Device for wet treatment of gas emissions
(57) Abstract:Usage: the invention relates to a device for wet treatment of gas emissions and can be used to extract dust and harmful gas and solids from gas emissions from factories, power plants, boilers Central heating, etc., the inventive device for wet treatment of gas emissions in the form of a tall chimney contains nozzles, located in the upper part of the tube with water spraying straight down, underneath the injectors electric heater with adjustable temperature and a reservoir for collecting the resulting liquid in the lower part of the tube. Over the electric heater can be installed fan for supplying variable speed air flow in the direction perpendicular to the chimney. The device provides effective cleaning gas emissions. 1 C.p. f-crystals, 2 Il. The invention relates to a device for wet treatment of gas emissions produced through tall chimneys. It can be used to extract dust and harmful gases /sulfur dioxide, nitrogen oxides, hydrogen sulfide, chlorine, ammonia, etc. from gas emissions p Known inertial collector-cyclone  in which dust particles recovered by centrifugal forces resulting from the rotational movement of the purified gas. The disadvantage of these devices is their inefficiency.Also known electrostatic precipitators  in which the dust particles from the gas emission is removed by means of an electrostatic field. The disadvantage of these devices in their significant complexity and low efficiency.The closest in technical essence and the achieved result is a device for wet treatment of gas emissions  in the form of a flue containing placed inside the pipe system of nozzles for spraying water, mounted on the top of the tube coaxially, and a reservoir for collecting the resulting liquid.However, the known device does not provide a high degree of purification of gas emissions.The formulated problem is solved due to the fact that the device for wet treatment of gas emissions in the form of a flue containing nozzles for spraying water inside the pipe and a reservoir for collecting the resulting liquid in the bottom of the pipe, the pipe is made of high-rise nozzle located in the upper part of the tube with the opportunity Restoral heating. The device can also be equipped with a fan for supplying variable speed air flow in the direction perpendicular to the chimney, installed over an electric heater.The essence of the invention lies in the fact that the drops of water through the injectors spray directly into the space tall chimney, the height of which may be several tens or even hundreds of meters. Drops of water, like rain drops, falling from a great height from the top of the pipe against the flow of smoke in its path capture dust particles of all sizes and simultaneously dissolve in itself harmful gaseous impurities /sulfur dioxide, nitrogen oxides, hydrogen sulfide, chlorine, ammonia and so on/ and prevents them from entering the environment. Fallen drops down with dust and dissolved gaseous impurities are collected in a special tank, located at the bottom of the flue pipe. Then the liquid through a special pipe with valve output and used as raw materials for the chemical industry. The simplicity of the device is ensured by the fact that it can be created by a relatively small alteration of normal and, as a rule, the existing chimney.In Fig. 1 shows a device for Mac, located in the upper part of the pipe.In Fig. 2 shows a similar device in which to adjust the draught in the chimney using a fan driven by an electric motor. The fan creates on the upper part of the chimney air flow perpendicular to the pipe, resulting in a chimney works as adjustable gas-jet pump.The device shown in Fig. 1 and 2, consists of the chimney 1, attached to the duct 2. Inside of the chimney in its upper part are water nozzle 3 connected to the pipe 4 for supplying a spray of water. In the lower part of the chimney 1 the tank 5 to collect falling water drops. To output the collected liquid from the reservoir 5 to the outside is the pipe 6 with the valve 7. To adjust the thrust in the pipe 1 in the device of Fig. 1 used electric heaters 8. To adjust the traction device of Fig. 2 used the fan 9, which sucks ambient air through the pipe 10, and then through the pipe 11 drives it perpendicular to the upper part of the tube 1.The operation of the device of Fig. 1 and 2 is as follows.In the pipe 1 through the duct 2 is directed gas emissions, as do obisnyat vertically down and on its way down capture dust particles and simultaneously dissolve in itself harmful gaseous impurities. Due to the large height of the pipe /tens and even hundreds of meters/ cleaning from dust and harmful gas impurities should be a very effective.A drop of water containing the dust and dissolved gaseous impurities collect in the tank 5. Periodically collected fluid through the pipe 6 and the valve 7 release out and used as raw materials for the chemical industry.If natural draft in the chimney is insufficient, for its strengthening in the device of Fig. 1 use the heaters 8, heated by electric resistance or hot steam. The heated air and smoke at the end of the pipe will move upward, and thrust in the pipe increases. Thrust in the pipe regulate the temperature of the heaters 8.To gain traction on the device shown in Fig. 2 include the fan 9 and the pipe 10 are sucked from the environment the air and drives it through the pipe 11, which is located perpendicular to the flue 1. The air flow in the tube 11 increases thrust in the pipe 1, which in this case works as a jet pump. Thrust in the pipe to regulate the flow rate of air in the pipe 11, which may be done, for example, by changing the rotation speed of the fan 9. As to coderoute under the influence of drops of water and the substances contained therein, the inner surface of the pipe cover anti-corrosion layer.The main advantage of the proposed device is its simplicity and high efficiency. In fact, to create a device necessary to alter the existing chimney, which will require a minor investment. For this reason, the proposed device can be installed for a short time in any enterprise. This will cause the smoke and harmful invisible gas impurities from numerous enterprises will completely cease to enter the environment. Dramatically improve the quality of the air that breathes the population of the surrounding areas that will improve the health of people, improving their health and reducing health costs.Cleaning of smoke in the proposed device will also lead to the disappearance of acid rain, which destroys the flora and fauna over large areas and, in addition, quickly destroy ancient monuments: architectural structures and sculptures.Collected in the lower part of the device, the liquid containing dust particles and dissolved chemicals can be used as raw material for Himicheskaya nozzles for spraying water inside the pipe and a reservoir for collecting the resulting liquid in the lower part of the tube, characterized in that the pipe is made of high-rise nozzle located in the upper part of the tube with water spraying straight down and under the nozzles mounted electric heater with adjustable temperature.2. The device under item 1, characterized in that under an electric heater, a fan for supplying variable speed air flow in the direction perpendicular to the chimney.
