CN116236901A - Separate-bin denitration reactor and working method thereof - Google Patents
Separate-bin denitration reactor and working method thereof Download PDFInfo
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- CN116236901A CN116236901A CN202310536906.4A CN202310536906A CN116236901A CN 116236901 A CN116236901 A CN 116236901A CN 202310536906 A CN202310536906 A CN 202310536906A CN 116236901 A CN116236901 A CN 116236901A
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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
- B01D53/8696—Controlling the catalytic process
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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
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/10—Mixing gases with gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The utility model relates to a separate bin type denitration reactor and working method thereof relates to the field of flue gas treatment technology, and it includes denitration reaction mechanism, denitration reaction mechanism one end intercommunication has into the tobacco pipe, it is arranged in leading-in denitration reaction mechanism with nitrogen-containing flue gas to advance the tobacco pipe, install the flue gas mixing board in the denitration reaction mechanism, install the closure baffle in the flue gas mixing board, install baffle switching mechanism on the closure baffle, baffle switching mechanism is used for adjusting closure baffle position, installs air extraction mechanism in the closure baffle. The online replacement of the catalyst layer of the denitration system is realized, and the effect of the step of replacing the catalyst layer of the denitration system is simplified.
Description
Technical Field
The application relates to the field of flue gas treatment technology, in particular to a separate bin type denitration reactor and a working method thereof.
Background
Nitrogen oxides are one of the main atmospheric pollutants, and after being mixed into the atmosphere, the nitrogen oxides can cause a series of problems affecting the global ecological environment, such as acid rain, photochemical smog and the like.
The main treatment methods of nitrogen oxides at present mainly comprise an SNCR method, an SCR method, an ozone oxidation method, an active carbon adsorption method and the like, wherein only the SNCR method and the SCR method are applied to large-scale coal-fired power plants commercially, the SCR method has mature process technology, high denitration efficiency and almost no secondary pollution, and the method is a denitration method mainly used at present. After the life of the catalysts used in current denitration system reactors reaches a limit or the catalyst fails due to other problems, the denitration system needs to stop and replace the catalyst layer.
With respect to the related art, the continuous operation and denitration efficiency of the denitration system can be affected when the catalyst layer is replaced.
Disclosure of Invention
In order to realize online replacement of a catalyst layer of a denitration system and simplify the step of replacing the catalyst layer of the denitration system, the application provides a separate-bin denitration reactor and a working method thereof.
The application provides a separate bin type denitration reactor and a working method thereof, which adopts the following technical scheme:
in a first aspect, the present application provides a bin-separated denitration reactor, which adopts the following technical scheme:
the separate bin type denitration reactor comprises a denitration reaction mechanism, wherein one end of the denitration reaction mechanism is communicated with a smoke inlet pipe, and the smoke inlet pipe is used for guiding nitrogen-containing smoke into the denitration reaction mechanism;
the flue gas mixing plate is arranged in the denitration reaction mechanism, the sealing baffle is arranged in the flue gas mixing plate, the baffle switching mechanism is arranged on the sealing baffle and used for adjusting the position of the sealing baffle, and the air extraction mechanism is arranged in the sealing baffle.
Through adopting above-mentioned technical scheme, set up denitration reaction mechanism, set up the flue gas mix board on denitration reaction mechanism, to nitrogen-containing flue gas and ammonia intensive mixing, guarantee denitration reaction efficiency, simultaneously through setting up the closure baffle, control denitration reaction mechanism's work to control closure baffle position through baffle switching mechanism, realize denitration system catalyst layer's online change, simplify denitration system and change the step of catalyst layer.
Optionally, the denitration reaction mechanism comprises a reaction main body, wherein one end of the reaction main body is fixedly connected with an inlet flue, and one end of the inlet flue, which is far away from the reaction main body, is communicated with the smoke inlet pipe;
a plurality of reaction chambers are arranged in the reaction main body, one ends of the reaction chambers are communicated with the inlet flue, and one ends of the reaction chambers, which are far away from the inlet flue, are communicated with a smoke outlet pipeline;
and a plurality of catalyst layers are detachably arranged in the reaction chambers, and a plurality of overhaul channels are formed in one sides of the reaction chambers.
