CN213977544U - Direct-fired power generation system based on biomass pyrolysis charcoal making - Google Patents
Direct-fired power generation system based on biomass pyrolysis charcoal making Download PDFInfo
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- CN213977544U CN213977544U CN202022797744.4U CN202022797744U CN213977544U CN 213977544 U CN213977544 U CN 213977544U CN 202022797744 U CN202022797744 U CN 202022797744U CN 213977544 U CN213977544 U CN 213977544U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model discloses a direct combustion power generation system based on living beings pyrolysis system charcoal relates to the technical field of living beings pyrolysis system charcoal, including rotary drum formula drying furnace, pyrolysis oven, pyrolysis gas draught fan, living beings/coal direct combustion boiler, steam turbine power generation facility, high temperature flue gas air-blower. The biomass pyrolysis charcoal making system can convert various agricultural and forestry wastes into biochar, simultaneously generates a large amount of pyrolysis gas, the pyrolysis gas is rich in combustible components such as H2, CO and macromolecular organic matters, and the like, is used as gas fuel, is introduced into a direct-fired boiler for incineration, and can play a role in improving the combustion efficiency. Meanwhile, the main components of the pyrolysis gas are reducing gas which is a nitrogen oxide reducing agent, and the purpose of reducing the emission of nitrogen oxide can be achieved by burning the reducing gas in a direct-fired boiler. The method produces carbon powder (or carbon block) by pyrolyzing and carbonizing various forestry wastes and the like, and simultaneously introduces the residual pyrolysis gas into a direct-fired boiler for incineration for power generation.
Description
Technical Field
The utility model relates to a technical field of living beings pyrolysis system charcoal, more specifically say, it relates to a direct combustion power generation system based on living beings pyrolysis system charcoal.
Background
At present, a large number of biomass direct-fired power plants exist in China, and a large number of woody biomass exists in agriculture and forestry materials collected every year by the biomass direct-fired power plants, and the woody biomass is an ideal raw material of biochar, is directly combusted as a fuel of a direct-fired boiler and is a large waste of resources.
Based on this, a biomass pyrolysis charcoal making system which reasonably opens or utilizes agricultural and forestry wastes is needed.
SUMMERY OF THE UTILITY MODEL
To this problem in the in-service use, the utility model aims to provide a direct combustion power generation system based on living beings pyrolysis system charcoal, concrete scheme is as follows:
a direct-fired power generation system based on biomass pyrolysis charcoal making comprises a rotary drum type drying furnace, a pyrolysis furnace, a spiral cooling conveyer, a biochar lifting spray machine, a shutter filter, a pyrolysis gas draught fan, a biomass/coal direct-fired boiler, a steam turbine power generation device, a high-temperature flue gas blower and a chimney, wherein a discharge port of the rotary drum type drying furnace is connected with a feed inlet of the pyrolysis furnace, a discharge port of the pyrolysis furnace is connected with a feed inlet of the spiral cooling conveyer, a discharge port of the spiral cooling conveyer is connected with a feed inlet of the biochar lifting spray machine, a gas outlet of the pyrolysis furnace is connected with a gas inlet of the shutter filter, a gas outlet of the shutter filter is connected with a gas inlet of the pyrolysis gas draught fan, a gas outlet of the pyrolysis gas draught fan is connected with a gas inlet of the biomass/coal direct-fired boiler, biomass/coal direct combustion boiler with steam turbine power generation equipment connects in order to drive steam turbine power generation equipment passes through electric power output to electric wire netting, just biomass/coal direct combustion boiler's low temperature exhanst gas outlet with rotary drum formula drying furnace reaches the chimney is connected, biomass/coal direct combustion boiler's high temperature exhanst gas outlet is connected with the air inlet of high temperature flue gas air-blower, the gas outlet of high temperature flue gas air-blower with the air inlet of pyrolysis oven is connected, just high temperature flue gas air-blower with be equipped with the air guide valve between the biomass/coal direct combustion boiler.
Further preferably, a material lifting machine is arranged between the rotary drum type drying furnace and the pyrolysis furnace, a discharge port of the rotary drum type drying furnace is connected with a feed port of the material lifting machine, and a discharge port of the material lifting machine is connected with a feed port of the pyrolysis furnace.
