CN116272354A - Smoke denitration device of garbage incineration power generation furnace - Google Patents
Smoke denitration device of garbage incineration power generation furnace Download PDFInfo
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- CN116272354A CN116272354A CN202310267704.4A CN202310267704A CN116272354A CN 116272354 A CN116272354 A CN 116272354A CN 202310267704 A CN202310267704 A CN 202310267704A CN 116272354 A CN116272354 A CN 116272354A
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- catalyst
- flue gas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8631—Processes characterised by a specific device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/88—Handling or mounting catalysts
- B01D53/885—Devices in general for catalytic purification of waste gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/96—Regeneration, reactivation or recycling of reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Abstract
The invention relates to the field of flue gas denitration, in particular to a flue gas denitration device of an electric power generating furnace for incinerating garbage. The technical problems of the invention are as follows: in the denitration treatment of the flue gas, ammonia water is sprayed to reduce the temperature of the flue gas, and large particles in the flue gas can block the catalyst. The technical scheme of the invention is as follows: the flue gas denitration device for the garbage incineration power generation furnace comprises an ammonia water spraying system, a catalyst cleaning system and the like; the pipe body is provided with an ammonia water spraying system; the tube body is provided with a clean-up catalyst system. According to the invention, the sprayed ammonia water is caught by the ammonia water spraying system, and the smoke is blocked, so that the sprayed ammonia water can not lower the temperature of the smoke, and the inlet and outlet of the first catalyst are cleaned by the catalyst cleaning system, so that the flow rate of part of channels of the first catalyst is accelerated, and large particles on the first catalyst can not be accumulated, so that the first catalyst can not be blocked.
Description
Technical Field
The invention relates to the field of flue gas denitration, in particular to a flue gas denitration device of an electric power generating furnace for incinerating garbage.
Background
A large amount of flue gas can be generated in the garbage incineration process, the flue gas contains a large amount of nitric oxide and nitrogen dioxide, the nitric oxide and the nitrogen dioxide are air pollutants and cannot be directly discharged, the flue gas is required to be subjected to denitration treatment, the common denitration mode in the prior art is to reduce the nitric oxide and the nitrogen dioxide by utilizing ammonia, the reduction of the nitric oxide and the nitrogen dioxide by the ammonia needs a catalyst and the temperature can be reacted under the condition of three hundred to four hundred ℃, the ammonia is generally generated by adopting an ammonia spraying mode, the ammonia also contains a large amount of water, the temperature of the flue gas is greatly reduced when the ammonia is sprayed, the temperature of the flue gas is further reduced, the reaction temperature is further reduced, the reaction efficiency is further reduced, the ammonia is further increased along with the flue gas when the ammonia is sprayed, the water in the ammonia is evaporated into water vapor for a certain time, the catalyst is further easily brought into the catalyst to be deactivated, and the reaction efficiency is reduced;
and because the catalyst is cellular, and denitration treatment is generally put before the dust removal, and then still contains a large amount of large granules in the flue gas when denitration treatment to lead to having large granule to pile up in the catalyst, and then jam catalyst after piling up, and then make reaction efficiency reduce, and because the type of the rubbish of burning is different, and then lead to nitric oxide and nitrogen dioxide's in the flue gas content unstable, and then lead to there to have a lot of ammonia, and still contain sulfur trioxide in the flue gas, and then unnecessary ammonia can react with sulfur trioxide and produce sulfamic acid, and sulfamic acid has corrosivity, and then corrodes downstream equipment.
Disclosure of Invention
The invention provides a flue gas denitration device of an electric power generation furnace for incinerating garbage, aiming at overcoming the defects that in the denitration treatment of flue gas, ammonia water is sprayed to reduce the temperature of the flue gas and large particles in the flue gas can block a catalyst.
The technical scheme is as follows: the flue gas denitration device for the garbage incineration power generation furnace comprises a heater, an ammonia water spraying system, a catalyst cleaning system and an escape treatment system; the outer wall of the tube body is provided with a heater; the pipe body is provided with an ammonia water spraying system which is positioned below the heater; the pipe body is provided with a cleaning catalyst system, and the cleaning catalyst system is positioned in the heater; the pipe body is provided with an escape processing system which is positioned above the heater; the ammonia spraying system is used for spraying ammonia into the pipe body, the catalyst cleaning system is used for cleaning large particles on an inlet and an outlet of the first catalyst, and the escape treatment system is used for mixing smoke and collecting generated sulfamic acid.