Through adopting above-mentioned technical scheme, set up a plurality of reaction chamber to install the catalyst layer in reaction chamber, realize the mixed reaction of nitrogen-containing flue gas and ammonia, accomplish the denitration treatment to nitrogen-containing flue gas, set up the maintenance passageway in reaction chamber one side simultaneously, make things convenient for the staff to get into reaction chamber and change the catalyst layer, realize denitration system catalyst layer's online change.
Optionally, a plurality of the reaction chamber is close to the one end that goes out the tobacco pipe and all installs the flue gas detector, the flue gas detector is used for detecting the flue gas that the reaction chamber is close to one end that goes out the tobacco pipe and contains the nitro content.
Through adopting above-mentioned technical scheme, flue gas detector carries out real-time detection to the gas after the reaction, makes things convenient for the staff in time to know the operating condition of separate bin formula denitration reactor, avoids appearing mixed gas denitration reaction and goes wrong, produces the pollution to the atmosphere.
Optionally, the flue gas mixing plate comprises an air inlet plate, the air inlet plate is fixedly installed on the inner wall of the inlet flue, a plurality of air inlet holes are uniformly formed in the air inlet plate in a penetrating manner, one ends of the air inlet holes are communicated with the flue gas inlet pipe, one ends of the air inlet holes, which are far away from the flue gas inlet pipe, are communicated with a mixing cavity, one ends of the mixing cavity, which are far away from the air inlet holes, are communicated with a plurality of air outlet holes, and one ends of the air outlet holes, which are far away from the mixing cavity, are communicated with a reaction chamber;
the air outlet holes are uniformly and penetratingly formed in the air outlet plate, and the air outlet plate is fixedly arranged in the inlet flue.
Through adopting above-mentioned technical scheme, set up a plurality of inlet ports, guarantee that the nitrogenous flue gas can get into in the mixing cavity with continuous pressure, conveniently carry out intensive mixing with ammonia, simultaneously through seting up the venthole on the air outlet plate, improve mixed gas's flow stability.
Optionally, a plurality of ammonia intake pipes are evenly communicated with the periphery of the mixing cavity, and a plurality of ammonia intake pipes are all used for outputting ammonia into the mixing cavity.
Through adopting above-mentioned technical scheme, set up a plurality of ammonia intake pipes, guarantee the intensive mixing of ammonia and nitrogen-containing flue gas, improve denitration reaction efficiency.
Optionally, the baffle switching mechanism comprises a rotating motor, the rotating motor is fixedly installed in the mixing cavity, a sleeve is fixedly connected to the output end of the rotating motor, a sleeve rod is sleeved in the sleeve in a sliding manner, a first sliding block is connected to one end, far away from the sleeve, of the sleeve rod in a rotating manner, the first sliding block is sleeved on the first guide rail in a sliding manner, and a sealing baffle is fixedly installed at one end, far away from the sleeve rod, of the first sliding block;
one end of the first guide rail is fixedly arranged on a second sliding block, the second sliding block is sleeved on the second guide rail in a sliding manner, and the second guide rail is fixedly arranged in the mixing cavity;
the sleeve rod is sleeved with a reset spring, one end of the reset spring is fixedly connected to the sleeve, and one end of the reset spring, which is far away from the sleeve, is fixedly connected to one end of the sleeve rod, which is close to the first sliding block.
Through adopting above-mentioned technical scheme, set up rotation motor, drive the sleeve through rotation motor and rotate, and then drive the loop bar and take place relative slip in the sleeve, the slip through the loop bar drives first slider and slides in first guide rail, first guide rail of control drives second slider and takes place to slide on the second guide rail when first slider removes, realizes the position adjustment to closing the baffle through the removal of first slider, conveniently switches reserve reaction chamber, and then realizes the online change of denitration system catalyst layer.
Optionally, the air extraction mechanism comprises an air extraction cavity, the air extraction cavity is arranged at one end of the sealing baffle close to the air outlet plate, and one end of the air extraction cavity close to the air outlet plate is communicated with the air outlet hole;
an air extractor is fixedly arranged in the air extraction cavity and is used for sucking the flue gas in the reaction cavity into the air extraction cavity;
the exhaust cavity is characterized in that a plurality of exhaust pipes are uniformly communicated on the periphery of the exhaust cavity, and one ends, far away from the exhaust cavity, of the exhaust pipes are communicated with the mixing cavity.
