Method and device for circulating solids in the reactor with a fluidized bed

 

(57) Abstract:

The invention relates to a method and apparatus for circulating solids in the reactor with a fluidized bed. Luggage reactor (12) with liquid cushion has an internal circulation of particles. Large recirculating particles are not allowed to surfaces for heat transfer (40) by classifying the particles close to the bottom (24) of the reactor chamber (12), using the camera for the particles (22) having a hollow wall (30) with holes or grooves having a maximum size less than 30 mm Surface for heat transfer (40) can be located in the chamber for the particles (22). Large particles fall along the walls of the chamber for the particles in the chamber of the reactor, and part of the small particles in the chamber for the particles preferably recycled back into the liquid cushion. Hollow wall is preferably the top wall of the chamber for particles and may have a refractory coating with grooves and/or may be made of plumbing pipes that are connected by edges, with holes or grooves formed in the edges. The invention increases the ability to extract heat. 2 C. and 23 C.p. f-crystals, 7 Il.

The invention relates to a method and apparatus for circulating solid the device for circulating solids in the reactor with a fluidized bed of essential features and the achieved result is a U.S. patent N 4823740 (25.04.89, CL B 09 B 3/00). The known method of circulation of solids in the reactor with a fluidized bed of solid particles includes internal circulation of solid particles in the fluidized bed with the implementation of classification of solid particles through the chamber for particles having a hollow wall with holes. The above method is implemented as follows, namely, at the stage of (a) introducing solid particles from the fluidized bed through the inlet into the chamber for particles, then at the stage b) carry out the recovery of heat from the particles in the chamber for the particles from the surfaces of heat transfer and then on stage by recycling at least part of the solids from step (a) from the camera to the particles through at least one outlet port in the chamber of the reactor.

In addition, from the above-mentioned U.S. patent '740 a device for circulating solids in the reactor with a fluidized bed, which includes camera reactor having a side wall bounding the cavity of the reactor chamber, and the grille at the bottom of the reactor chamber; an opening for release of the gas adjacent to the upper end of the reactor chamber, fluidized bed of solid particles in the specified reactor chamber, with ve of the reactor, having a hollow wall, an inlet opening and at least one outlet. Hollow wall separates the chamber for particles from the fluidized bed in the reactor chamber. The device also includes surface heat transfer provided inside the chamber for the particles.

Vertical hollow wall according to the U.S. patent separating chamber of the heat transfer from the reactor chamber, has no holes and does not include any means of solid particles of a given size to pass through it. Material vertical hollow wall can be cooled by including cooling pipes in the construction of hollow walls. These pipes also contribute to the construction of hollow walls. Leaving the upper part of the vertical hollow wall, the cooling pipe bend, pass over the camera of heat transfer. These pipes are connected to the manifold in the wall of the reactor chamber. Between the pipes, bent over the camera of heat transfer, formed large empty gaps that allow all particles to pass through them.

However, pipes, bent over the camera of heat transfer, do not form the top of the hollow wall, allowing only particles of a certain sadanaga create the possibility of resistance to the flow of solid particles, passing through the gaps between the pipes into the chamber of the heat transfer, which increases power consumption of the device.

The design of the device, according to the U.S. patent, proposes that the hollow wall was curved towards the center of the reactor chamber to direct pseudoviruses gas and to introduce more particles in pseudoviruses gas and thus increase the number of particles introduced into the chamber of the heat transfer. However, in the known apparatus has no means of classifying particles, preventing the flow of larger particles into the chamber of the heat transfer, so a sufficient amount of solid particles does not communicate with the camera of heat transfer due to the large grain size. The problem here is that the force of gravity prevents the achievement of chamber heat transfer to all particles.

In the fluidized bed reactor, as usual, with "fluidized bed and circulating layer is the internal circulation of the solids forming this layer, inside the reactor chamber. The substance forming this layer, is in constant motion up and down. The smaller the size of solid particles, the easier they move up in the chamber of the reactor. Thus, there is a fractionation of solid Castagna part of the reactor chamber, while the less dense fraction of solid particles containing small solid particles, is formed above.