Further, the ammonia water spraying system comprises an ammonia water spraying component and an evaporation cleaning component; the pipe body is provided with an ammonia water spraying component; the pipe body is provided with an evaporation cleaning component which is positioned below the ammonia water spraying component; the ammonia spraying component is used for spraying ammonia into the pipe body, and the evaporation cleaning component is used for catching the ammonia and blocking smoke.
Further, the ammonia water spraying component comprises an ammonia inlet pipe, a first fan, a connecting pipe and an ammonia water spraying head; the pipe body is provided with an ammonia inlet pipe; the ammonia inlet pipe is rotationally connected with a first fan, and is communicated with the first fan; the five fan blades of the first fan are fixedly connected with a connecting pipe; the five connecting pipes are fixedly connected with two ammonia spraying heads, and the first fan is communicated with the ammonia spraying heads through the connecting pipes; the ammonia water spraying head is used for spraying ammonia water into the pipe body.
Further, the evaporation cleaning component comprises a first conical plate; the pipe body is fixedly connected with a first conical plate, and the first conical plate is positioned below the first fan; the first conical plate is used for catching ammonia water and blocking smoke.
Further, the upper surface of the first conical plate is provided with high-temperature resistant bristles.
Further, the cleaning catalyst system comprises a first bearing seat, a rotating shaft, a rotating rod, an upper cleaning sheet and a lower cleaning sheet; the pipe body is fixedly connected with a first bearing seat, and the first bearing seat is positioned above the first fan; the first bearing seat is rotationally connected with a rotating shaft which is fixedly connected with the first fan; the rotating shaft is fixedly connected with three upper cleaning sheets in annular arrays, and the lower surface of each upper cleaning sheet is provided with high-temperature resistant bristles; the rotating shaft is fixedly connected with six lower cleaning sheets in an annular array, the six lower cleaning sheets are in a group, the two lower cleaning sheets in the same group are mutually symmetrical, a gap is reserved between the two lower cleaning sheets in the same group, and the upper surface of each lower cleaning sheet is provided with high-temperature-resistant bristles; the upper and lower cleaning sheets are used to sweep away large particles on the inlet and outlet ports on the first catalyst.
Further, the escape processing system comprises a mixing component and a byproduct processing component; the pipe body is provided with a mixing component; the pipe body is provided with a byproduct processing component, and the byproduct processing component is positioned above the mixing component; the mixing component is used for mixing the flue gas, and the byproduct processing component is used for collecting sulfamic acid generated by ammonia and sulfur trioxide.
Further, the mixing assembly comprises a second conical plate, a third conical plate, an outer ring cleaning block and an inner ring cleaning block; the rotating shaft is fixedly connected with a second conical plate; the pipe body is fixedly connected with a third conical plate, the diameter of the outer ring of the third conical plate is larger than that of the outer ring of the second conical plate, and the outer ring of the third conical plate is attached to the inner ring of the pipe body; the third conical plate is fixedly connected with a second catalyst; the second conical plate is fixedly connected with six annular array outer ring cleaning blocks, the six outer ring cleaning blocks are in a group, the two outer ring cleaning blocks in the same group are mutually symmetrical, a gap is formed between the outer ring cleaning blocks in the same group, and one side, close to the center of the pipe body, of the outer ring cleaning blocks is provided with high-temperature resistant bristles; the second conical plate is fixedly connected with three annular array inner ring cleaning blocks, and one side of each inner ring cleaning block, which is far away from the circle center, is provided with high-temperature resistant bristles; the second conical plate and the third conical plate are used for mixing the flue gas.
Further, the upper cleaning piece and the inner ring cleaning block are both V-shaped plates.
Further, the byproduct processing assembly comprises a fourth conical plate, a second bearing, a second fan, a scraping plate, a collecting plate, a handle and a motor; the pipe body is fixedly connected with a fourth conical plate, and the fourth conical plate is positioned above the third conical plate; the pipe body is fixedly connected with a second bearing which is distributed up and down; a second fan is rotationally connected between the two second bearings; the second fan is fixedly connected with three scraping plates in annular arrays, and the scraping plates are in sliding connection with the fourth conical plate; the pipe body is connected with a handle in a sliding way; the handle is fixedly connected with a collecting plate, and the collecting plate is positioned below the fourth conical plate; the pipe body is fixedly connected with a fifth conical plate, the fifth conical plate is positioned below the fourth conical plate, and the fifth conical plate is attached to the fourth conical plate; the second bearing seat is fixedly connected with a motor, an output shaft of the motor is fixedly connected with the second fan, and the motor is provided with a dust cover; the fourth conical plate and the scraper are used for collecting the sulfamic acid generated by ammonia and sulfur trioxide.