By adopting the technical scheme, the air extractor withdraws the mixed gas which does not completely react from the reaction chamber to the mixed cavity, and discharges the mixed gas into the reaction chamber again, so that the gas which is not completely denitrated is prevented from being discharged into the atmosphere, and the atmosphere is prevented from being polluted.
Optionally, a coke filter is fixedly installed in the smoke inlet pipe.
Through adopting above-mentioned technical scheme, set up the coke filter, carry out prefilter to the nitrogenous flue gas, avoid the nitrogenous flue gas in impurity too much, lead to the fact the jam to inlet port and venthole, and then influence the reaction efficiency of branch storehouse formula denitration reactor.
Optionally, a controller is further installed in the reaction main body, and the controller is electrically connected with the smoke detector, the rotating motor and the air extractor respectively, and is used for controlling the rotating motor and the air extractor.
Through adopting above-mentioned technical scheme, set up the controller and control rotating electrical machines and air exhauster, realize the intelligent control to the storehouse formula denitration reactor that divides, improve the degree of automation of storehouse formula denitration reactor, save manual work consuming time.
In a second aspect, the present application provides a working method of a bin-division denitration reactor, which adopts the following technical scheme:
the working method of the separate bin type denitration reactor comprises the following working steps:
s1, preparing, namely performing leak detection on the separated bin type denitration reactor, and replacing and confirming a catalyst;
s2, introducing smoke, introducing nitrogen-containing smoke into the smoke mixing plate through the smoke inlet pipe, and simultaneously introducing ammonia into the smoke mixing plate through the ammonia inlet pipe to fully mix the nitrogen-containing smoke and the ammonia;
s3, completing denitration reaction, and enabling the mixed gas to enter a reaction chamber and pass through a catalyst to complete denitration treatment of the flue gas;
s4, replacing the catalyst, wherein the controller controls the baffle switching mechanism and the air exhaust mechanism to work, adjusts the position of the closed baffle to be above the reaction chamber with the catalyst to be replaced, and pumps the mixed flue gas which is not reacted into the flue gas mixing plate again, and meanwhile, replaces the catalyst with the reaction chamber with the catalyst to be replaced.
By adopting the technical scheme, leak detection is carried out on the split bin type denitration reactor, leakage of nitrogen-containing flue gas is avoided, meanwhile, the online replacement of the catalyst layer of the denitration system is realized through the operation of the split bin type denitration reactor, and the step of replacing the catalyst layer of the denitration system is simplified.
In summary, the present application includes at least one of the following beneficial technical effects:
1. setting a denitration reaction mechanism, setting a flue gas mixing plate on the denitration reaction mechanism, fully mixing nitrogen-containing flue gas and ammonia gas, ensuring denitration reaction efficiency, controlling the operation of the denitration reaction mechanism by setting a closed baffle plate, controlling the position of the closed baffle plate by a baffle plate switching mechanism, realizing online replacement of a catalyst layer of a denitration system, and simplifying the step of replacing the catalyst layer of the denitration system;
2. the air extractor extracts the mixed gas which does not completely react from the reaction chamber to the mixed cavity, and discharges the mixed gas into the reaction chamber again, so that the gas which is not completely denitrated is prevented from being discharged into the atmosphere, and the atmosphere is prevented from being polluted;
3. set up the coke filter, carry out prefiltering to the nitrogenous flue gas, avoid the nitrogenous flue gas in impurity too much, lead to the fact the jam to inlet port and venthole, and then influence the reaction efficiency of branch storehouse formula denitration reactor.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present application;
FIG. 2 is a schematic diagram of the internal structure of the denitration reaction mechanism according to the embodiment of the present application;
FIG. 3 is a schematic view of the structure of a flue gas mixing plate according to an embodiment of the present application;
FIG. 4 is a schematic view of a baffle switching mechanism according to an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of a pumping mechanism according to an embodiment of the present application.
