CN116617853A - Denitration ammonia production device - Google Patents
Denitration ammonia production device Download PDFInfo
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- CN116617853A CN116617853A CN202310597690.2A CN202310597690A CN116617853A CN 116617853 A CN116617853 A CN 116617853A CN 202310597690 A CN202310597690 A CN 202310597690A CN 116617853 A CN116617853 A CN 116617853A
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- China
- Prior art keywords
- reducing agent
- bin
- denitration
- flue
- smoke
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 179
- 239000000779 smoke Substances 0.000 claims abstract description 56
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000003546 flue gas Substances 0.000 claims abstract description 40
- 238000005507 spraying Methods 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 48
- 239000007921 spray Substances 0.000 claims description 28
- 238000003860 storage Methods 0.000 claims description 23
- 239000007789 gas Substances 0.000 claims description 22
- 238000007599 discharging Methods 0.000 claims description 19
- 238000004891 communication Methods 0.000 description 10
- 238000000197 pyrolysis Methods 0.000 description 7
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000000428 dust Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- BVCZEBOGSOYJJT-UHFFFAOYSA-N ammonium carbamate Chemical compound [NH4+].NC([O-])=O BVCZEBOGSOYJJT-UHFFFAOYSA-N 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Classifications
-
- 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
- B01D53/90—Injecting reactants
-
- 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
- B01D53/343—Heat recovery
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/08—Preparation of ammonia from nitrogenous organic substances
- C01C1/086—Preparation of ammonia from nitrogenous organic substances from urea
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/04—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- 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
-
- 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
- B01D2251/2067—Urea
-
- 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
-
- 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 application discloses a denitration ammonia production device, which comprises: the flue comprises a first smoke inlet and a first smoke outlet, the first smoke inlet is suitable for being communicated with a boiler furnace so that smoke in the boiler furnace enters the flue, the flue further comprises a reducing agent nozzle, and the reducing agent nozzle is suitable for spraying reducing agent into the flue so that the reducing agent is mixed with high-temperature smoke and pyrolyzed; the denitration device comprises a second smoke inlet which is communicated with the first smoke outlet, and the denitration device can perform denitration treatment on high-temperature smoke mixed with a reducing agent. The denitration ammonia production device has higher energy utilization rate and lower flue gas denitration cost.
Description
Technical Field
The application relates to the technical field of denitration equipment, in particular to a denitration ammonia production device.
Background
The SNCR and SCR technology of coal-fired power plants are basically the same as the principle of realizing flue gas denitration, and are all carried out by selectively reacting with nitrogen oxides (mainly NO and NO 2) in flue gas under the condition of reducing atmosphere by using a denitration agent, so that harmless N2 and H2O are finally generated. In the related art, hydrolysis is required before the reducing agent is sprayed into the flue, and then the pyrolyzed reducing agent is pyrolyzed by using a pyrolysis device. Therefore, the reducing agent consumes a large amount of energy during pyrolysis, resulting in high denitration costs.
Disclosure of Invention
The present application aims to solve at least one of the technical problems in the related art to some extent.
Therefore, the embodiment of the application provides the denitration ammonia production device which has higher energy utilization rate and lower flue gas denitration cost.
The denitration ammonia production device according to the embodiment of the application comprises: the flue comprises a first smoke inlet and a first smoke outlet, the first smoke inlet is suitable for being communicated with a boiler furnace so that smoke in the boiler furnace enters the flue, the flue further comprises a reducing agent nozzle, and the reducing agent nozzle is suitable for spraying reducing agent into the flue so that the reducing agent is mixed with high-temperature smoke and pyrolyzed; the denitration device comprises a second smoke inlet, the second smoke inlet is communicated with the first smoke outlet, and the denitration device can perform denitration treatment on high-temperature smoke mixed with a reducing agent.
According to the denitration ammonia production device provided by the embodiment of the application, the reducing agent nozzle is arranged on the flue, and the reducing agent is sprayed into the flue through the reducing agent nozzle, so that the reducing agent exchanges heat with high-temperature flue gas in the flue and is pyrolyzed before entering the denitration device. Therefore, the heat of the high-temperature flue gas is used for replacing pyrolysis equipment to pyrolyze the reducing agent, so that the energy utilization rate is improved, the energy consumption in the flue gas denitration process is reduced, and the flue gas denitration cost is reduced.
Therefore, the denitration ammonia production device provided by the embodiment of the application has higher energy utilization rate and lower flue gas denitration cost.