Further preferably, the cooling tower and the water pump are further included, a water outlet of the cooling tower is connected with a water inlet of the water pump, a water outlet of the water pump is connected with a water inlet of the spiral cooling conveyor, and a water outlet of the spiral cooling conveyor is connected with a water inlet of the cooling tower.
Further preferably, a butterfly valve is arranged between the air guide valve and the biomass/coal direct-fired boiler.
Further preferably, the drying device further comprises a biomass transport vehicle and a material conveyor, wherein the biomass transport vehicle is used for transporting biomass, a feed opening of the biomass transport vehicle is connected with a feed opening of the material conveyor, and the feed opening of the material conveyor is connected with a feed opening of the rotary drum type drying furnace.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the biomass pyrolysis charcoal making system can convert various agricultural and forestry wastes into biochar, simultaneously generates a large amount of pyrolysis gas, the pyrolysis gas is rich in combustible components such as H2, CO and macromolecular organic matters, and the like, is used as gas fuel, is introduced into a direct-fired boiler for incineration, and can play a role in improving the combustion efficiency. Meanwhile, the main components of the pyrolysis gas are reducing gas which is a nitrogen oxide reducing agent, and the purpose of reducing the emission of nitrogen oxide can be achieved by burning the reducing gas in a direct-fired boiler.
The patent provides a direct-fired power generation system based on biomass pyrolysis charcoal production, various types of forestry waste and the like are produced into carbon powder (or charcoal blocks) through pyrolysis and carbonization, and meanwhile, the residual pyrolysis gas is introduced into a direct-fired boiler to be burned for power generation.
Drawings
Fig. 1 is an overall schematic diagram of an embodiment of the present invention.
Reference numerals: 1. a rotary drum type drying furnace; 2. a pyrolysis furnace; 3. a screw cooling conveyor; 4. a biochar lifting spraying machine; 5. a louver filter; 6. a pyrolysis gas induced draft fan; 7. a biomass/coal direct fired boiler; 8. a steam turbine power plant; 9. a high temperature flue gas blower; 10. a chimney; 11. outputting power; 12. an air guide valve; 13. a material elevator; 14. a cooling tower; 15. a water pump; 16. a butterfly valve; 17. A biomass transportation vehicle; 18. a material conveyor.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings, but the embodiments of the present invention are not limited thereto.
As shown in fig. 1, a direct-fired power generation system based on biomass pyrolysis charcoal production comprises a biomass transport vehicle 17, a material conveyor 18, a rotary drum type drying furnace 1, a material elevator 13, a pyrolysis furnace 2, a spiral cooling conveyor 3, a biochar lifting sprayer 4, a cooling tower 14, a water pump 15, a shutter filter 5, a pyrolysis gas induced draft fan 6, a biomass/coal direct-fired boiler 7, a steam turbine power generation device 8, a high-temperature flue gas blower 9 and a chimney 10. Specifically, biomass transportation car 17 is used for transporting living beings, biomass transportation car 17's feed opening is connected with material conveyor 18's material loading mouth, material conveyor 18's feed opening and rotary drum formula drying-oven 1's material loading mouth are connected, rotary drum formula drying-oven 1's discharge gate is connected with material elevator 13's feed inlet, material elevator 13's discharge gate is connected with pyrolysis oven 2's feed inlet, pyrolysis oven 2's discharge gate is connected with spiral cooling conveyer 3's feed inlet, spiral cooling conveyer 3's discharge gate and charcoal promote the feed inlet that sprays machine 4 and be connected. Wherein, the water outlet of the cooling tower 14 is connected with the water inlet of the water pump 15, the water outlet of the water pump 15 is connected with the water inlet of the spiral cooling conveyor 3, and the water outlet of the spiral cooling conveyor 3 is connected with the water inlet of the cooling tower 14. The cooling water from the cooling tower 14 enters the jacket on the outer wall of the spiral cooling conveyor 3 under the action of a water pump 15 to cool the biochar. And, the biochar lifting sprayer 4 is provided with a spraying port, and the biochar on the biochar lifting sprayer 4 is sprayed to further cool the biochar for discharging.