The beneficial effects of the invention are as follows: according to the invention, the sprayed ammonia water is caught by the ammonia water spraying system and blocks the flue gas, so that the sprayed ammonia water can not cause the temperature of the flue gas below to be reduced, the problem that the ammonia water spraying in the prior art can cause the temperature of the flue gas to be reduced is solved, and the unvaporized water can not rise to the catalyst, so that the problem that the unvaporized water rises to the catalyst to deactivate the catalyst in the prior art is solved, the inlet and outlet of the first catalyst are cleaned by the catalyst cleaning system, the flow rate of part of channels of the first catalyst is accelerated, and then large particles on the first catalyst can not be accumulated, so that the first catalyst can not be blocked, the problem that the large particles in the flue gas in the prior art can block the catalyst is solved, the sulfamic acid generated by ammonia and sulfur trioxide is collected by the escape treatment system, and the problem that the sulfamic acid can corrode downstream equipment in the prior art is solved.
According to the invention, the ammonia water is sprayed through the ammonia water spraying head, the sprayed ammonia water is caught through the first conical plate, and the smoke is blocked, so that the problem that the temperature of the smoke is reduced due to the ammonia water spraying in the prior art is solved, and the unvaporized water does not rise to the catalyst, so that the problem that the unvaporized water rises to the catalyst to deactivate the catalyst in the prior art is solved.
According to the invention, large particles adhered to the inlet and the outlet of the first catalyst are cleaned through the rotation of the upper cleaning sheet and the lower cleaning sheet, and then the smoke is collected to the middle of the two lower cleaning sheets by the two adjacent lower cleaning sheets when passing through the lower cleaning sheet, so that the flow rate of the smoke entering the first catalyst from the middle of the two lower cleaning sheets is increased, the large particles adhered to the first catalyst channel are blown off, and the second catalyst is cleaned through the outer ring cleaning block and the inner ring cleaning block, so that the large particles on the first catalyst and the second catalyst cannot be accumulated, and the first catalyst and the second catalyst cannot be blocked, thereby solving the problem that the large particles in the smoke in the prior art block the catalyst.
According to the invention, the temperature of the fourth conical plate is controlled below two hundred twenty five ℃ through the temperature controller externally connected with the fourth conical plate, so that sulfamic acid is solid or liquid and is adhered to the upper surface of the fourth conical plate, the sulfamic acid adhered to the fifth conical plate is scraped off through the scraping plate, and the sulfamic acid is collected in the collecting plate, so that the problem that downstream equipment is corroded by the sulfamic acid in the prior art is solved.
Drawings
FIG. 1 is a schematic diagram of a structure disclosed by a flue gas denitration device of an electric power generation furnace for incinerating garbage;
FIG. 2 is a first partial cross-sectional view of a flue gas denitration device for a garbage-burning power generation furnace according to the present invention;
FIG. 3 is a second partial cross-sectional view of the flue gas denitration device of the garbage-burning power generation furnace disclosed by the invention;
FIG. 4 is a third partial cross-sectional view of a flue gas denitration device for a garbage-burning power generation furnace according to the present invention;
FIG. 5 is an enlarged view of the position A of FIG. 4, which is disclosed by the flue gas denitration device of the electric power generation furnace for incinerating garbage;
FIG. 6 is a schematic diagram of a combined structure of an escape treatment system and a second catalyst disclosed by the flue gas denitration device of the garbage-burning power generation furnace;
fig. 7 is a fourth partial sectional view of the flue gas denitration device of the garbage-burning power generation furnace disclosed by the invention.
In the above figures: the device comprises a first pipe body, a 2-heater, a 3-first catalyst, a 4-second catalyst, a 101-ammonia inlet pipe, a 102-first fan, a 103-connecting pipe, a 104-ammonia injection water head, a 111-first conical plate, a 201-first bearing seat, a 202-rotating shaft, a 203-rotating rod, a 204-upper cleaning sheet, a 205-lower cleaning sheet, a 301-second conical plate, a 302-third conical plate, a 303-outer ring cleaning block, a 304-inner ring cleaning block, a 311-fourth conical plate, a 312-second bearing seat, a 313-second fan, a 314-scraping plate, a 315-collecting plate, a 316-handle, a 317-fifth conical plate and a 318-motor.