In some embodiments, the denitration ammonia production device further comprises: the reducing agent conveying channel comprises a first feeding port and a first discharging port, the first feeding port is suitable for feeding reducing agent, and the first discharging port is communicated with the reducing agent nozzle; the denitration device further comprises a second smoke outlet, the reducing agent conveying channel further comprises a first air inlet, and the first air inlet is communicated with the second smoke outlet, so that flue gas exhausted by the denitration device preheats the reducing agent in the reducing agent conveying channel.
In some embodiments, the denitration ammonia production device further comprises: the reducing agent spray pipe comprises a spraying part, a plurality of reducing agent spray nozzles are arranged on the spraying part, and the reducing agent spray nozzles are communicated with the first discharge holes.
In some embodiments, the reducing agent spraying pipe comprises a plurality of branch spraying pipes and a communicating main pipe, the plurality of branch spraying pipes are spaced apart in a first horizontal direction, a plurality of reducing agent spraying ports are formed in each branch spraying pipe, the plurality of reducing agent spraying ports are spaced apart in the extending direction of the branch spraying pipes, the plurality of branch spraying pipes are communicated with the communicating main pipe, the communicating main pipe comprises a second feeding port, and the second feeding port is communicated with the first discharging port.
In some embodiments, the denitration ammonia production device further comprises: the demineralized water spray pipe, the demineralized water spray pipe wears to locate in the flue, a part of demineralized water spray pipe is established in the flue, be equipped with a plurality of demineralized water spouts on a part of demineralized water spray pipe, every the direction of opening of demineralized water spout all with the direction of opening of reductant spout is relative, be equipped with the water inlet on another part of demineralized water spray pipe, the water inlet with a plurality of demineralized water spouts the intercommunication, just the water inlet communicates with the external world.
In some embodiments, the denitration ammonia production device further comprises: the reducing agent bin, the second discharge gate has been seted up to the lower extreme of reducing agent bin, the second discharge gate with first feed inlet intercommunication, so that the reducing agent in the reducing agent bin gets into in the reducing agent conveying channel.
In some embodiments, the reductant storage bin further comprises: the first bin and the second bin are opposite in the up-down direction, the first bin is located below the second bin, the first bin comprises a third feeding hole and a second discharging hole, the second discharging hole is located at the lower end of the first bin, a fourth discharging hole is formed in the lower end of the second bin, and the third feeding hole is communicated with the fourth discharging hole; and the discharge valve is arranged on the fourth discharge hole.
In some embodiments, the reductant storage bin further comprises: the constant pressure pipe, the constant pressure pipe includes main pipe section, first minute pipe section and second minute pipe section, the one end of first minute pipe section with first feed bin intercommunication, the other end of first minute pipe section with be responsible for the pipe section intercommunication, the one end of second minute pipe section with the second feed bin intercommunication, the other end of second minute pipe section with be responsible for the pipe section intercommunication, be responsible for the pipe section with reductant conveying channel intercommunication, so that pressure in the first feed bin with pressure balance in the second feed bin.
In some embodiments, the reductant storage bin further comprises: the first dehumidifier is arranged on the first branch pipe section, and the second dehumidifier is arranged on the second branch pipe section.
In some embodiments, the reductant storage bin further comprises: the pulse gas generating device comprises a gas outlet, a second gas inlet is further formed in the lower end of the first bin, and the second gas inlet is communicated with the gas outlet, so that pulse gas generated by the pulse gas generating device impacts reducing agents accumulated in the first bin.
Drawings
Fig. 1 is a schematic structural view of a denitration ammonia production device according to an embodiment of the present application.
Reference numerals:
a denitration ammonia production device 100;
a flue 1; a first smoke inlet 11; a first smoke outlet 12; a reducing agent nozzle 13; a branched nozzle 131; reductant nozzle 1311; a demineralized water nozzle 14; a desalted water spout 141; a water inlet 142;
a denitration device 2; a second smoke inlet 21; a second smoke outlet 22;
a reducing agent delivery passage 3; a first feed port 31; a first outlet 32; a first air inlet 33;
a reducing agent bin 4; a first silo 41; a third feed port 411; a second outlet 412; a second air inlet 413; a second silo 42; a fourth discharge port 421; a constant pressure pipe 43; a main pipe section 431; a first segment 432; a second section 433; a first dehumidifier 44; a second dehumidifier 45;
a smoke outlet channel 5; a third smoke inlet 51; a third smoke outlet 52; a dust removing device 6.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present application and should not be construed as limiting the application.