Sometimes it may be desirable to have the ability to handle particles in the lower part of the reactor chamber without mixing them with larger objects. For example, the return of heat from solid particles in the lower part of the reactor chamber can be facilitated, if large objects will not be admitted to the surfaces to transfer heat. Large objects overlap surface for heat transfer and may cause mechanical damage.

The basis of the invention is to provide a method and device for classifying solid particles in the reactor pseudoviruses layer having an internal solids circulation while removing heat from solid particles in the lower part of the reactor chamber by minimizing the occlusion surfaces for heat transfer.

The problem is solved in that in the method of circulation of solids in the reactor with a fluidized bed comprising a camera reactor having a side wall bounding the cavity of the reactor chamber, and the grille at the bottom of the reactor chamber, fluidized bed of solid particles in ka the s particles in the reactor chamber, having a hollow wall of the separating chamber for particles from the fluidized bed in the reactor chamber, inlet and at least one outlet, the surface of the heat transfer provided inside the chamber for the particles, which consists in the fact that:

(a) introducing solid particles from the fluidized bed through the inlet into the chamber for particles

b) carry out the recovery of heat from the particles in the chamber for the particles from the surfaces of heat transfer and

C) implement recycling at least part of the solids from step (a) from the camera to the particles through at least one outlet port in the chamber of the reactor according to the invention, in stage (a) ensure the flow of only the solid particles with a size smaller than the specified size from the reactor chamber into the chamber of the particles due to the execution of the input holes, which prevent flow through them solid particles larger than a specified size, and location of these openings in the hollow wall, and the fact that additional stage d) make large objects i.e., solid particles larger than the specified size, down in the chamber of the reactor chamber for the particles.

is Salo contact of these particles with surfaces for heat transfer, and heat from particles removed in the chamber for particles with surfaces for heat transfer. Preferably the classification of solid particles in the internal circulation to be implemented through an upper wall of the chamber for the particles as a hollow wall. It is advisable to towards the large particles with dimensions greater than set down in the chamber of the reactor to carry out by classifying solid particles having horizontal inertia in the fluidized bed by placing cameras for particles in a liquid cushion and passes into the chamber for the particles through the holes in the main its vertical wall only particles having dimensions less defined when the direction of large particles with dimensions greater than set down in the chamber of the reactor is carried out by passing into the chamber for particles only essentially all of the solid particles, having a diameter, smaller 30 mm In an alternative embodiment, the direction of large particles with dimensions greater than set down in the chamber of the reactor is carried out by passing into the chamber for particles only essentially oblong solid particles having a width of less than 30 mm, it is Recommended that the recycling of solid particles from the chamber for the particles into the chamber of the reactor somestringvalue solid particles from the chamber for the particles in the chamber of the reactor passes through a gas tube, located in the wall of the chamber for the particles, and by regulating the gas tube flow pseudoviruses gas.

Alternatively, the classification of solid particles in the internal circulation is carried out by gathering particles from the cross-sectional area of the reactor chamber, is greater than the total cross-sectional area of holes in the hollow wall.

According to the invention, the particles enter the chamber for particles in one end and the opposite end into the chamber of the reactor particle recycle in order to ensure sufficient duration of their stay in the chamber for the particles for good mixing before recirculation into the chamber of the reactor. You want the camera also had an external circulation of particles and included a stage subsequent to the receipt of the particles after the external circulation in the chamber of the reactor through the chamber for particles.