Description of the embodiments
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
The flue gas denitration device of the garbage incineration power generation furnace, as shown in figures 1-7, comprises a heater 2, an ammonia water spraying system, a catalyst cleaning system and an escape treatment system; the outer wall of the pipe body 1 is provided with a heater 2; the pipe body 1 is provided with an ammonia water spraying system which is positioned below the heater 2; the pipe body 1 is provided with a cleaning catalyst system, and the cleaning catalyst system is positioned in the heater 2; the pipe body 1 is provided with an escape processing system which is positioned above the heater 2; the ammonia water is sprayed out through the ammonia water spraying system, then the ammonia water is caught, the smoke is blocked, the ammonia water can not influence the temperature of the smoke below, the smoke can not drive the water which is not evaporated to rise, the flow speed of the channel of the partial first catalyst 3 is accelerated by cleaning the catalyst system, and then large particles in the first catalyst 3 can not be accumulated, so that the channel of the first catalyst 3 can not be blocked.
In the denitration treatment of the flue gas, ammonia water is sprayed to reduce the temperature of the flue gas, and large particles in the flue gas can block the catalyst; the invention specifically works, firstly, the invention is manually installed in a smoke outlet pipeline for incinerating garbage, then smoke starts to rise, when the smoke passes through an ammonia water spraying system, ammonia water is sprayed by the ammonia water spraying system and then is received, the smoke is blocked, further, the smoke rises and does not blow the sprayed ammonia water, then when the smoke rises to the position of a cleaning catalyst system, the ammonia gas and nitric oxide and nitrogen dioxide in the smoke undergo a reduction reaction, further denitration is carried out, the inlet and outlet of the first catalyst 3 are cleaned through the cleaning catalyst system, the flow rate of part of channels of the first catalyst 3 is accelerated through the cleaning catalyst system, further large particles in the first catalyst 3 cannot be accumulated, then when the smoke rises to the position of an escape processing system, the escape processing system mixes the smoke, further, redundant ammonia gas can be reduced with follow-up unreacted nitric oxide and nitrogen dioxide, and then the escape processing system collects sulfamic acid generated by the ammonia gas and sulfur trioxide; the ammonia water spraying system is used for catching sprayed ammonia water and blocking smoke, so that the sprayed ammonia water can not enable the temperature of the smoke below to be reduced, the problem that the sprayed ammonia water in the prior art can enable the temperature of the smoke to be reduced is solved, unvaporized water can not rise to a catalyst, the problem that unvaporized water rises to the catalyst to enable the catalyst to be deactivated in the prior art is solved, the inlet and outlet of the first catalyst 3 are cleaned through the catalyst cleaning system, the flow rate of a part of channels of the first catalyst 3 is accelerated, large particles on the first catalyst 3 can not be accumulated, the first catalyst 3 can not be blocked, the problem that the large particles in the smoke in the prior art can block the catalyst is solved, the sulfamic acid generated by ammonia and sulfur trioxide is collected through the escape processing system, and the problem that sulfamic acid can corrode downstream equipment in the prior art is solved.
The ammonia water spraying system comprises an ammonia water spraying component and an evaporation cleaning component; the pipe body 1 is provided with an ammonia water spraying component; the evaporation cleaning component is installed on the pipe body 1, and is located below the ammonia water spraying component.
The ammonia water spraying assembly comprises an ammonia inlet pipe 101, a first fan 102, a connecting pipe 103 and an ammonia water spraying head 104; the pipe body 1 is provided with an ammonia inlet pipe 101; the ammonia inlet pipe 101 is rotationally connected with a first fan 102, and the ammonia inlet pipe 101 is communicated with the first fan 102; the five blades of the first fan 102 are fixedly connected with a connecting pipe 103; the five connecting pipes 103 are fixedly connected with two ammonia spraying heads 104, and the first fan 102 is communicated with the ammonia spraying heads 104 through the connecting pipes 103.
The evaporation cleaning assembly comprises a first conical plate 111; the pipe body 1 is fixedly connected with a first conical plate 111, and the first conical plate 111 is positioned below the first fan 102.
The upper surface of the first conical plate 111 is provided with high-temperature resistant bristles, so that the ammonia spraying water head 104 can be cleaned through the bristles on the first conical plate 111.