The following describes a denitration ammonia production device 100 according to an embodiment of the present application with reference to the drawings.
As shown in fig. 1, a denitration ammonia production device 100 according to an embodiment of the present application includes a flue 1 and a denitration device 2.
The flue 1 comprises a first smoke inlet 11 and a first smoke outlet 12, the first smoke inlet 11 is suitable for being communicated with a boiler furnace so that flue gas in the boiler furnace enters the flue 1, the flue 1 further comprises a reducing agent nozzle 1311, and the reducing agent nozzle 1311 is suitable for spraying reducing agent into the flue 1 so that the reducing agent is mixed with high-temperature flue gas and pyrolyzed. The denitrification device 2 comprises a second smoke inlet 21, the second smoke inlet 21 is communicated with the first smoke outlet 12, and the denitrification device 2 can perform denitrification treatment on high-temperature smoke mixed with a reducing agent.
The following describes the specific implementation of the ammonia removal device 100 according to the embodiment of the present application with reference to the drawings.
The first smoke inlet 11 of the flue 1 is communicated with the hearth, and high-temperature smoke in the hearth enters the flue 1 through the first smoke inlet 11. After the high-temperature flue gas enters the flue 1, a reducing agent, for example, ammonium carbamate, is sprayed into the flue 1 through a reducing agent nozzle 1311, and the reducing agent and the high-temperature flue gas in the flue 1 are subjected to heat exchange to pyrolyze the reducing agent, so that the pyrolyzed reducing agent is obtained. The pyrolyzed reducing agent and the high-temperature flue gas are mixed and discharged out of the flue 1 through the first flue outlet 12 and enter the denitration device 2 through the second flue inlet 21. In the denitration device 2, the pyrolyzed reducing agent reacts with the high-temperature flue gas and the catalyst in the denitration device 2, so that the high-temperature flue gas is subjected to denitration treatment. And the high-temperature flue gas after denitration treatment is discharged from the denitration device 2.
Compared with the related art, the denitration ammonia device 100 of the embodiment of the application has the advantages that the reducing agent nozzle 1311 is arranged on the flue 1, and the reducing agent is sprayed into the flue 1 through the reducing agent nozzle 1311, so that the reducing agent exchanges heat with the high-temperature flue gas in the flue 1 and is pyrolyzed before entering the denitration device 2. Therefore, the heat of the high-temperature flue gas is used for replacing pyrolysis equipment to pyrolyze the reducing agent, so that the energy utilization rate is improved, the energy consumption in the flue gas denitration process is reduced, and the flue gas denitration cost is reduced.
Therefore, the denitration ammonia production device 100 provided by the embodiment of the application has higher energy utilization rate and lower flue gas denitration cost.
In order that the present application can be more easily understood, the denitration ammonia production device 100 according to the embodiment of the present application will be further described below by taking the case that the first horizontal direction coincides with the left-right direction. Wherein the first direction is perpendicular to the up-down direction.
As shown in fig. 1, a denitration ammonia production device 100 according to an embodiment of the present application includes a flue 1, a denitration device 2, a reducing agent delivery passage 3, a reducing agent nozzle 13, a demineralized water nozzle 14, a reducing agent silo 4, a smoke outlet passage 5, and a blower.
In some embodiments, as shown in fig. 1, the reductant delivery passage 3 includes a first inlet port 31 and a first outlet port 32, the first inlet port 31 adapted to pass reductant, and the first outlet port 32 in communication with the reductant nozzle 1311. The denitrification device 2 further comprises a second outlet 22, the reductant delivery channel 3 further comprises a first inlet 33, the first inlet 33 being in communication with the second outlet 22, such that flue gas exiting the denitrification device 2 heats the reductant in the reductant delivery channel 3.