The problem is solved in a device for circulating solids in the reactor with a fluidized bed, comprising at least the camera reactor having a side wall bounding the cavity of the reactor chamber, and the grille at the bottom of the reactor chamber, the hole for the gas outlet adjacent to the upper end of the s particles, and the camera for particles in the specified fluidized bed of solid particles in the reactor chamber having a hollow wall that defines the chamber for the particles from the fluidized bed in the reactor chamber, an inlet opening and at least one outlet, the surface of the heat transfer provided inside the chamber for the particles according to the invention, the hollow wall has openings, holes or grooves having a diameter or width smaller than the specified size, preventing flow through them solid particles larger than a specified size from the reactor chamber into the chamber for the particles. With this design, the device heat easily and efficiently extracted from the particles without the adverse effects of large objects.

Luggage for the particles may be located in a position adjacent to the side wall or the inner wall of the reactor in the lower part for classifying solid particles flowing under the action of gravity down along the walls of the reactor. In this case, the top or "roof" part of the camera for the particles may be a hollow wall. Hollow wall may be horizontal or inclined.

Hollow wall having apertures, propagare the inclination of the upper end wall on 30/45ofrom horizontal large objects continue to move down along the outer side of the hollow wall without overlapping in her holes.

The side wall of the chamber for the particles may, in some embodiments of the invention to form a hollow wall. In this case, particles having horizontal inertia, can penetrate through the holes in the hollow wall into the chamber for the particles.

The invention can be used in combustion chambers with liquid cushion, where one or more cameras for particles mounted on two combustion chambers. The camera or cameras particles can adhere to the side walls or internal walls of the combustion chamber or may be located on its bottom separately. In some embodiments, the execution device corresponding to the invention, the chamber for the particles can have protrusions, upward.

If camera for particles located in a position adjacent to one or more lateral walls of the reactor chamber, part vertical or inclined side walls may form a common wall between the chamber for the particles and the reactor chamber. Luggage for the particles can be located with the inner or outer side of the side with the inner side of the reactor chamber. If your camera for particles forms a partition on the external side of the side wall of the reactor chamber, holes, allowing the particles to penetrate into the chamber for particles mainly formed in the side wall, forming a common wall between chamber for thin substance and the reactor chamber.

In a hot environment chamber part can be fitted with panels of water pipes as well as the camera itself reactor. Panel pipes can have a fireproof protection. Openings in the upper wall forming a hollow wall, in this case can be formed in the edges connecting adjacent water tubes, or pipe, or two adjacent tubes can be bent to form a groove between them. If the hollow wall has a fire-resistant protection in a refractory coating can be formed in the recess, and the holes can be performed on the two notches. Can only be done one hole or groove in the hollow wall, if it is enough to pass the required volume of particles. Usually for passage of a sufficient amount of particles in the upper endwall made a few holes or grooves.

Slots or rows of holes in a horizontal or inclined upper walls of the chamber for otelih the walls of the slots or rows of holes mainly oriented vertically, but in some embodiments of the invention can be oriented horizontally.

Luggage for the particles may, for example, to reach the level of 3-8 meters above lattice circulation reactor with a fluidized bed, making a fairly large drop-down flow of particles can be captured by the camera for particles.

Can be used long camera for particles, covering essentially the entire length of the sidewall or more side walls, or may be used one or two small cameras for particles located separately and independently of each side wall.

The holes in the hollow wall of a circulating fluidized bed reactor may be holes having a diameter less than 50 mm, preferably about 30 mm or less, or grooves having a width of less than 50 mm, preferably about 30 mm or less. These holes let in only approximately round particles smaller than 50 mm, preferably less than 30 mm or oblong particles, having a width of less than 50 mm, or preferably less than 30 mm, via hollow wall.

In the combustion chamber fluidized bed chamber for particles can be used to extract heat sabreena enables operation of the combustion chambers when load is low even when it is impossible to obtain a sufficient level of heating of the upper regions of the combustion chamber or in an external heat exchangers. The invention makes possible the achievement of a balance between preparirovaniem and evaporation for different loads and different fuels.

Surface to transfer the heat in the chamber for the particles may be of any known device. The heat transfer can be controlled inlet pseudoviruses air/gas into the chamber with fine-grained substance. Pseudoviruses air can be used as secondary air in the combustion chamber.