The cleaning catalyst system comprises a first bearing seat 201, a rotating shaft 202, a rotating rod 203, an upper cleaning sheet 204 and a lower cleaning sheet 205; the pipe body 1 is fixedly connected with a first bearing seat 201, and the first bearing seat 201 is positioned above the first fan 102; the first bearing seat 201 is rotatably connected with a rotating shaft 202, and the rotating shaft 202 is fixedly connected with the first fan 102; the rotating shaft 202 is fixedly connected with three upper cleaning sheets 204 in an annular array, and the lower surface of each upper cleaning sheet 204 is provided with high-temperature resistant bristles; the rotating shaft 202 is fixedly connected with six lower cleaning sheets 205 in an annular array, the six lower cleaning sheets 205 are in a group, the two lower cleaning sheets 205 in the same group are mutually symmetrical, a gap is reserved between the two lower cleaning sheets 205 in the same group, and the upper surface of the lower cleaning sheets 205 is provided with high-temperature resistant bristles; the flow rate of the channels of a part of the first catalyst 3 is increased by the lower cleaning sheet 205, so that large particles in the first catalyst 3 cannot be accumulated, and thus the channels of the first catalyst 3 cannot be blocked.
The escape processing system comprises a mixing component and a byproduct processing component; the pipe body 1 is provided with a mixing component; the pipe body 1 is installed with a byproduct processing assembly, and the byproduct processing assembly is located above the mixing assembly.
The mixing assembly comprises a second conical plate 301, a third conical plate 302, an outer ring cleaning block 303 and an inner ring cleaning block 304; the rotating shaft 202 is fixedly connected with a second conical plate 301; the pipe body 1 is fixedly connected with a third conical plate 302, the diameter of the outer ring of the third conical plate 302 is larger than that of the outer ring of the second conical plate 301, and the outer ring of the third conical plate 302 is attached to the inner ring of the pipe body 1; the third conical plate 302 is fixedly connected with a second catalyst 4; the second conical plate 301 is fixedly connected with six annular array outer ring cleaning blocks 303, the six outer ring cleaning blocks 303 are in a group, the two outer ring cleaning blocks 303 in the same group are mutually symmetrical, a gap is reserved between the outer ring cleaning blocks 303 in the same group, and high-temperature resistant bristles are arranged on one side, close to the center of the circle of the tube body 1, of the outer ring cleaning blocks 303; the second conical plate 301 is fixedly connected with three annular arrays of inner ring cleaning blocks 304, and one side, far away from the center of the circle, of the inner ring cleaning blocks 304 is provided with high-temperature resistant bristles.
The upper cleaning sheet 204 and the inner ring cleaning block 304 are V-shaped plates, so that the large particles attached to the upper cleaning sheet 204 and the inner ring cleaning block 304 can be blown away by the flue gas flowing out of the first catalyst 3 and the second catalyst 4, thereby preventing the large particles from accumulating on the upper cleaning sheet 204 and the inner ring cleaning block 304.
The byproduct processing assembly includes a fourth tapered plate 311, a second bearing 312, a second fan 313, a scraper 314, a collection plate 315, a handle 316, and a motor 318; the pipe body 1 is fixedly connected with a fourth conical plate 311, and the fourth conical plate 311 is positioned above the third conical plate 302; the pipe body 1 is fixedly connected with a second bearing seat 312 which is distributed up and down; a second fan 313 is rotatably connected between the two second bearings 312; the second fan 313 is fixedly connected with three scraping plates 314 in annular arrays, and the scraping plates 314 are in sliding connection with the fourth conical plate 311; the pipe body 1 is connected with a handle 316 in a sliding way; the handle 316 is fixedly connected with a collecting plate 315, and the collecting plate 315 is positioned below the fourth conical plate 311; the pipe body 1 is fixedly connected with a fifth conical plate 317, the fifth conical plate 317 is positioned below the fourth conical plate 311, and the fifth conical plate 317 is attached to the fourth conical plate 311; the second bearing seat 312 is fixedly connected with a motor 318, an output shaft of the motor 318 is fixedly connected with the second fan 313, and the motor 318 is provided with a dust cover.
The second fan 313 has an anti-corrosion coating thereon, thereby preventing the second fan 313 from being corroded by sulfamic acid.
The motor 318 is a high temperature resistant special motor.