The high-temperature flue gas is discharged out of the denitration device 2 through the second smoke outlet 22 after denitration treatment of the denitration device 2, and the high-temperature flue gas discharged out of the denitration device 2 enters the reducing agent conveying channel 3 through the first air inlet 33. The reducing agent enters the reducing agent conveying channel 3 through the first feeding hole 31, and the high-temperature flue gas in the reducing agent conveying channel 3 carries the reducing agent to be discharged from the first discharging hole 32 and is sprayed into the flue 1 through the reducing agent nozzle 1311. In other words, the reducing agent is transported to the reducing agent jet 1311 through the reducing agent transport passage 3 by using the high temperature flue gas after denitration, and the reducing agent is injected into the flue 1 through the reducing agent jet 1311. On the one hand, the high-temperature flue gas has enough heat to preheat the reducing agent in the process of transporting the reducing agent; on the other hand, the high-temperature flue gas after denitration is used for transporting the reducing agent instead of using additional feeding equipment, so that the energy consumption in the flue gas denitration process is further reduced, the energy utilization rate is improved, and the flue gas denitration cost is reduced.
In some embodiments, as shown in FIG. 1, the reductant nozzle 13 includes a spray portion having a plurality of reductant nozzles 1311 disposed thereon, the plurality of reductant nozzles 1311 each communicating with the first outlet 32. In other words, by providing the plurality of reducing agent nozzles 1311 on the reducing agent nozzle 13, the reducing agent can be more uniformly dispersed in the flue 1, and the reducing agent can exchange heat with the high-temperature flue gas in the flue 1, so that the pyrolysis effect of the reducing agent is better.
Specifically, the reducing agent nozzle 13 includes a plurality of branch nozzles 131 and a communicating main pipe, the branch nozzles 131 are plural, the plurality of branch nozzles 131 are spaced apart in the first direction, and each branch nozzle 131 is provided with a plurality of reducing agent nozzles 1311. The plurality of reducing agent nozzles 1311 are spaced apart in the extending direction of the branch nozzles 131, and the plurality of branch nozzles 131 are each in communication with a communication main including a second feed port which communicates with the first discharge port 32. In other words, by providing a plurality of reducing agent jets 1311 on the branch lance 131, the plurality of branch lances 131 are evenly spaced in the flue 1. Therefore, the reducing agent sprayed by the reducing agent spray pipe 13 can be more uniformly dispersed in the flue 1, so that the reducing agent can exchange heat with high-temperature flue gas in the flue 1 better, and the pyrolysis effect of the reducing agent is better.
In some embodiments, as shown in fig. 1, the demineralized water spray pipe 14 is disposed through the flue 1, a portion of the demineralized water spray pipe 14 is disposed in the flue 1, and a plurality of demineralized water spray ports 141 are disposed on a portion of the demineralized water spray pipe 14, and an opening direction of each demineralized water spray port 141 is opposite to an opening direction of the reducing agent spray port 1311. The other part of the demineralized water spray pipe 14 is provided with a water inlet 142, the water inlet 142 is communicated with a plurality of demineralized water sprays, and the water inlet 142 is communicated with the outside, that is, the other part of the demineralized water spray pipe 14 extends out of the flue 1 so as to be communicated with the outside water source.
Demineralized water can be injected into the flue 1 by using the demineralized water injection pipe 14, and the opening direction of the demineralized water injection port 141 on the demineralized water injection pipe 14 is opposite to the opening direction of the reducing agent injection port 1311, so that the demineralized water injected into the flue 1 through the demineralized water injection port 141 is fully contacted with the reducing agent injected into the flue 1 through the reducing agent injection port 1311. It will be appreciated that certain reducing agents, such as urea, need to be pyrolyzed with the aid of water into ammonia and carbon dioxide to de-nitrate the flue gas. By arranging the desalted water spray pipe 14 on the flue 1, the denitration ammonia preparation device 100 of the embodiment of the application can be matched with a reducing agent which needs water to participate in pyrolysis to perform denitration treatment on the flue gas, so that the practicability of the denitration ammonia preparation device 100 of the embodiment of the application is further improved.
In some embodiments, as shown in fig. 1, a second outlet 412 is provided at the lower end of the reducing agent tank 4, and the second outlet 412 is in communication with the first inlet 31, so that the reducing agent in the reducing agent tank 4 enters the reducing agent delivery channel 3. In other words, the reducing agent is contained in the reducing agent tank 4, and the reducing agent in the reducing agent tank 4 can be discharged through the second discharge port 412 and enter the reducing agent delivery passage 3 through the first feed port 31 so that the reducing agent enters the flue 1 through the reducing agent delivery passage 3. Therefore, the reducing agent bin 4 is used for storing the reducing agent, and the reducing agent is convenient to continuously convey into the flue 1, so that the practicability of the denitration ammonia production device 100 is improved.