Reference numerals illustrate: 1. a denitration reaction mechanism; 11. a reaction body; 12. an inlet flue; 13. a reaction chamber; 14. a smoke outlet pipe; 15. a catalyst layer; 16. a service passage; 17. a smoke detector; 2. a smoke inlet pipe; 21. a coke filter; 3. a flue gas mixing plate; 31. an air inlet plate; 32. an air inlet hole; 33. a mixing cavity; 34. an air outlet hole; 35. an air outlet plate; 36. an ammonia gas inlet pipe; 4. a closing baffle; 5. a baffle switching mechanism; 51. a rotating motor; 52. a sleeve; 53. a loop bar; 54. a first slider; 55. a first guide rail; 56. a second slider; 57. a second guide rail; 58. a return spring; 6. an air extraction mechanism; 61. an air extraction cavity; 62. an air extractor; 63. and an exhaust pipe.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-5.
The embodiment of the application discloses a separate bin type denitration reactor.
Referring to fig. 1 and 2, the separate bin type denitration reactor comprises a smoke inlet pipe 2, a coke filter 21 is arranged in the smoke inlet pipe 2, one end of the smoke inlet pipe 2 is connected with a denitration reaction mechanism 1, a flue gas mixing plate 3 is arranged in the denitration reaction mechanism 1 and the smoke inlet pipe 2, a sealing baffle 4 is arranged in the flue gas mixing plate 3, a baffle switching mechanism 5 is fixedly arranged on the sealing baffle 4, the baffle switching mechanism 5 is arranged in the flue gas mixing plate 3, and an air extraction mechanism 6 is further arranged in the sealing baffle 4. A controller is arranged in the denitration reaction mechanism 1 and is electrically connected with the denitration reaction mechanism 1, the baffle switching mechanism 5 and the air extraction mechanism 6.
During operation of the separate bin type denitration reactor, nitrogen-containing flue gas is led into the denitration reaction mechanism 1 through the smoke inlet pipe 2, the nitrogen-containing flue gas is subjected to preliminary filtration through the coke filter 21 in the leading-in process, then the nitrogen-containing flue gas enters the flue gas mixing plate 3, the nitrogen-containing flue gas and ammonia gas in the flue gas mixing plate 3 are fully mixed, the mixed gas enters the denitration reaction mechanism 1 for reaction denitration, and the gas after denitration is discharged, so that the nitrogen-containing flue gas is prevented from polluting the atmosphere.
Referring to fig. 1 and 2, the denitration reaction mechanism 1 includes an inlet flue 12, one end of the inlet flue 12 is communicated with a smoke inlet pipe 2, one end of the inlet flue 12, which is far away from the smoke inlet pipe 2, is fixedly connected with a reaction main body 11, a plurality of reaction chambers 13 are arranged in the reaction main body 11, one ends of the reaction chambers 13 are communicated with the inlet flue 12, one ends of the reaction chambers 13, which are far away from the inlet flue 12, are all communicated with a smoke outlet pipe 14, the number of the reaction chambers 13 is four, catalyst layers 15 are all detachably arranged in the four reaction chambers 13, overhaul channels 16 are all arranged on one sides of the four reaction chambers 13, smoke detectors 17 are all arranged in one ends, which are close to the smoke outlet pipe 14, of the four reaction chambers 13, and the smoke detectors 17 are used for detecting nitrogen content of mixed gas after reaction and are electrically connected with a controller. One of the four reaction chambers 13 is a spare reaction chamber 13.
When the denitration reaction mechanism 1 works, nitrogen-containing flue gas enters the inlet flue 12 through the smoke inlet pipe 2, the nitrogen-containing flue gas entering the inlet flue 12 enters the reaction chamber 13 after being mixed with ammonia gas, the mixed gas is subjected to denitration reaction after being catalyzed by the catalyst layer 15 in the reaction chamber 13, the mixed gas after denitration is discharged through the smoke outlet pipeline 14, meanwhile, the mixed gas after denitration is detected through the flue gas detector 17, and when the detected mixed gas contains more than a preset value in the amount of nitrate, the flue gas detector 17 sends a signal to the controller. When the catalyst layer 15 needs to be replaced in the reaction chamber 13, the overhaul channel 16 arranged on the reaction chamber 13 of which the catalyst layer 15 needs to be replaced is opened, and a worker enters the reaction chamber 13 through the overhaul channel 16 to replace the catalyst layer 15.
