CN115069088A - Denitration device for comprehensive utilization of biomass gasification gas - Google Patents
Denitration device for comprehensive utilization of biomass gasification gas Download PDFInfo
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- CN115069088A CN115069088A CN202110265374.6A CN202110265374A CN115069088A CN 115069088 A CN115069088 A CN 115069088A CN 202110265374 A CN202110265374 A CN 202110265374A CN 115069088 A CN115069088 A CN 115069088A
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- 239000002028 Biomass Substances 0.000 title claims abstract description 47
- 238000002309 gasification Methods 0.000 title claims abstract description 44
- 239000007789 gas Substances 0.000 claims abstract description 78
- 239000000779 smoke Substances 0.000 claims abstract description 39
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000004202 carbamide Substances 0.000 claims abstract description 35
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000003546 flue gas Substances 0.000 claims abstract description 28
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 22
- 239000007921 spray Substances 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 239000000428 dust Substances 0.000 claims description 18
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 12
- 229910021529 ammonia Inorganic materials 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 49
- 238000002485 combustion reaction Methods 0.000 description 6
- 238000000889 atomisation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
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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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/82—Gas withdrawal means
- C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C5/00—Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
- F23C5/08—Disposition of burners
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- Combustion & Propulsion (AREA)
- Biomedical Technology (AREA)
- General Chemical & Material Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
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Abstract
The invention provides a comprehensive utilization denitration device for biomass gasification gas, which comprises a gas boiler, wherein the top of the right side of the gas boiler is communicated with a smoke exhaust pipe through a smoke exhaust hole, a boiler draught fan is arranged in the smoke exhaust hole, the bottom of the smoke exhaust pipe is communicated with a low-nitrogen circulation mechanism, and the top of the left side of the gas boiler is communicated with a smoke denitration mechanism; the flue gas denitration mechanism comprises a urea solution box, the urea solution box is arranged on the left side of the gas-fired boiler, a conveying pump is arranged at the top of the urea solution box, an inlet of the conveying pump is communicated with the urea solution box, an outlet of the conveying pump is communicated with a spray gun through a guide pipe, the spray gun is arranged inside the gas-fired boiler, and a controller is arranged in the middle of the guide pipe. The invention provides a comprehensive utilization denitration device for biomass gasification gas, which solves the problem that the existing denitration technology is difficult to meet the requirement of environmental protection emission and causes a certain amount of energy waste.
Description
Technical Field
The invention relates to the field of gas denitration, in particular to a comprehensive utilization denitration device for biomass gasification gas.
Background
At present, various biomass gasification gas denitration technologies in operation generally adopt an SNCR + SCR combined denitration mode, the denitration efficiency is difficult to be stabilized in a certain range due to the limitation of temperature, in addition, a reducing agent is generally an ammonia (amine) group as a main component, and particularly, ammonia (or ammonia water) brings certain potential safety hazard in transportation, storage and management! The SCR denitration catalyst has a certain period in use, solid waste can be generated during replacement, the regeneration treatment difficulty is high, and the replacement cost is high.
Reform transform SCR denitrification facility on original gas boiler, because the selection of temperature window, often reform transform boiler afterbody flue gas pressurized element, not only waste time and energy, influence boiler thermal efficiency and safe in utilization simultaneously, current denitration technique generally adopts SNCR + SCR combination denitration mode, owing to receive the influence of various conditions, hardly reaches the purpose of long-term ultralow emission, invests simultaneously also greatly increased thereupon.
Therefore, it is necessary to provide a denitration device for comprehensive utilization of biomass gasification gas to solve the above technical problems.
Disclosure of Invention
The invention provides a comprehensive utilization denitration device for biomass gasification gas, which solves the problem that the existing denitration technology is difficult to meet the requirement of environmental protection emission and causes a certain amount of energy waste.