Specifically, the reducing agent storage bin 4 further includes a first storage bin 41 and a second storage bin 42, the first storage bin 41 and the second storage bin 42 are opposite in the up-down direction, the first storage bin 41 is located below the second storage bin 42, the first storage bin 41 further includes a third feeding hole 411, a fourth discharging hole 421 is arranged at the lower end of the second storage bin 42, and the third feeding hole 411 is communicated with the fourth discharging hole 421. And a discharge valve, which is arranged on the fourth discharge hole 421. In other words, the reducing agent tank 4 has a first tank 41 and a second tank 42 that are opposite in the up-down direction, so that when the reducing agent is externally added to the reducing agent tank 4, the reducing agent first enters the second tank 42 and then is discharged from the second tank 42 through the fourth discharge port 421. The reducing agent exiting the second silo 42 falls through the third feed port 411 into the first silo 41. When it is desired to feed the reducing agent to the reducing agent delivery passage 3, the reducing agent is discharged from the second outlet 412 from the first silo 41 into the reducing agent delivery passage 3.
The connection and disconnection of the first bin 41 and the second bin 42 are controlled by the discharge valve, so that the feeding and discharging of the second bin 42 does not affect the feeding and discharging of the first bin 41. For example, when the first silo 41 is delivering the reducing agent to the reducing agent delivery channel 3, the discharge valve is closed and the reducing agent is added to the second silo 42, the process of adding the reducing agent to the second silo 42 at this time does not affect the delivery of the reducing agent to the reducing agent delivery channel 3 by the first silo 41. Thereby further improving the utility of the reductant silo 4.
In some embodiments, as shown in fig. 1, the reducing agent storage bin 4 further includes a constant pressure pipe 43, the constant pressure pipe 43 includes a main pipe section 431, a first branch pipe section 432, and a second branch pipe section 433, one end of the first branch pipe section 432 is communicated with the first storage bin 41, the other end of the first branch pipe section 432 is communicated with the main pipe section 431, one end of the second branch pipe section 433 is communicated with the second storage bin 42, the other end of the second branch pipe section 433 is communicated with the main pipe section 431, and the main pipe section 431 is communicated with the reducing agent delivery channel 3 to balance the pressure in the first storage bin 41 and the pressure in the second storage bin 42. So that the first and second silos 41 and 42 are in balance with the pressure in the reducing agent delivery channel 3, and smooth feeding of the reducing agent delivery channel 3 by the first and second silos 41 and 42 is ensured.
In some embodiments, as shown in fig. 1, the reductant storage bin 4 further includes a first dehumidifier 44 and a second dehumidifier 45, the first dehumidifier 44 being disposed on the first section 432 and the second dehumidifier 45 being disposed on the second section 433. Thereby ensuring that the anhydrous vapor in the first bin 41 and the second bin 42 enters, avoiding the caking of the first bin 41 and the second bin 42, and enabling the first bin 41 and the second bin 42 to smoothly feed the reducing agent conveying channel 3.
In some embodiments, as shown in fig. 1, the reducing agent tank 4 further includes a pulse gas generating device, the pulse gas generating device includes a gas outlet, a second gas inlet 413 is further provided at the lower end of the first tank 41, and the second gas inlet 413 is in communication with the gas outlet, so that the pulse gas generated by the pulse gas generating device impacts the reducing agent accumulated in the first tank 41. Compressed air after water removal is sprayed into the first storage bin 41 through the air outlet by using the pulse air generating device, so that the problem of unsmooth feeding caused by agglomeration or bridging of reducing agent particles in the first storage bin 41 is avoided.
In some embodiments, the smoke outlet channel 5 comprises a third smoke inlet 51 and a third smoke outlet 52, the third smoke inlet 51 being connected to the second smoke outlet 22, the third smoke outlet 52 being in communication with the first air inlet 33 such that the second smoke outlet 22 is in communication with the first air inlet 33. The flue gas outlet channel 5 is provided with a dust removing device 6 so as to remove dust from the flue gas after denitration discharged by the denitration device 2, thereby preventing fine particles in the flue gas from entering the reducing agent conveying channel 3 and the reducing agent storage bin 4.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.
Claims (10)
1. A denitration ammonia production device, comprising:
the flue comprises a first smoke inlet and a first smoke outlet, the first smoke inlet is suitable for being communicated with a boiler furnace so that smoke in the boiler furnace enters the flue, the flue further comprises a reducing agent nozzle, and the reducing agent nozzle is suitable for spraying reducing agent into the flue so that the reducing agent is mixed with high-temperature smoke and pyrolyzed;
the denitration device comprises a second smoke inlet, the second smoke inlet is communicated with the first smoke outlet, and the denitration device can perform denitration treatment on high-temperature smoke mixed with a reducing agent.