Referring to fig. 2 and 3, the flue gas mixing plate 3 includes an air inlet plate 31, the air inlet plate 31 is fixedly installed on the inner wall of the inlet flue 12, a plurality of evenly distributed air inlet holes 32 are formed in the air inlet plate 31, the air inlet holes 32 are penetratingly arranged on the air inlet plate 31, one end of each air inlet hole 32 is communicated with the flue gas inlet pipe 2, one end of each air inlet hole 32 far away from the flue gas inlet pipe 2 is communicated with the corresponding mixing cavity 33, one end of each mixing cavity 33 far away from the air inlet plate 31 is provided with an air outlet plate 35, a plurality of air outlet holes 34 are evenly formed in the air outlet plate 35, one end of each air outlet hole 34 is communicated with the corresponding mixing cavity 33, one end of each air outlet plate 35 far away from the corresponding mixing cavity 33 is tightly covered on the four reaction cavities 13, a sealing baffle 4 is installed in the corresponding mixing cavity 33, and the sealing baffle 4 is covered on the air outlet holes 34 communicated with the corresponding standby reaction cavities 13. The peripheral sides of the air inlet plate 31 and the air outlet plate 35 are tightly attached to the inner wall of the inlet flue 12. The mixing cavity 33 is communicated with a plurality of evenly distributed ammonia gas inlet pipes 36 at the periphery, the number of the ammonia gas inlet pipes 36 is eight, and the ammonia gas inlet pipes 36 are used for guiding ammonia gas into the mixing cavity 33.
When the flue gas mixing plate 3 works, nitrogen-containing flue gas enters the mixing cavity 33 through the air inlet hole 32, ammonia enters the mixing cavity 33 through the ammonia air inlet pipe 36, the nitrogen-containing flue gas and the ammonia are fully mixed in the mixing cavity 33, and the mixed gas enters the three reaction chambers 13 through the air outlet holes 34 under the action of air pressure.
Referring to fig. 3 and 4, the baffle switching mechanism 5 includes a rotating motor 51, the rotating motor 51 is fixedly installed in the mixing cavity 33, the rotating motor 51 is electrically connected with the controller, a sleeve 52 is fixedly connected to an output end of the rotating motor 51, a sleeve rod 53 is slidably sleeved in the sleeve 52, a return spring 58 is sleeved on the sleeve rod 53, one end of the return spring 58 is fixedly installed on the sleeve 52, one end of the return spring 58, which is far away from the sleeve 52, is fixedly installed on the sleeve rod 53, one end of the sleeve rod 53, which is far away from the sleeve 52, is rotatably connected with a first sliding block 54, the first sliding block 54 is slidably sleeved on a first guiding rail 55, one end, which is far away from the sleeve rod 53, of the first sliding block 54 is fixedly installed with a sealing baffle 4, one side of the sealing baffle 4 is tightly attached to one end, which is far away from the reaction cavity 13, of the first guiding rail 55 is fixedly connected with a second sliding block 56, which is slidably sleeved on the second guiding rail 57, and the second guiding rail 57 is fixedly installed in the mixing cavity 33.
When the controller receives the signal of the smoke detector 17, the baffle switching mechanism 5 starts to work, the controller controls the rotating motor 51 to work, the rotating motor 51 works to drive the sleeve 52 to rotate, the sleeve 52 rotates to drive the sleeve rod 53 to slide relatively in the sleeve 52, the sleeve rod 53 slides to drive the first sliding block 54 to slide on the first guide rail 55, the second sliding block 56 slides on the second guide rail 57, and the first sliding block 54 moves to drive the sealing baffle 4 to move until the sealing baffle 4 moves to the position above the reaction chamber 13 which sends the signal of the smoke detector 17.
Referring to fig. 4 and 5, the air extraction mechanism 6 includes an air extraction cavity 61, the air extraction cavity 61 is opened at one end of the closed baffle 4 close to the air outlet plate 35, an air extractor 62 is fixedly installed in the air extraction cavity 61, the air extractor 62 is electrically connected with the controller, a plurality of evenly distributed exhaust pipes 63 are communicated with the peripheral side of the air extraction cavity 61, the number of the exhaust pipes 63 is four, and one end of the four exhaust pipes 63 far away from the air extraction cavity 61 is communicated with the mixing cavity.