FIELD: building, particularly for industrial chimneys construction and reconstruction.
SUBSTANCE: chimney comprises load-carrying latticed metal frame and gas-escape channel secured in frame. Gas-escape channel is composed of separate tubular sections along the full length thereof and is provided with sliding compensators connected with load-bearing frame and dividing channel into separate side-bars. Sliding compensators provide holding side-bars in axial direction during chimney assemblage. Gas-escape channel is formed in element-wise manner of multilayer panels produced of polyolefin. When connected in tubular sections panels create polyhedral side surface provided with support flanges arranged along the full perimeter thereof for sections connection one to another with side-bars forming. Support flanges have L-shaped extensions forming funnels in which lower part of another section is inserted. Support flange positions in lower section parts are adjusted along L-shaped extension height.
EFFECT: increased service life, economy and operational reliability along with reduced cost of chimney construction.
1 cl, 5 dwg
FIELD: building, particularly chimneys for atomic plant stations and nuclear fuel processing plants to periodic drain air after cleaning thereof from radioactive and hazardous materials by filtering air and to provide emergency effluent of above substances in gaseous and aerosol state.
SUBSTANCE: chimney comprises shell-shaped head and main annular plate secured to shell. Head is provided with connection pipe coaxial to head so that a gap is formed in-between. Head has additional annular plate secured over main annular plate. Formed between main and additional plates is chamber communicating chimney hollow with atmosphere. Lower annular plate has edge bent upwards.
EFFECT: increased reliability of radioactive and hazardous substances effluent due to dissipating thereof under windless conditions, provision of air cavity disturbing at chimney head under windy conditions and, as a result, prevention or minimizing of radioactive gas concentration in chimney during normal operation and additional dissipation of above substances during emergency effluent thereof.
2 cl, 4 dwg
FIELD: chimney production, assemblage, repair and reconstruction, particularly for large chimneys having diameter of not less than 4 m at chimney base.
SUBSTANCE: chimney shaft to be arranged in sections inside chimney has relieving means to unload shaft sections of lower section weights. Relieving means is mounted along chimney height by connecting each detachable section with cylindrical pipes or rods. Each transversal dimension of cylindrical pipes is 75-250 times less than chimney diameter and preferably is equal to 50-80 mm. Transversal dimension of rods is 250-700 times less than chimney diameter and preferably is equal to 15-50 mm. Cylindrical pipes and/or rods are located in shaft hollow in parallel to axis thereof from outer shaft axis and/or inside chimney walls. Pipes and/or rods are connected to chimney in upper part thereof and take all weight of shaft sections. Method of chimney repair with the use of above shaft is also disclosed.
EFFECT: reduced labor inputs for chimney production, transportation and assemblage, increased erection rate, reduced material consumption, improved maintainability.
8 cl, 14 dwg
FIELD: building, particularly for erecting electric power station chimney.
SUBSTANCE: method involves supplying air heated in air heater into air chimney duct formed between reinforced concrete shaft and lining defining gas vent duct; ejecting fuel gases moving through gas vent duct into upper atmosphere; directing heated air at the first through one part of air duct in bottom-top direction and then through another part thereof in top-bottom direction through annular box; supplying heated area to inlet box of air heater; admixing cold air to heated air to compensate air losses; moving the mixture of cold and heated air into air heater to increase air temperature and repeated supplying heated air to air chimney duct.
EFFECT: increased chimney operational efficiency.