It is important to achieve good mixing of solids in the chamber for the particles, if heat is extracted from the particles in that cell. Mixing can be optimized, if necessary, by equipping the camera for particle inlet hole or holes and the outlet opening or openings located at opposite ends of it.

In accordance with a preferred embodiment of the invention, the particle recycle from the chamber for the particles back into the chamber of the reactor. Particles can be recycled through the drain hole in the chamber for the particles. These openings can be either only in one side wall of the chamber for CNII from the input holes, located in the hollow wall, if you want to achieve good mixing of the particles in the chamber for the particles.

In another case, particles can be recycled through the gas tube, such as a narrow hole type slots one above the other, in the side wall of the chamber for the particles. Particles can also be recycled through the gas tube, type L-shaped valve located between the chamber for the particles and the reactor chamber. Recirculation can be controlled by intake pseudoviruses air into fine particles near the gas tube. Of course, the particles can also be recycled into the chamber of the reactor by mechanical means such as a screw feeder.

Pseudoviruses the air fed into the combustion chamber to control the transfer of heat or to feed particles into the chamber for the particles, in addition, can be used as secondary air in the combustion chamber. Outlet openings for particles or the inlet for particles allow gas to come out through the hollow wall against the direction of flow of the particles. The stream of particles is directed into the chamber for the particles is not stable and prevents the escape of gases from the chamber.

In the circulation reactor with n the particle separator. The particles are then fed through an inlet for particles in the chamber of the reactor, usually in the lower part of it. When using the camera for particles in accordance with the present invention in the circulation reactor with pseudoviruses layer is externally circulating substance forming this layer may be fully or partially re-submitted into the reactor through the chamber for particles. An inlet for substances with external circulation, thus, is formed in the chamber for the particles.

Because surface for heat transfer are placed in the chamber for the particles, heat is extracted from substances with external circulation and internal circulation.

Further characteristics and advantages of the present invention will be described in more detail with reference to the following description of the drawings and in the accompanying claims.

Fig. 1. Schematically shows a vertical section of the circulation reactor with a fluidized bed in accordance with the first preferred embodiment of the present invention, Fig. 2 and 3 schematically shows an enlarged sections of the bottom piece of the reactor chamber with a fluidized bed in accordance with the other options in the implementation of fluidized bed in accordance with another embodiment of the present invention, Fig. 5 and 6 schematically shows in an enlarged scale hollow walls in the cells for particles in accordance with other variants of implementation of the present invention, Fig. 7 is a schematic perspective view with partial section of a hollow wall, corresponding to Fig. 6, in Fig. 1 shows a circulating reactor 10 fluidized bed, with the camera reactor 12, normal air chamber 14 with a grid of 15 for filing pseudoviruses air into the chamber of the reactor 12, a known particle separator 16, a famous outlet 18 for gas and known return channel 20 for the recycling of solid particles into the chamber of the reactor 12.

Luggage for particles 22 in accordance with the present invention is located in the lower part 24 of the reactor chamber 12. In accordance with this embodiment of the invention, the chamber for particles 22 is connected to inlet 26 for particles recirculated through the return channel 20. In this way a relatively fine-grained substance coming from the reactor 10, entrained gaseous products of combustion, is introduced into the chamber for particles 22. There may be several openings for re-circulating particles, and Luggage for particles 22 may be connected to each of the WMO is the role of the side wall 28 of the camera 12, trapped in a hollow wall 30, forming the roof of the chamber for the particles 22. The holes 32 in the hollow wall 30 miss small solid particles (see arrow 34) through the hollow wall 30. Large objects (see arrow 36) down along the outer surface 37 of the camera for particles 22. Particles entering into the inlet 26 and the holes 32, again fall into the lower part of the reactor chamber through the openings 38.

