disposed of as non-oxidized valuable substances.

4. The present invention provides an implementation method or device, which can be harmless waste treatment and can be achieved by a high coefficient of utilization of energy.

Although the present invention has been described with explanations of the conditions of its execution, it should be noted that the described variants of its execution does not need to be exclusive and that various changes and modifications can be included in it, while remaining within the present invention, which is limited only by the attached claims.

1. Method of gasification of combustible material in the combustion chamber from fluid cushion for receiving combustible gas, wherein preparing the furnace with a fluidized pillow, having approximately circular shape transverse horizontal cross-section, serves fluidizable gas in the furnace with plavlennogo up stream from the Central bottom portion of the furnace inside of the furnace, and peripheral flow fluidizing gas, which serves as the upward flow from the peripheral bottom portion of the furnace inside the furnace, indicated the Central flow fluidizing gas has a lower velocity of the mass than the specified peripheral flow fluidizing gas, thus forming a movable cushion, forming a zone of gasification (G), in which the fluidized medium is deposited and dispersed on the Central part of the furnace, thus forming a fluid cushion as the oxidized zone (S) in which actively fluidized fluidized medium on the peripheral area of the furnace, so that a combustible material, which is fed into the furnace, gasified, to form a combustible gas, rotating together with the fluidized medium from the lower part of the movable cushion to the fluid cushion and the upper part of the fluidized pillows to the movable cushion.

2. The method according to p. 1, characterized in that the specified fluidizable gas further includes an intermediate flow fluidizing gas, which is served inside the chamber from the intermediate area of the lower side of the chamber between the Central and peripheral sections of the lower part of the furnace that the intermediate stream fluidisation fluidizing gas and the peripheral velocity of the mass flow fluidizing gas.

3. The method according to p. 2, characterized in that the intermediate flow fluidizing gas has an oxygen content which is an intermediate value between the oxygen content in the specified Central flow fluidizing gas and oxygen content in the specified peripheral flow fluidizing gas.

4. The method according to p. 2 or 3, characterized in that the intermediate flow fluidizing gas is a gas mixture of steam and air or air.

5. The method according to one of paragraphs.1-4, characterized in that the Central flow fluidizing gas selected from the group of gases consisting of steam, a gas mixture of steam and gas, and air.

6. The method according to one of paragraphs.1-5, characterized in that the peripheral flow fluidizing gas selected from the group of gases consisting of oxygen, the gas mixture of oxygen and air, and air.

7. The method according to one of paragraphs.1-6, characterized in that fluidizable gas, which is fed into the furnace with a fluidized pillow, contains a quantity of air, which is the value of not more than 30% of theoretical quantity required for combustion of combustible material.

8. The method according to one of paragraphs.1-7, characterized in that it removed trichosis fact, that the combustible gas and fine particles obtained in said furnace with a fluidized pillow, burn at a high temperature of 1300oC or higher in the furnace for combustion of the molten mass and melt in her ashes.

10. The method according to one of paragraphs.1-9, characterized in that extract heat from the exhaust gas emerging from the specified furnace for burning molten mass using a boiler to heat waste.

11. The method according to one of paragraphs.1-10, characterized in that the set pressure in said furnace with a fluidized pillow on the level not lower than the atmospheric pressure and use the exhaust gas from the specified furnace for combustion of the molten mass to rotation of the gas turbine.

12. The method according to one of paragraphs.1-11, characterized in that the combustible material is a waste.

13. The method according to one of paragraphs.1-12, characterized in that is installed in the fluid cushion temperature in the range of from 450 to 650oC.

14. A device for the gasification of combustible material in the furnace with a fluidized pillow for receiving a combustible gas, comprising the specified furnace with a fluidized cushion, characterized in that it has a side wall having the shape priblizitelino, which is located at the lower section of the furnace that has an exhaust channel for non-combustible material, which is located on the outer peripheral part of the device for dispersing fluidising gas that has a Central feed device for feeding fluidizing gas inside the furnace from the Central plot device for dispersing fluidising gas, so fluidizable gas is directed vertically upwards that has a peripheral input device for supplying fluidizing gas inside the furnace from the peripheral area of the device for dispersing fluidising gas, so fluidizable gas is directed vertically upwards, with the specified fluidizable gas supplied to the Central feed device has a lower velocity of the mass, than the gas supplied peripheral feed device, and the oxygen concentration is lower than the gas supplied peripheral feed device.

15. The device according to p. 14, characterized in that the furnace with a fluidized pillow has a further intermediate input feeder fluidizing gas inside the chamber from the intermediate annular zone located between the Central and pereida vertically upwards, that specified intermediate feeder serves fluidizable gas with the velocity of the mass, which is an intermediate value between the velocities of the masses fluidizing gases supplied to the Central and peripheral feeding devices, and oxygen concentration, which is an intermediate value between the concentrations of oxygen fluidizing gases supplied to the Central and peripheral feeding devices.

16. The device under item 14 or 15, characterized in that the peripheral input device is a feed box has a circular shape.

17. Device according to one of paragraphs.14-16, characterized in that the furnace with a fluidized pillow includes an inlet for combustible material, which is located in the upper side of the chamber from fluid cushion that the specified input channel to combustible material is set to drop combustible material in the area above the Central feed device that the specified device for dispersing fluidising gas has a peripheral portion which is located lower than the Central area.

18. Device according to one of paragraphs.14-17, characterized in that Esna the peripheral part of the device for dispersing fluidising gas, and that has a tapered section that extends downward from the annular section in such a way as to make the seal as soon as the distance to the annular area increases in a downward direction.

19. Device according to one of paragraphs.14 to 18, characterized in that the specified output channel for non-combustible material has a discharge device for controlling the volume, the first rotary sealing valve, a rotary shut-off valve, the second rotary sealing valve located in series.

20. Device according to one of paragraphs.14-19, characterized in that it has a furnace for combustion of the molten mass, in which the combustible gas and fine particles produced in the furnace with a fluidized pillow, burnt at high temperature and the ash melts that this furnace for burning molten mass has a primary cylindrical combustion chamber with about a vertical axis and the input channel for the supply of combustible gas and fine particles obtained in the furnace with a fluidized pillow, in the specified primary cylindrical combustion chamber, so that the combustible gas and fine particles rotate around the axis specified primary combustion chamber that has vtoroy channel, which is provided in the lower part of the secondary combustion chamber so that the molten slag can be discharged through the discharge channel.

21. The device according to p. 20, characterized in that the exhaust gas from the secondary combustion chamber specified furnace for combustion of the molten mass is introduced into the boiler for heating the waste in the heater for pre-heating air, extracting the heat from waste.

22. Device according to one of paragraphs.19-21, characterized in that the exhaust gas is introduced into the dust collector, which removes the dust and then the gas is released into the atmosphere, and the fact that the dust from the specified remote dust collector, processed chemicals.

Priority points:

10.03.94 - PP.1, 5, 6, 8, 9, 12, 14, 16, 18, 19;

15.04.94 - PP.2, 3, 4, 5, 15; 17;

09.02.95 - p. 7, 10, 11, 13, 20, 21, 22.

 

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