2. The ammonia plant for denitration according to claim 1, further comprising: the reducing agent conveying channel comprises a first feeding port and a first discharging port, the first feeding port is suitable for feeding reducing agent, and the first discharging port is communicated with the reducing agent nozzle;
the denitration device further comprises a second smoke outlet, the reducing agent conveying channel further comprises a first air inlet, and the first air inlet is communicated with the second smoke outlet, so that flue gas exhausted by the denitration device preheats the reducing agent in the reducing agent conveying channel.
3. The ammonia plant for denitration according to claim 2, further comprising: the reducing agent spray pipe comprises a spraying part, a plurality of reducing agent spray nozzles are arranged on the spraying part, and the reducing agent spray nozzles are communicated with the first discharge holes.
4. The ammonia plant of claim 3, wherein the reducing agent nozzle comprises a plurality of branched nozzles and a communicating main pipe, the branched nozzles are spaced apart in a first horizontal direction, each branched nozzle is provided with a plurality of reducing agent nozzles, the reducing agent nozzles are spaced apart in an extending direction of the branched nozzle, the branched nozzles are communicated with the communicating main pipe, the communicating main pipe comprises a second feeding port, and the second feeding port is communicated with the first discharging port.
5. The ammonia plant for denitration according to claim 1, further comprising: the demineralized water spray pipe, the demineralized water spray pipe wears to locate in the flue, a part of demineralized water spray pipe is established in the flue, be equipped with a plurality of demineralized water spouts on a part of demineralized water spray pipe, every the direction of opening of demineralized water spout all with the direction of opening of reductant spout is relative, be equipped with the water inlet on another part of demineralized water spray pipe, the water inlet with a plurality of demineralized water spouts the intercommunication, just the water inlet communicates with the external world.
6. The ammonia plant for denitration according to claim 2, further comprising: the reducing agent bin, the second discharge gate has been seted up to the lower extreme of reducing agent bin, the second discharge gate with first feed inlet intercommunication, so that the reducing agent in the reducing agent bin gets into in the reducing agent conveying channel.
7. The ammonia plant of claim 6, wherein the reductant silo further comprises: the first bin and the second bin are opposite in the up-down direction, the first bin is located below the second bin, the first bin comprises a third feeding hole and a second discharging hole, the second discharging hole is located at the lower end of the first bin, a fourth discharging hole is formed in the lower end of the second bin, and the third feeding hole is communicated with the fourth discharging hole;
and the discharge valve is arranged on the fourth discharge hole.
8. The ammonia plant of claim 7, wherein the reductant silo further comprises: the constant pressure pipe, the constant pressure pipe includes main pipe section, first minute pipe section and second minute pipe section, the one end of first minute pipe section with first feed bin intercommunication, the other end of first minute pipe section with be responsible for the pipe section intercommunication, the one end of second minute pipe section with the second feed bin intercommunication, the other end of second minute pipe section with be responsible for the pipe section intercommunication, be responsible for the pipe section with reductant conveying channel intercommunication, so that pressure in the first feed bin with pressure balance in the second feed bin.
9. The denitration ammonia plant of claim 8, wherein the reductant storage bin further comprises: the first dehumidifier is arranged on the first branch pipe section, and the second dehumidifier is arranged on the second branch pipe section.
10. The ammonia plant of claim 7, wherein the reductant silo further comprises: the pulse gas generating device comprises a gas outlet, a second gas inlet is further formed in the lower end of the first bin, and the second gas inlet is communicated with the gas outlet, so that pulse gas generated by the pulse gas generating device impacts reducing agents accumulated in the first bin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310597690.2A CN116617853A (en) | 2023-05-24 | 2023-05-24 | Denitration ammonia production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310597690.2A CN116617853A (en) | 2023-05-24 | 2023-05-24 | Denitration ammonia production device |
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| Publication Number | Publication Date |
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| CN116617853A true CN116617853A (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310597690.2A Pending CN116617853A (en) | 2023-05-24 | 2023-05-24 | Denitration ammonia production device |
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| Country | Link |
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| CN (1) | CN116617853A (en) |
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2023
- 2023-05-24 CN CN202310597690.2A patent/CN116617853A/en active Pending
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