Holes 38 for new entrants into the chamber of the reactor, the particles can comprise, if necessary, the gas tube. Openings 38 may, for example, be a narrow slots located one above the other, each groove forms an L-shaped valve.

Surface to transfer the heat to 400 are located in the chamber for the particles 22. Surfaces for heat transfer can, for example, be the surface of the evaporator or superheater. By extracting heat from the particles circulating inside the reactor chamber 12, it becomes possible to obtain a significant amount of heat even at low loads.

In Fig. 2 shows the enlarged view of the lower part 124 of the other options for performing the reactor chamber in accordance with the invention. In this embodiment, components that are comparable while the fact of carrying out the invention the camera for particles 122 is in position, adjacent to the side wall 129, the opposite side wall 128 having an inlet opening 126 for recirculating fine solid particles. Luggage for particles 122 is located in the lower part 124 of the reactor chamber having a sloping refractory wall 41. Part 42 of the refractory wall 41 adjacent to the side wall 129, also forms the side wall of the chamber for thin substance 122. Hollow wall 130 and the side wall 137 of the camera 122 preferably also has a refractory coating. Hollow wall 130 and the side wall 137 form a seal between the bottom space 124 of the reactor chamber and the chamber for the particles 122.

In the circulation reactor with a fluidized bed of dense stream of particles moving downwards along the side walls 41, and a substantial portion of the particles can pass through the chamber for particles 122. Surface for heat transfer 140, for example, the surface of the evaporator mainly located in the chamber for the particles 122. The heat transfer can be controlled by the flow control pseudoviruses air from the air chamber 46. The return of the particles into the chamber of the reactor 112 through apertures 138 can also be controlled by flow control pseudoviruses of the air kV this embodiment, components comparable to the one shown in Fig. 2, are denoted by the same two-digit numerals, but with the addition of the numeral "2". In this embodiment of the invention, the chamber for particles 222 are designed as part of an inclined refractory wall 242 of the lower part of the reactor chamber 224. The inlet 232 having a predetermined diameter or width, are in the upper part of the refractory side wall 242, and this upper part through this forms a hollow wall 230. Output apertures 238 are located in the lower part of the refractory side wall 241 to return the particles into the chamber of the reactor. The solid particles fall to the camera for particles 222 through holes 232 and again fall into the chamber of the reactor through holes 238. Some particles can be released from the chamber 222 via the outlet 48.

In Fig. 4 shows a perspective view of another version of the implementation of the present invention. In this embodiment, components that are comparable with those shown in Fig. 3, are denoted by the same two-digit numerals, but with the addition of the numeral "3". In this embodiment of the present invention, the inlet 332 and outlet openings 338 are in opposite parts of the camera for particles 322 DL is for particles 322 into the chamber of the reactor 312. The level of particles in the chamber for the particles 322 depends on the location of the outlet openings 338 in the wall 337.

In Fig. 5 and 6 shows in enlarged scale the kinds of hollow wall 330 of the reactor corresponding to Fig. 4. The holes 50 in the hollow wall of Fig. 5 and the grooves 52 in Fig. 6 is executed in the grooves 54 of the refractory coating 56, covering the side walls 337 and roof 330 camera for particles 332.

The walls of the chamber for particles 332 can be made of panels of pipes, such as water or evaporative tubes, interconnected by edges. The notches 54 in the embodiment shown in Fig. 5 and 6 are made so that the edges between the pipe is left free. Holes 50 and grooves 52 are located in the ribs.

In the embodiment of the invention shown in Fig. 6, hollow wall 330 is inclined, forming crests surface 57 between the slots without noticeable horizontal planes. Thus, all particles moving down to the hollow wall 330, are directed into the grooves 52 on the bottom of the grooves 54. Particles collected sectional area significantly greater than the area of the grooves 52. Particles are collected with a square cross-section, at least two times greater than the total area of the grooves. Combs 57 allow you to collect and Classifi other variants of implementation of the present invention part of the upper wall (30, 130 and so on) camera for particles (22, 122 and so on) can also form the guide walls that guide the particles to the holes or grooves.