The invention specifically works by firstly installing the invention in a flue gas outlet pipeline of a garbage incineration power generation furnace, then switching on a power supply for the invention, then externally connecting a water pump for conveying ammonia water to an ammonia inlet pipe 101, then placing a first catalyst 3 between an upper cleaning sheet 204 and a lower cleaning sheet 205, then controlling a heater 2 and a heating device of a first conical plate 111 to start heating, so that the temperature inside the heater 2 and the temperature of the first conical plate 111 reach three hundred to four hundred ℃ to reach the temperature required by reduction reaction, then starting to incinerate garbage by the garbage incineration power generation furnace, further starting to generate flue gas containing nitric oxide and nitrogen dioxide, when the flue gas passes through the first conical plate 111, as the first conical plate 111 is attached to a pipe body 1, the flue gas can only rise from the inner ring of the first conical plate 111, so that the flow rate of the flue gas at the position of the first fan 102 above the first conical plate 111 is accelerated, the first fan 102 is blown to rotate anticlockwise when seen from top to bottom, the connecting pipe 103 and the ammonia spraying water head 104 are driven to rotate, meanwhile, the water pump for externally connecting the ammonia inlet pipe 101 to convey the ammonia water is controlled to start, the ammonia water is conveyed into the ammonia inlet pipe 101, then the ammonia water is sprayed through the ammonia spraying water head 104, the flue gas is blocked by the first conical plate 111, the ammonia water sprayed by the ammonia spraying water head 104 cannot float upwards when being blown by the flue gas, so that the ammonia water can be sprayed on the upper surface of the first conical plate 111, the ammonia water can be changed into ammonia gas and water vapor in a short time due to the high temperature of the first conical plate 111, and then the ammonia water starts to rise together with the flue gas, so that the temperature of the flue gas below the first conical plate 111 cannot be reduced, and the flue gas can keep high temperature when rising to the first catalyst 3, the reduction reaction can be better performed, when the temperature of the first conical plate 111 is reduced, a heating device externally connected with the first conical plate 111 can be controlled to heat the first conical plate 111, so that the temperature of the flue gas passing through the first conical plate 111 is prevented from being reduced due to the fact that the temperature of the first conical plate 111 is reduced, then the flue gas and the ammonia gas can be mixed together by rotating the first fan 102 when the flue gas and the ammonia gas pass through the first fan 102, and the phenomenon that the reaction is insufficient due to uneven ammonia gas distribution is avoided;
when the mixed gas of ammonia and flue gas enters the first catalyst 3, the ammonia and the flue gas start to undergo a reduction reaction at the temperature of three hundred to four hundred degrees celsius under the action of the first catalyst 3, so that nitric oxide and nitrogen dioxide in the flue gas are reduced into nitrogen and water, then, as the content of the nitric oxide and the nitrogen dioxide in the flue gas is unstable, the mixed gas at the position of the third conical plate 302 cannot directly enter the second catalyst 4 due to the fact that the content of the nitric oxide and the nitrogen dioxide in the flue gas is low, and when the content of the nitric oxide and the nitrogen dioxide in the flue gas is high, the nitric oxide and the nitrogen dioxide are not reduced, and then, when the mixed gas rises to the second conical plate 301, the mixed gas is blocked by the second conical plate 301, and then, the mixed gas rises along the second conical plate 301, and is blocked by the third conical plate 302, and then, the mixed gas needs to flow into the second catalyst 4 under the pushing of the subsequent mixed gas, and the mixed gas is arranged obliquely downwards, so that the mixed gas at the position of the third conical plate 302 cannot directly enters the second catalyst 4, and the mixed gas is further fully reduced with the nitrogen dioxide under the pushing action of the second catalyst 4, and the mixed gas is further fully reduced;
it should be noted that, when passing through the first catalyst 3, a large amount of large particles are adhered to the first catalyst 3, and the holes on the first catalyst 3 are smaller, so that the first catalyst 3 is very easy to be blocked, and the available reaction area is reduced, so that the reaction is insufficient, when the flue gas rises, the rotating rod 203, the upper cleaning sheet 204 and the lower cleaning sheet 205 can be driven by the first fan 102 to rotate, and then the large particles adhered to the inlet and the outlet of the first catalyst 3 are cleaned by the upper cleaning sheet 204 and the lower cleaning sheet 205, and then the flue gas is collected by the two adjacent lower cleaning sheets 205 to the middle of the two lower cleaning sheets 205 when passing through the lower cleaning sheet 205, and then enters the first catalyst 3, so that the flow rate of the flue gas entering the first catalyst 3 from the middle of the two lower cleaning sheets 205 is increased, thereby blowing away large particles adhered to the inside of the first catalyst 3 channel, preventing the adhered large particles of the first catalyst 3 channel from accumulating, and when the flue gas rises, the first fan 102 can drive the second conical plate 301 to rotate, and then the