In order to solve the technical problems, the comprehensive utilization denitration device for biomass gasification gas comprises a gas boiler, wherein the top of the right side of the gas boiler is communicated with a smoke exhaust pipe through a smoke exhaust hole, a boiler induced draft fan is arranged in the smoke exhaust hole, the bottom of the smoke exhaust pipe is communicated with a low-nitrogen circulation mechanism, and the top of the left side of the gas boiler is communicated with a flue gas denitration mechanism; the flue gas denitration mechanism comprises a urea solution box, the urea solution box is arranged on the left side of the gas-fired boiler, a conveying pump is arranged at the top of the urea solution box, the inlet of the conveying pump is communicated with the urea solution box, the outlet of the conveying pump is communicated with a spray gun through a guide pipe, the spray gun is arranged in the gas-fired boiler, a controller is arranged in the middle of the guide pipe, the low-nitrogen circulation mechanism comprises a low-nitrogen circulation fan, the air inlet of the low-nitrogen circulation fan is communicated with a smoke exhaust pipe, the air outlet of the low-nitrogen circulation fan is communicated with a boiler air blower, the air outlet of the boiler air blower is communicated with the gas-fired boiler, the right side of the gas-fired boiler is fixedly connected with a flue gas online analyzer and an ammonia escape detector through a connecting piece, the detection end of the flue gas online analyzer penetrates through the smoke exhaust pipe and extends to the inside of the smoke exhaust pipe, and the flue gas generated in the gas-fired boiler is conveyed to the smoke exhaust pipe through the gas-fired boiler air blower to be discharged, partial flue gas discharged by a draught fan of the gas boiler is pressurized by a low-nitrogen circulating fan and then conveyed to an inlet of an air blower of the gas boiler to be mixed with air and then enters the gas boiler for combustion, urea solution in the urea solution tank is extracted by a conveying pump and sprayed out after being atomized by a spray gun, and the controller can automatically control the addition amount of the urea solution according to a nitrogen oxide concentration signal uploaded by a flue gas analyzer.
Preferably, the left side of the gas boiler is communicated with a burner, the left side of the gas boiler is provided with a biomass gasification furnace, and the right side of the biomass gasification furnace is communicated with a high-temperature cyclone dust collector.
Preferably, the outlet of the high-temperature cyclone dust collector is communicated with a low-temperature cyclone dust collector, the high-temperature cyclone dust collector and the low-temperature cyclone dust collector are both fixed on the surface of the biomass gasification furnace through connecting pieces, the outlet of the low-temperature cyclone dust collector is communicated with a heat exchanger, and the outlet of the heat exchanger is communicated with the combustor.
Preferably, an air preheating fan is arranged on the right side of the biomass gasification furnace, an air outlet of the air preheating fan is communicated with a heat exchange medium inlet of the heat exchanger, and a heat exchange medium outlet of the heat exchanger is communicated with the biomass gasification furnace.
Preferably, the left side of the biomass gasification furnace is communicated with a hopper through an auger conveyor, and the hopper is communicated with a storage bin through a belt conveyor.
Compared with the related art, the comprehensive utilization denitration device for biomass gasification gas provided by the invention has the following beneficial effects:
(1) the invention provides a denitration device for comprehensive utilization of biomass gasification gas, wherein urea solution in a urea solution tank is extracted by a conveying pump and sprayed out after being atomized by a spray gun, the urea solution reacts with nitric oxide in flue gas, so that the nitric oxide in the flue gas is removed, and a controller can automatically control the addition amount of the urea solution according to a nitric oxide concentration signal uploaded by a flue gas analyzer, so that the real-time standard emission of the nitric oxide is realized.
(2) The invention provides a denitration device for comprehensive utilization of biomass gasification gas, wherein flue gas generated in a gas boiler is conveyed to a smoke exhaust pipe through a gas boiler induced draft fan to be exhausted, part of the flue gas exhausted by the gas boiler induced draft fan is pressurized by a low-nitrogen circulating fan and then conveyed to an inlet of a gas boiler blower to be mixed with air, and then enters the gas boiler to be combusted, so that the oxygen content of primary air is reduced, and the strong fluctuation of bed temperature is inhibited, thereby lightening the local violent combustion, optimizing the reduction reaction of nitric oxide and carbon, and obviously reducing the generation amount of nitrogen oxides.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of a denitration device for comprehensive utilization of biomass gasification gas according to the present invention;
fig. 2 is a schematic structural view of the interior of the gas boiler shown in fig. 1.