In Fig. 7 shows a view in partial section of a comb-like elements 57 of the hollow wall 330, shown in Fig. 6. Comb-shaped elements 57 are made in the form of U-shaped sections of tubular plates 60,62, refractory coating 63. Tubular plate made of a pipe 64 connected by ribs 66. Section of the tubular plates are parallel to each other, while between every two adjacent sections 60, 62 left groove 52.

Thus, in accordance with the invention created device and method that provides increased opportunities for heat recovery by avoiding contact of large particles and surfaces for heat transfer.

Although the invention is described in connection with the embodiment of the invention, which can now be considered as the most approximate to the practice and preferred, it is understood that the invention is not limited to the described variants, on the contrary, it covers various modifications and similar devices, appropriate to the nature and scope of the attached claims.

1. The way blood circulation to Enki, bounding the cavity of the reactor chamber, and the grille at the bottom of the reactor chamber, fluidized bed of solid particles in a reactor chamber having an internal circulation of solid particles, and the camera for particles in the fluidized bed of solid particles in the reactor chamber having a hollow wall of the separating chamber for particles from the fluidized bed in the reactor chamber, inlet and at least one outlet, the surface of the heat transfer provided inside the chamber for the particles, namely, that (a) introducing solid particles from the fluidized bed through the inlet into the chamber for the particles, b) carry out the recovery of heat from the particles in the chamber for the particles from the surfaces of heat transfer, by recycling at least part of the solids from step (a) from the camera to the particles through at least one outlet port in the chamber of the reactor, characterized in that in stage (a) ensure the flow of only the solid particles with a size smaller than the specified size from the reactor chamber into the chamber of the particles due to the execution of the input holes, which prevent flow through them solid particles larger than a specified size, and due to the location of the target, i.e., solid particles larger than the specified size, down in the chamber of the reactor chamber for the particles.

2. The method according to p. 1, characterized in that the direction of the large particles larger than set down in the chamber of the reactor prevents contact of these particles with surfaces for heat transfer and heat from particles extracted in the chamber for particles with surfaces for heat transfer.

3. The method according to p. 1, characterized in that the classification of solid particles in the internal circulation is carried out by use of the upper wall of the chamber for the particles as a hollow wall.

4. The method according to p. 2, characterized in that the direction of large particles with dimensions greater than set down in the chamber of the reactor is carried out by classifying solid particles having horizontal inertia in the fluidized bed by placing cameras for particles in a liquid cushion and passes into the chamber for the particles through the holes in the main its vertical wall only particles having a size less than specified.

5. The method according to p. 2, characterized in that the direction of large particles with dimensions greater than set down in the chamber of the reactor is carried out by passing into the chamber for particles of different topics the direction of large particles with dimensions greater than set down in the chamber of the reactor is carried out by passing into the chamber for particles only essentially oblong solid particles having a width of less than 30 mm

7. The method according to p. 2, characterized in that the recirculation of the solid particles from the chamber for the particles in the chamber of the reactor is carried out by transfusion through holes located in the wall of the chamber for the particles.

8. The method according to p. 2, characterized in that the recirculation of the solid particles from the chamber for the particles in the chamber of the reactor passes through a gas tube located in the wall of the chamber for the particles, and by regulating the gas tube flow pseudoviruses gas.

9. The method according to p. 2, characterized in that the classification of solid particles in the internal circulation is carried out by gathering particles from the cross-sectional area of the reactor chamber, is greater than the total cross-sectional area of holes in the hollow wall.

10. The method according to p. 2, characterized in that the particles enter the chamber for particles in one end and the opposite end into the chamber of the reactor particle recycle in order to ensure sufficient duration of their stay in the chamber for cha is the, the camera also has an external circulation of particles and includes a stage subsequent to the receipt of the particles after the external circulation in the chamber of the reactor through the chamber for particles.