second conical plate 301 can drive the outer ring cleaning block 303 and the inner ring cleaning block 304 to rotate, so as to clean the second catalyst 4, and the flow rate of the inlet of part of the second catalyst 4 through the outer ring cleaning block 303 is accelerated, and then the large particles in the second catalyst 4 are prevented from accumulating, so as to prevent the second catalyst 4 from blocking, and the large particles are adhered to the ammonia spraying head 104, and then the ammonia spraying head 104 is blocked, so that the spraying amount of ammonia is reduced, and when the flue gas rises, the first fan 102 can drive the ammonia spraying head 104 to rotate on the first conical plate 111, the high-temperature resistant bristles on the first conical plate 111 clean away large particles attached to the ammonia spraying head 104, so that the ammonia spraying head 104 is prevented from being blocked;
it should be noted that, still, some of the excess ammonia is not reacted, and then the excess ammonia will react with sulfur trioxide in the flue gas to generate sulfamic acid, and sulfamic acid is in a liquid state at a temperature of two hundred and fifteen to twenty-five degrees celsius and has corrosiveness, and then is adhered to the pipe body 1 at two hundred and fifteen to twenty-five degrees celsius, and corrodes the pipe body 1, and when the mixed gas containing sulfamic acid rises to the position of the fourth conical plate 311, the mixed gas is blocked by the fifth conical plate 317, and then the mixed gas can only rise from the inner ring of the fifth conical plate 317, then diffuses out on the upper surface of the fourth conical plate 311, then the temperature of the fourth conical plate 311 is controlled below two hundred and twenty-five degrees celsius through a temperature controller externally connected with the fourth conical plate 311, and then the sulfamic acid is in a solid state or liquid state adhered to the upper surface of the fourth conical plate 311, and then the motor 318 is controlled to start, and the second fan 313 is driven to rotate, and then the scraper 314 is driven to rotate, and then the sulfamic acid adhered to the fifth conical plate 317 is pulled out, and then the sulfamic acid is collected by the scraper 315, and then the sulfamic acid is collected by the collector 315, and then the collector plate 315 is collected by the collector plate 315.
While the invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.
Claims (10)
1. The flue gas denitration device of the garbage incineration power generation furnace comprises a heater (2); the heater (2) is arranged on the outer wall of the pipe body (1); the method is characterized in that: the system also comprises an ammonia water spraying system, a catalyst cleaning system and an escape treatment system; the pipe body (1) is provided with an ammonia water spraying system which is positioned below the heater (2); the tube body (1) is provided with a cleaning catalyst system, and the cleaning catalyst system is positioned in the heater (2); the pipe body (1) is provided with an escape treatment system which is positioned above the heater (2); the ammonia water spraying system is used for spraying ammonia water into the pipe body (1), the catalyst cleaning system is used for cleaning large particles on an inlet and an outlet of the first catalyst (3), and the escape treatment system is used for mixing smoke and collecting generated sulfamic acid.
2. The flue gas denitration device of the garbage incineration power generation furnace according to claim 1, which is characterized in that: the ammonia water spraying system comprises an ammonia water spraying component and an evaporation cleaning component; the pipe body (1) is provided with an ammonia water spraying component; the pipe body (1) is provided with an evaporation cleaning component which is positioned below the ammonia water spraying component; the ammonia water spraying component is used for spraying ammonia water into the pipe body (1), and the evaporation cleaning component is used for catching the ammonia water and blocking smoke.
3. The flue gas denitration device of the garbage incineration power generation furnace according to claim 2, which is characterized in that: the ammonia water spraying assembly comprises an ammonia inlet pipe (101), a first fan (102), a connecting pipe (103) and an ammonia water spraying head (104); the pipe body (1) is provided with an ammonia inlet pipe (101); the ammonia inlet pipe (101) is rotationally connected with a first fan (102), and the ammonia inlet pipe (101) is communicated with the first fan (102); five fan blades of the first fan (102) are fixedly connected with a connecting pipe (103); the five connecting pipes (103) are fixedly connected with two ammonia spraying heads (104), and the first fan (102) is communicated with the ammonia spraying heads (104) through the connecting pipes (103); the ammonia water spraying head (104) is used for spraying ammonia water into the pipe body (1).
4. A flue gas denitration device for a garbage-burning power generation furnace according to claim 3, characterized in that: the evaporation cleaning component comprises a first conical plate (111); the pipe body (1) is fixedly connected with a first conical plate (111), and the first conical plate (111) is positioned below the first fan (102); the first conical plate (111) is used for catching ammonia water and blocking smoke.
5. The flue gas denitration device of the garbage incineration power generation furnace according to claim 4, which is characterized in that: the upper surface of the first conical plate (111) is provided with high-temperature resistant bristles.