1 cl, 2 dwg
FIELD: building, particularly tall building structures, adapted, for instance, to construct chimneys of heat power plants, industrial boilers and exhaust gas discharge facilities.
SUBSTANCE: chimney comprises chimney base, load-carrying shaft, gas duct arranged inside the load-carrying shaft and foundation for chimney supporting. The gas duct is fixedly connected to the base and has free end part projecting over load-bearing shaft top.
EFFECT: simplified structure and increased operational reliability.
4 cl, 2 dwg
FIELD: building, particularly to erect load-bearing chimneys and ventilation ducts.
SUBSTANCE: method involves layered chimney sections assemblage with the use of pulley-and-cable load hoisting system, which lifts load by means of at least two cranes to be installed on chimney sections. Chimney section is assembled of vertical members, which are inserted through chimney interior by alternately installing each member from each crane side. Then cranes are moved by mutual lifting thereof with the use of pulley-and-cable load hoisting system.
EFFECT: possibility to erect load-bearing building structures in restricted space.
2 cl, 3 dwg
FIELD: combustion apparatus or combustion processes.
SUBSTANCE: boiling pant comprises chimney with air duct interposed between the load-bearing ferroconcrete shaft and lining that define a gas discharging passage, and heat exchanger for heating air and fan for supplying heater air to the air passage of the chimney that underlie the gas discharging passage of the chimney. The air duct is separated into two section by two vertical baffles. The vertical baffles have openings through which heated air flows from one of the sections of the air duct of the chimney to the other section.
EFFECT: enhanced efficiency.
FIELD: heat power engineering.
SUBSTANCE: boiler plant comprises boiler whose gas duct is connected with the chimney provided with ventilated air space between the load-bearing ferroconcrete shaft and lining that defines the gas discharging passage, heat exchanger for heating air, and fan for supplying air heated in the heat exchanger to the ventilated air space in the chimney. The heat exchanger and fan underlies the gas discharging passage of the chimney. The lining and the load-bearing shaft of the chimney are provided with inlet and outlet ports. The boiler plant is additionally provided with the duct for discharging heated air from the space of the chimney to the boiler for burning fuel. The discharging duct is composed of several sections. The ring section of the duct with varying width bounds the chimney from above at a level of outlet ports and is connected with the straight section of the duct mounted on the outer side of the chimney.
EFFECT: enhanced efficiency.
SUBSTANCE: invention relates to high structures and buildings construction technologies including smoke chimneys, exhaust stacks and method of their production. The production method for chimney exhaust channel from composite material provides for the chimney producing in the form of diffuser. For this purpose, the reinforced metal mesh is installed inside the supporting channel of smoke chimney. Then, ceramic slurry is applied from the both sides of the chimney. After that, the chimney is heated to sintering temperature by gas burner flame creating glass enamel layer. Above enamel layer, the reinforced mesh with cell size from 0.5 to 3.5 mm is again laid down. Each layer is enameled until the required thickness of gas removal channel is achieved. After that, protective brick lining layer is made from the internal side of the chimney. The invention also describes gas removal channel produced according to the above-described method.
EFFECT: improved strength of gas removal channel due to chemical, abrasive and temperature stability improvement.
2 cl, 1 dwg
SUBSTANCE: invention relates to construction technologies and may be used in gas removal channel structures of smoke chimney, and particularly, in channel structures made of composite materials. The technical result of the invention is the simplification of gas removal channel design, wider operational characteristics and improvement of maintainability. Gas removal channel of smoke chimney consists of the panels with side edges directed outside. The side edges are arranged as annular bands along chimney height. The side edges are made of composite material based on the manufactured reinforcing fiber and polymer binder. The gas removal channel also consists of mechanical fastening elements for panels fixing to each other. The channel panels are made curvilinear or flat. The flat panels are rigid, each of them is provided with additional jointing end edges directed perpendicular and outside until it joins jointing side edges. Thus, closed trough-shaped structure is formed. Mechanical fasteners are located in holes of all edges. In addition, each panel is provided with, at least, one stiffening rib being outside or inside between the jointing end edges and represented with glass-fiber-reinforced moulding profile from composite material.
EFFECT: simplification of gas removal channel design, wider operational characteristics and improvement of maintainability.
24 cl, 3 dwg
FIELD: water heating.
SUBSTANCE: boiler can be used for heating and hot water supplying. Boiler has rectangular closet provided with heat insulation and casing. There is furnace with burner, heat exchanger and branch pipe for letting combusting gas through outer wall of room's wall are disposed inside the closet. The branch pipe is provided with cassette filled with adsorption matter. Cassette is hermetically placed in branch pipe for letting combustion products out between casing of rectangular heat-protected closet and internal surface of outer wall of the room. Branch pipe for letting products of combustion out behind outer wall of the room is mounted in vertical and has cone-shaped muzzle with curvilinear planes and guides and twisting ribs.