12. The method according to p. 1, characterized in that the classification of solid particles in the internal circulation is carried out by gathering particles from the cross-sectional area greater than the total cross-sectional area of holes in the hollow wall.

13. Device for circulating solids in the reactor with a fluidized bed, comprising at least the camera reactor having a side wall bounding the cavity of the reactor chamber, and the grille at the bottom of the reactor chamber, the hole for the gas outlet adjacent to the upper end of the reactor chamber, fluidized bed of solid particles in a reactor chamber having an internal circulation of solid particles, and the camera for particles in the specified fluidized bed of solid particles in the reactor chamber having a hollow wall of the separating chamber for particles from the fluidized bed in the reactor chamber, an inlet opening and at least one outlet, the surface of the heat transfer provided inside the chamber for the particles, characterized in that the hollow wall inie through which solid particles larger than a specified size from the reactor chamber into the chamber for the particles.

14. The device according to p. 13, characterized in that chamber for particles located at the bottom of the reactor chamber, and the side wall in the chamber of the reactor forms a side wall of the chamber for the particles.

15. The device according to p. 13, characterized in that chamber for particles located at the bottom of the reactor chamber, and part of the inner wall in the chamber of the reactor forms a side wall of the chamber for the particles.

16. The device according to p. 13, characterized in that the hollow wall is located in the upper part of the chamber for the particles.

17. The device according to p. 13, characterized in that the hollow wall is located in the upper part of the chamber for particles and essentially horizontal.

18. The device according to p. 13, characterized in that the hollow wall is located in the upper part of the chamber for particles and inclined to facilitate the flow of large objects down along the hollow wall.

19. The device according to p. 13, characterized in that the holes or slots in the hollow wall have a diameter or width less than 500 mm

20. The device according to p. 19, characterized in that the holes or slots in the hollow wall have a diameter or width less than 30 mm

21. The device according to p. 13, characterized in that the holes formed in Wielka wall made of water pipes, connected by edges, and holes in the hollow wall formed in the ribs.

23. The device according to p. 13, characterized in that the hollow wall made of water pipes that are connected by edges, and holes in the hollow wall obtained by bending two adjacent water pipes in the sides for the formation of a groove.

24. The device according to p. 13, characterized in that it further comprises a means for external circulation layer substances comprising an inlet for re-entering the solid substance layer, circulating outside the chamber for particles.

25. The device according to p. 13, characterized in that holes are made in the cavity of the refractory coating of hollow walls.

 

Same patents:

The invention relates to the combustion of sulfur-containing fuels, such as, for example, some types of coal, or petroleum residues, particularly in boilers with circulating fluidized bed (fluidized) layer, under pressure or at atmospheric pressure

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

The invention relates to a base or hearth of the furnace, which uses boiling or fluidized bed

The invention relates to a device for generating steam by burning fuel in the gas generator with a rotating fluidized bed

The invention relates to a method and apparatus for processing a layer of material in the reactor with a fluidized bed having a reaction chamber with side walls bounding the internal space of the reaction chamber, and a fluidized bed of solid particles in the lower part of the reaction chamber

The invention relates to a device for separating solid particles carried by a stream of gaseous products of combustion flowing through the circulating fluidized bed pillow /ZPP/ /"boiling layer"/ boiler

Hrsg // 2139471
The invention relates to use of waste heat from chemical reactions, in particular to the boiler-utilizer

Fire evaporator // 2106580
The invention relates to heat engineering and is designed primarily to separate two liquids with different boiling points and / or desorption of gases dissolved in these liquids

The invention relates to a boiler building and can be used, for example, waste heat boilers chillers Converter gases

The boiler unit // 2051312
The invention relates to energy and can be used in thermal power plants, containing boiler units with regenerative rotating air heaters and exhaust gas recirculation

Boiler // 2037092
The invention relates to energy and can be used for cooling dust-Laden gases
Up!