Reference numbers in the figures: 1. the system comprises a biomass gasification furnace, 2, a high-temperature cyclone dust collector, 3, a low-temperature cyclone dust collector, 4, a heat exchanger, 5, a combustor, 6, a gas boiler, 7, a smoke exhaust pipe, 8, a urea solution box, 9, a conveying pump, 10, a spray gun, 11, a controller, 12, a smoke exhaust hole, 13, a boiler induced draft fan, 14, a low-nitrogen circulating fan, 15, a boiler blower, 16, a smoke online analyzer, 17, an ammonia escape detector, 18, an air preheating fan, 19, an auger conveyor, 20, a hopper, 21 and a belt conveyor.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
Referring to fig. 1-2, fig. 1 is a schematic structural diagram of a preferred embodiment of a denitration device for comprehensive utilization of biomass gasification gas; fig. 2 is a schematic structural view of the interior of the gas boiler shown in fig. 1. A denitration device for comprehensive utilization of biomass gasification gas comprises a gas boiler 6, wherein the top of the right side of the gas boiler 6 is communicated with a smoke exhaust pipe 7 through a smoke exhaust hole 12, a boiler induced draft fan 13 is arranged inside the smoke exhaust hole 12, the bottom of the smoke exhaust pipe 7 is communicated with a low-nitrogen circulation mechanism, and the top of the left side of the gas boiler 6 is communicated with a smoke denitration mechanism; flue gas denitration mechanism includes urea solution case 8, and urea solution case 8 sets up in gas boiler 6's left side, the top of urea solution case 8 is provided with delivery pump 9, and delivery pump 9's import and urea solution case 8 are linked together, delivery pump 9's export has spray gun 10 through the pipe intercommunication, and spray gun 10 sets up in gas boiler 6's inside, the middle part of pipe is provided with controller 11, every gas boiler sets up a distributor box, install glass rotameter in the distributor box, and can adjust the needle valve that every flowmeter below set up and be convenient for distribute urea solution to several spray guns 10 that correspond equally, spray gun 10 evenly distributed, in order to reach the purpose with the abundant homogeneous mixing of flue gas. The spray gun 10 is a two-fluid atomization spray gun, each spray gun is required to be simultaneously provided with a compressed air pipe for providing compressed air required by sufficient atomization of urea solution and cooling air for the spray gun 10, the low-nitrogen circulation mechanism comprises a low-nitrogen circulation fan 14, an air inlet of the low-nitrogen circulation fan is communicated with a smoke exhaust pipe 7, an air outlet of the low-nitrogen circulation fan 14 is communicated with a boiler blower 15, an air outlet of the boiler blower 15 is communicated with a gas boiler 6, the right side of the gas boiler 6 is fixedly connected with a smoke on-line analyzer 16 and an ammonia escape detector 17 through a connecting piece, a detection end of the smoke on-line analyzer 16 penetrates through the smoke exhaust pipe 7 and extends into the smoke exhaust pipe, smoke generated in the gas boiler 6 is conveyed to the smoke exhaust pipe 7 through a gas boiler induced draft fan 13 to be exhausted, part of the smoke exhausted by the gas boiler induced draft fan 13 is pressurized by the low-nitrogen circulation fan 14 and then conveyed to an inlet of the gas boiler blower 15 to be mixed with air and then enter the gas boiler 6 to be combusted, the urea solution extracted by the delivery pump 9 and inside the urea solution tank 8 is sprayed out after being atomized by the spray gun, the urea solution reacts with the nitrogen oxide in the flue gas, so that the nitrogen oxide in the flue gas is removed, and the controller 11 can automatically control the addition amount of the urea solution according to the nitrogen oxide concentration signal uploaded by the flue gas analyzer 16, so that the real-time standard emission of the nitrogen oxide is realized.
The left side of the gas boiler 6 is communicated with a burner 5, the left side of the gas boiler 6 is provided with a biomass gasification furnace 1, the right side of the biomass gasification furnace 1 is communicated with a high-temperature cyclone dust collector 2, the outlet of the high-temperature cyclone dust collector 2 is communicated with a low-temperature cyclone dust collector 3, the high-temperature cyclone dust collector 2 and the low-temperature cyclone dust collector 3 are both fixed on the surface of the biomass gasification furnace 1 through connecting pieces, the outlet of the low-temperature cyclone dust collector 3 is communicated with a heat exchanger 4, and the outlet of the heat exchanger 4 is communicated with the burner 5, the right side of the biomass gasification furnace 1 is provided with an air preheating fan 18, the air outlet of the air preheating fan 18 is communicated with the heat exchange medium inlet of the heat exchanger 4, the heat exchange medium outlet of the heat exchanger 4 is communicated with the biomass gasification furnace 1, the left side of the biomass gasification furnace 1 is communicated with a hopper 20 through an auger conveyor 19, and the hopper 20 is communicated with a storage bin through a belt conveyor 21.
The working principle of the comprehensive utilization denitration device for biomass gasification gas provided by the invention is as follows: biomass raw materials enter a biomass hopper 20 through a belt conveyor 21 and are then conveyed into a biomass gasification furnace 1 through a metering auger conveyor 19 to be gasified to generate biomass gas, the gas is subjected to dust particle separation through a high-temperature cyclone dust collector 2 and a low-temperature cyclone dust collector 3 and then enters an air heat exchanger 4, an air heat exchange fan 9 pressurizes air and inputs the air into the heat exchanger to exchange heat with the high-temperature gas, the air after heat exchange enters the gasification furnace 1 to support combustion, the biomass gas after heat exchange enters a gas boiler 6 through a combustor 5 to be combusted, the flue gas generated by combustion is conveyed to a smoke exhaust pipe 7 through a gas boiler induced draft fan 13 to be exhausted, part of the flue gas exhausted by the gas boiler induced draft fan 13 is pressurized by a low-nitrogen circulating fan 14 and then conveyed to an inlet of a gas boiler blower 15 to be mixed with the air and then enters the gas boiler 6 to be combusted, the urea solution in a urea solution tank 8 is extracted through a conveying pump 9 and sprayed out after atomization through a spray gun, the urea solution reacts with the nitrogen oxide in the flue gas to remove the nitrogen oxide in the flue gas, and the controller 11 can automatically control the addition amount of the urea solution according to the nitrogen oxide concentration signal uploaded by the flue gas analyzer 16, so that the real-time standard-reaching emission of the nitrogen oxide is realized.