6. The flue gas denitration device of the garbage incineration power generation furnace according to claim 4, which is characterized in that: the cleaning catalyst system comprises a first bearing seat (201), a rotating shaft (202), a rotating rod (203), an upper cleaning sheet (204) and a lower cleaning sheet (205); the pipe body (1) is fixedly connected with a first bearing seat (201), and the first bearing seat (201) is positioned above the first fan (102); the first bearing seat (201) is rotationally connected with a rotating shaft (202), and the rotating shaft (202) is fixedly connected with the first fan (102); the rotating shaft (202) is fixedly connected with three upper cleaning sheets (204) in annular arrays, and the lower surface of each upper cleaning sheet (204) is provided with high-temperature resistant bristles; the rotating shaft (202) is fixedly connected with six lower cleaning sheets (205) in an annular array, the six lower cleaning sheets (205) are in a group, the two lower cleaning sheets (205) in the same group are mutually symmetrical, a gap is reserved between the two lower cleaning sheets (205) in the same group, and the upper surface of each lower cleaning sheet (205) is provided with high-temperature resistant bristles; the upper cleaning sheet (204) and the lower cleaning sheet (205) are used for cleaning away large particles on the inlet and outlet on the first catalyst (3).
7. The flue gas denitration device of the garbage incineration power generation furnace according to claim 6, which is characterized in that: the escape processing system comprises a mixing component and a byproduct processing component; the pipe body (1) is provided with a mixing component; the pipe body (1) is provided with a byproduct processing component, and the byproduct processing component is positioned above the mixing component; the mixing component is used for mixing the flue gas, and the byproduct processing component is used for collecting sulfamic acid generated by ammonia and sulfur trioxide.
8. The flue gas denitration device of the garbage incineration power generation furnace according to claim 7, which is characterized in that: the mixing assembly comprises a second conical plate (301), a third conical plate (302), an outer ring cleaning block (303) and an inner ring cleaning block (304); the rotating shaft (202) is fixedly connected with a second conical plate (301); the pipe body (1) is fixedly connected with a third conical plate (302), the diameter of the outer ring of the third conical plate (302) is larger than that of the outer ring of the second conical plate (301), and the outer ring of the third conical plate (302) is attached to the inner ring of the pipe body (1); the third conical plate (302) is fixedly connected with a second catalyst (4); six annular array outer ring cleaning blocks (303) are fixedly connected to the second conical plate (301), the six outer ring cleaning blocks (303) are arranged in a group in pairs, the two outer ring cleaning blocks (303) of the same group are mutually symmetrical, a gap is reserved between the outer ring cleaning blocks (303) of the same group, and high-temperature resistant bristles are arranged on one side, close to the center of the tube body (1), of the outer ring cleaning blocks (303); the second conical plate (301) is fixedly connected with three annular array inner ring cleaning blocks (304), and one side, far away from the circle center, of each inner ring cleaning block (304) is provided with high-temperature resistant bristles; the second conical plate (301) and the third conical plate (302) are used for mixing the flue gas.
9. The flue gas denitration device of the garbage incineration power generation furnace according to claim 8, which is characterized in that: the upper cleaning piece (204) and the inner ring cleaning block (304) are both V-shaped plates.
10. The flue gas denitration device of the garbage incineration power generation furnace according to claim 8, which is characterized in that: the byproduct processing assembly comprises a fourth conical plate (311), a second bearing (312), a second fan (313), a scraper (314), a collecting plate (315), a handle (316) and a motor (318); the pipe body (1) is fixedly connected with a fourth conical plate (311), and the fourth conical plate (311) is positioned above the third conical plate (302); the pipe body (1) is fixedly connected with a second bearing (312) which is distributed up and down; a second fan (313) is rotatably connected between the two second bearings (312); the second fan (313) is fixedly connected with three scraping plates (314) in annular arrays, and the scraping plates (314) are in sliding connection with the fourth conical plate (311); the pipe body (1) is connected with a handle (316) in a sliding way; the handle (316) is fixedly connected with a collecting plate (315), and the collecting plate (315) is positioned below the fourth conical plate (311); the pipe body (1) is fixedly connected with a fifth conical plate (317), the fifth conical plate (317) is positioned below the fourth conical plate (311), and the fifth conical plate (317) is attached to the fourth conical plate (311); the second bearing seat (312) is fixedly connected with a motor (318), an output shaft of the motor (318) is fixedly connected with the second fan (313), and the motor (318) is provided with a dust cover; the fourth conical plate (311) and the scraper (314) are used for collecting the sulfamic acid generated by ammonia and sulfur trioxide.
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| CN116272354B (en) | 2023-10-20 |
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