After the baffle switching mechanism 5 is completed, the air extracting mechanism 6 starts to work, the controller controls the air extractor 62 to start to work, the air extractor 62 extracts the mixed gas in the reaction chamber 13 communicated with the air outlet hole 34 covered by the closed baffle 4 back into the air extracting cavity 61, the mixed gas is discharged into the mixed cavity 33 through the air exhaust pipe 63, and the extracted mixed gas enters the other three reaction chambers 13 again to perform denitration reaction.
The implementation principle of the separate bin type denitration reactor in the embodiment of the application is as follows: firstly, nitrogen-containing flue gas enters the denitration reaction mechanism 1 through the smoke inlet pipe 2, then the nitrogen-containing flue gas enters the flue gas mixing plate 3 and is fully mixed with ammonia gas, the mixed gas enters the denitration reaction mechanism 1 to perform reaction denitration, and the gas after denitration is discharged to avoid pollution of the nitrogen-containing flue gas to the atmosphere.
The embodiment of the application discloses a working method of a separate bin type denitration reactor.
Referring to fig. 1 and 2, a working method of a divided-bin denitration reactor comprises the following working steps:
s1, preparing, namely performing leak detection on the separated bin type denitration reactor, and replacing and confirming a catalyst;
s2, introducing flue gas, introducing nitrogen-containing flue gas into the flue gas mixing plate 3 through the flue gas inlet pipe 2, and simultaneously introducing ammonia into the flue gas mixing plate 3 through the ammonia gas inlet pipe 36, so that the nitrogen-containing flue gas and the ammonia gas are fully mixed;
s3, completing denitration reaction, and enabling the mixed gas to enter a reaction chamber 13 and pass through a catalyst to complete denitration treatment of the flue gas;
s4, replacing the catalyst, wherein the controller controls the baffle switching mechanism 5 and the air exhaust mechanism 6 to work, adjusts the position of the sealing baffle 4 to be above the reaction chamber 13 needing to be replaced, and pumps the mixed flue gas which does not finish the reaction into the flue gas mixing plate 3 again, and meanwhile, performs the catalyst replacement work on the reaction chamber 13 needing to be replaced.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (7)
1. A separate bin type denitration reactor is characterized in that: the device comprises a denitration reaction mechanism (1), wherein one end of the denitration reaction mechanism (1) is communicated with a smoke inlet pipe (2), and the smoke inlet pipe (2) is used for guiding nitrogen-containing smoke into the denitration reaction mechanism (1);
a flue gas mixing plate (3) is arranged in the denitration reaction mechanism (1), a sealing baffle (4) is arranged in the flue gas mixing plate (3), a baffle switching mechanism (5) is arranged on the sealing baffle (4), the baffle switching mechanism (5) is used for adjusting the position of the sealing baffle (4), and an air exhaust mechanism (6) is arranged in the sealing baffle (4);
the denitration reaction mechanism (1) comprises a reaction main body (11), wherein one end of the reaction main body (11) is fixedly connected with an inlet flue (12), and one end of the inlet flue (12) far away from the reaction main body (11) is communicated with the smoke inlet pipe (2);
a plurality of reaction chambers (13) are arranged in the reaction main body (11), one ends of the reaction chambers (13) are communicated with the inlet flue (12), and one ends of the reaction chambers (13) far away from the inlet flue (12) are communicated with a smoke outlet pipeline (14);
a catalyst layer (15) is detachably arranged in each of the reaction chambers (13), and one side of each of the reaction chambers (13) is provided with an overhaul channel (16);
the flue gas mixing plate (3) comprises an air inlet plate (31), the air inlet plate (31) is fixedly arranged on the inner wall of the inlet flue (12), a plurality of air inlets (32) are uniformly formed in the air inlet plate (31) in a penetrating mode, one ends of the air inlets (32) are communicated with the flue gas inlet pipe (2), one ends of the air inlets (32) far away from the flue gas inlet pipe (2) are communicated with a mixing cavity (34), one ends of the mixing cavity (32) far away from the air inlets are communicated with a plurality of air outlets (34), and one ends of the air outlets (34) far away from the mixing cavity (33) are communicated with a reaction cavity (13);