Compared with the related art, the comprehensive utilization denitration device for biomass gasification gas provided by the invention has the following beneficial effects:
the gas boiler matched with the technology adopts the combined utilization of the low-nitrogen combustion technology and the low-oxygen circulation technology, can effectively inhibit the generation of nitrogen oxides during the combustion of a hearth, controls the emission value of the nitrogen oxides within the range of not higher than 50mg/Nm3 in the SNCR denitration process mainly configured with a safe reducing agent urea solution, and meets the ultra-low emission standard value of the nitrogen oxides in the flue gas of the gas boiler.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. The denitration device for comprehensive utilization of biomass gasification gas is characterized by comprising a gas boiler (6), wherein the top of the right side of the gas boiler (6) is communicated with a smoke exhaust pipe (7) through a smoke exhaust hole (12), a boiler induced draft fan (13) is arranged inside the smoke exhaust hole (12), the bottom of the smoke exhaust pipe (7) is communicated with a low-nitrogen circulation mechanism, and the top of the left side of the gas boiler (6) is communicated with a smoke denitration mechanism; flue gas denitration mechanism includes urea solution case (8) to urea solution case (8) set up in the left side of gas boiler (6), the top of urea solution case (8) is provided with delivery pump (9) to the import and urea solution case (8) of delivery pump (9) are linked together, the export of delivery pump (9) has spray gun (10) through the pipe intercommunication, and spray gun (10) set up in the inside of gas boiler (6), the middle part of pipe is provided with controller (11).
2. The denitration device for comprehensive utilization of biomass gasification gas according to claim 1, wherein the low-nitrogen circulation mechanism comprises a low-nitrogen circulation fan (14), an air inlet of the low-nitrogen circulation fan is communicated with the smoke exhaust pipe (7), an air outlet of the low-nitrogen circulation fan (14) is communicated with a boiler blower (15), an air outlet of the boiler blower (15) is communicated with the gas boiler (6), the right side of the gas boiler (6) is fixedly connected with a flue gas online analyzer (16) and an ammonia escape detector (17) through a connecting piece, and a detection end of the flue gas online analyzer (16) penetrates through the smoke exhaust pipe (7) and extends into the smoke exhaust pipe.
3. The denitration device for comprehensive utilization of biomass gasification gas according to claim 1, wherein a combustor (5) is communicated with the left side of the gas boiler (6), a biomass gasification furnace (1) is arranged on the left side of the gas boiler (6), and a high-temperature cyclone dust collector (2) is communicated with the right side of the biomass gasification furnace (1).
4. The denitration device for comprehensive utilization of biomass gasification gas according to claim 3, wherein an outlet of the high-temperature cyclone (2) is communicated with the low-temperature cyclone (3), the high-temperature cyclone (2) and the low-temperature cyclone (3) are both fixed on the surface of the biomass gasification furnace (1) through a connecting piece, an outlet of the low-temperature cyclone (3) is communicated with the heat exchanger (4), and an outlet of the heat exchanger (4) is communicated with the burner (5).
5. The comprehensive utilization denitration device for the biomass gasification gas according to claim 4, wherein an air preheating fan (18) is arranged on the right side of the biomass gasification furnace (1), an air outlet of the air preheating fan (18) is communicated with a heat exchange medium inlet of the heat exchanger (4), and a heat exchange medium outlet of the heat exchanger (4) is communicated with the biomass gasification furnace (1).
6. The denitration device for comprehensive utilization of biomass gasification gas according to claim 1, wherein the left side of the biomass gasification furnace (1) is communicated with a hopper (20) through an auger conveyor (19), and the hopper (20) is communicated with a storage bin through a belt conveyor (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110265374.6A CN115069088A (en) | 2021-03-11 | 2021-03-11 | Denitration device for comprehensive utilization of biomass gasification gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110265374.6A CN115069088A (en) | 2021-03-11 | 2021-03-11 | Denitration device for comprehensive utilization of biomass gasification gas |
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| CN115069088A true CN115069088A (en) | 2022-09-20 |
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| CN202110265374.6A Withdrawn CN115069088A (en) | 2021-03-11 | 2021-03-11 | Denitration device for comprehensive utilization of biomass gasification gas |
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Application publication date: 20220920 |
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