EFFECT: improved ecological parameters of exploitation.
FIELD: recuperation of energy from hot gas.
SUBSTANCE: proposed method is used for recuperation of energy from hot gas having temperature above 650°C and absolute pressure above 1.7 bar; gas contains non-solidified compounds of alkali metals and particles. Proposed method includes the following stages: cooling gas to temperature below 550°C with the aid of shell-and-tube heat exchanger where hot gas is passed via inter-tube space and cooling water is passed via space inside tubes where steam is formed from which steam energy is recuperated; particles of gas are separated by means of one or more centrifugal separating units arranged in succession to obtain content of dust below 400 mg/Nm3; gas is expanded in expansion machine for recuperation of energy.
EFFECT: enhanced efficiency of recuperation.
16 cl, 1 dwg
FIELD: environmental protection; devices and the methods of control over NOx contents in the flue gases ejected from the boilers burning the carbonic fuels.
SUBSTANCE: the invention is pertaining to the device and the method of control over NOx contents in the flue gases ejected from the boilers burning the carbonic fuels. The method includes injection of the carbonic fuel and the air into the burning zone of the furnace of the boiler for incineration of the carbonic fuel in the conditions of oxidization and production of the flue gas includingNOx and CO, and directing the flue gas from the furnace into the section of the catalyst in the channel of the flue gas for restoration of NOx and CO and conversion of the NOx and CO without injection of the external reactant intoN2 and CO2 by usage of CO in the capacity ofthe deoxidizer for NOx on the catalyst in the catalytic section. The technical result of the invention is development of the device and the method for control over the NOx ejections from the boilers burning the carbonic fuels, which are maintaining the high thermal efficiency of the boilers without the increase of ejections of other pollutions and which do not use any external reactant.
EFFECT: the invention ensures development of the device and the method for control over the nitrogen dioxide ejections from the boilers burning the carbonic fuels, which are maintaining the high thermal efficiency of the boilers without the increase of the ejections of other pollutions and which do not use any external reactant.
18 cl, 2 dwg
FIELD: environmental protection processes.
SUBSTANCE: invention relates to environmental protection systems designed to detoxify industrial emissions of multiple-profile enterprises dealing with processing of all types of mineral raw materials and can be used for detoxifying emissions from metallurgical and chemical enterprises as well as those of heat-power complex. Process of invention comprises cooling and condensation of flue gases followed by withdrawal of condensate and treated gases. At the height of 2/3 chimney, flue gas is mixed with overheated (150-200°C) steam and cooling and condensation of steam-gas mixture are performed in atmosphere beyond the chimney. Condensate formed from air-drop flow is collected on trays on the area adjusting the basement of chimney.
EFFECT: reduced operation expenses on efficient purification of flue gas from solid and gaseous pollutants.
FIELD: the invention is assigned for cleaning air from combustion products and may be used in water heaters and heating apparatus.
SUBSTANCE: the boiler has a rectangular cupboard with heating protection and a jacket in which there a fire-chamber with a burner, a heat exchanger and an outlet socket of combustion products through an exterior wall of the premises on which there is a hermetically installed cassette with absorbing substance. The outlet socket has a cone-shaped nozzle with curvilinear planes and guide twisting ribs. The cone-shaped nozzle is fulfilled out of a bimetal, at that the material of the bimetal has from the side of the curvilinear planes a coefficient of thermal conductivity prevailing in 2,0-2,3 times higher the meaning of the coefficient of thermal conductivity of the material from the side of environment.
EFFECT: the invention provides maintaining of normalized parameters of the work of the gas heating boiler during prolong operation at availability of an impact on the cone-shaped nozzle as of positive so as of negative temperatures of the environment.
SUBSTANCE: invention relates to water heating and can be used for heating and hot water supply of apartments in residential houses. The gas heating boiler consists of thermally protected rectangular case with a casing accommodating a furnace with a torch, heat exchanger and branch pipe for combustion products output through an external wall of the premises, the said branch pipe being vertically installed and containing a cone-shaped nozzle with curvilinear planes along with directing and twisting edges. The branch pipe further incorporates a cartridge with adsorbing medium, tightly installed in the branch pipe for combustion products output between the casing of thermally protected rectangular case and internal surface of the premises external wall. The cartridge includes a vertical case supplied with top and bottom collectors, and lateral walls which, along with the section partitions installed in the said casing, are made zigzag and form in each section diffusers and confusors arranged in a chessboard order relative to the nearby sections.
EFFECT: decrease in harmful gaseous pollutants emitted into the air environment around the premises from a branch pipe for combustion products output.