the air outlet holes (34) are uniformly and penetratingly formed in the air outlet plate (35), and the air outlet plate (35) is fixedly arranged in the inlet flue (12);
the baffle switching mechanism (5) comprises a rotating motor (51), the rotating motor (51) is fixedly arranged in the mixing cavity (33), a sleeve (52) is fixedly connected to the output end of the rotating motor (51), a sleeve rod (53) is sleeved in the sleeve (52) in a sliding mode, a first sliding block (54) is connected to one end, far away from the sleeve (52), of the sleeve rod (53) in a rotating mode, the first sliding block (54) is sleeved on a first guide rail (55) in a sliding mode, and a sealing baffle (4) is fixedly arranged at one end, far away from the sleeve rod (53), of the first sliding block (54);
one end of the first guide rail (55) is fixedly arranged on a second sliding block (56), the second sliding block (56) is in sliding sleeve connection with a second guide rail (57), and the second guide rail (57) is fixedly arranged in the mixing cavity (33);
the sleeve rod (53) is sleeved with a return spring (58), one end of the return spring (58) is fixedly connected to the sleeve (52), and one end of the return spring (58) away from the sleeve (52) is fixedly connected to one end of the sleeve rod (53) close to the first sliding block (54).
2. The divided-bin denitration reactor according to claim 1, wherein: and a plurality of flue gas detectors (17) are arranged at one ends, close to the flue gas outlet pipelines (14), of the reaction chambers (13), and the flue gas detectors (17) are used for detecting the nitrate content of flue gas at one ends, close to the flue gas outlet pipelines (14), of the reaction chambers (13).
3. The divided-bin denitration reactor according to claim 1, wherein: the periphery of the mixing cavity (33) is uniformly communicated with a plurality of ammonia gas inlet pipes (36), and the ammonia gas inlet pipes (36) are all used for outputting ammonia gas into the mixing cavity (33).
4. The divided-bin denitration reactor according to claim 1, wherein: the air extraction mechanism (6) comprises an air extraction cavity (61), the air extraction cavity (61) is formed at one end of the sealing baffle plate (4) close to the air outlet plate (35), and one end of the air extraction cavity (61) close to the air outlet plate (35) is communicated with the air outlet hole (34);
an air extractor (62) is fixedly arranged in the air extraction cavity (61), and the air extractor (62) is used for sucking the flue gas in the reaction chamber (13) into the air extraction cavity (61);
the periphery of the air extraction cavity (61) is uniformly communicated with a plurality of exhaust pipes (63), and one end, far away from the air extraction cavity (61), of each exhaust pipe (63) is communicated with the mixing cavity (33).
5. The divided-bin denitration reactor according to claim 1, wherein: a coke filter (21) is fixedly arranged in the smoke inlet pipe (2).
6. The divided-bin denitration reactor according to claim 4, wherein: the reaction main body (11) is internally provided with a controller, the controller is respectively and electrically connected with the smoke detector (17), the rotating motor (51) and the air extractor (62), and the controller is used for controlling the rotating motor (51) and the air extractor (62).
7. The method of operating a divided-compartment denitration reactor according to any one of claims 1 to 6, comprising the steps of:
s1, preparing, namely performing leak detection on the separated bin type denitration reactor, and replacing and confirming a catalyst;
s2, introducing flue gas, introducing nitrogen-containing flue gas into the flue gas mixing plate (3) through the flue gas inlet pipe (2), and simultaneously introducing ammonia into the flue gas mixing plate (3) through the ammonia gas inlet pipe (36), so that the nitrogen-containing flue gas and the ammonia gas are fully mixed;
s3, completing denitration reaction, and enabling the mixed gas to enter a reaction chamber (13) and pass through a catalyst to complete denitration treatment of the flue gas;
s4, replacing the catalyst, wherein the controller controls the baffle switching mechanism (5) and the air exhaust mechanism (6) to work, adjusts the position of the closed baffle (4) to be above the reaction chamber (13) in which the catalyst needs to be replaced, and pumps the mixed flue gas which does not complete the reaction into the flue gas mixing plate (3) again, and meanwhile, performs catalyst replacement work on the reaction chamber (13) in which the catalyst needs to be replaced.
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