The gas outlet of the pyrolysis furnace 2 is connected with the gas inlet of the shutter filter 5, the gas outlet of the shutter filter 5 is connected with the gas inlet of the pyrolysis gas induced draft fan 6, and the gas outlet of the pyrolysis gas induced draft fan 6 is connected with the gas inlet of the biomass/coal direct-fired boiler 7. Wherein, the biomass/coal direct-fired boiler 7 is connected with the steam turbine power generation equipment 8 to drive the steam turbine power generation equipment 8 to output 11 electric power to the power grid.
Meanwhile, a low-temperature flue gas outlet of the biomass/coal direct-fired boiler 7 is connected with the rotary drum type drying furnace 1 and the chimney 10, a high-temperature flue gas outlet of the biomass/coal direct-fired boiler 7 is connected with an air inlet of a high-temperature flue gas blower 9, an air outlet of the high-temperature flue gas blower 9 is connected with an air inlet of the pyrolysis furnace 2, and an air guide valve 12 is arranged between the high-temperature flue gas blower 9 and the biomass/coal direct-fired boiler 7. Further, a butterfly valve 16 is provided between the air guide valve 12 and the biomass/coal direct combustion boiler 7.
The method specifically comprises the following steps:
And 2, mixing part of biomass pyrolysis gas generated in the pyrolysis carbonization process in the step 1 with flue gas, leaving from the top of the pyrolysis furnace 2, and allowing part of the biomass pyrolysis gas to enter a biomass/coal direct-fired boiler 7 for incineration under the action of a pyrolysis gas induced draft fan 6, and driving a steam turbine power generation device 8 to output 11 electric power to a power grid. In this embodiment, the temperature of the mixture of the partial biomass pyrolysis gas and the flue gas leaving from the top of the pyrolysis furnace 2 is greater than 300 ℃.
And 3, part of low-temperature flue gas generated in the burning process of the biomass/coal direct-fired boiler 7 in the step 2 is led to the rotary drum type drying furnace 1 to provide heat for the rotary drum type drying furnace, part of low-temperature flue gas is discharged from a chimney 10, and high-temperature flue gas generated in the burning process of the biomass/coal direct-fired boiler 7 is mixed with air and then enters the pyrolysis furnace 2 to provide a heat source for the pyrolysis furnace. In this embodiment, the temperature of the high-temperature flue gas is greater than 700 ℃.
As shown in the combined figure 1, forestry processing waste and other agricultural waste capable of realizing specific carbonization are transported to a site through a biomass transport vehicle 17, the biomass is transported to a drum type drying furnace 1 through a material conveyor 18, the dried biomass is unloaded from a feed opening of the drum type drying furnace 1, and the dried biomass is conveyed to the top of a pyrolysis furnace 2 through a material elevator 13 to fall into the pyrolysis furnace 2. In the pyrolysis furnace 2, dry biomass undergoes pyrolysis from the top and is gradually converted into biochar, falls into the spiral cooling conveyor 3 from the bottom of the pyrolysis furnace 2, synchronously completes cooling to convey the biochar into the biochar lifting spray machine 4, and further cools the biochar to reach a dischargeable temperature.
High-temperature pyrolysis gas generated in the pyrolysis furnace 2 leaves from the side wall of the pyrolysis furnace 2, enters a downstream shutter filter 5 under the action of a pyrolysis gas induced draft fan 6, separates small particle solids carried in the pyrolysis gas, and then enters a downstream biomass/coal direct-fired boiler 7 for incineration, and the biomass/coal direct-fired boiler 7 is connected with a steam turbine power generation device 8 so as to drive the steam turbine power generation device 8 to output power 11 to a power grid.
In the high-temperature flue gas blower 9, a high-temperature flue gas is released from the biomass/coal direct-fired boiler 7, passes through a high-temperature flue gas pipeline and a butterfly valve 16, is mixed with a certain amount of air through an air guide valve 12, and enters the pyrolysis furnace 2 to be used as a heat source in the biomass pyrolysis process.
The low-temperature flue gas after heat exchange discharged from the biomass/coal direct-fired boiler 7 enters a drying flue gas pipeline to provide heat for the drum-type drying furnace 1, and the dried flue gas returns to a chimney 10 to be discharged.
The biomass pyrolysis charcoal making system can convert various agricultural and forestry wastes into biochar, simultaneously generates a large amount of pyrolysis gas, the pyrolysis gas is rich in combustible components such as H2, CO and macromolecular organic matters, and the like, is used as gas fuel, is introduced into a direct-fired boiler for incineration, and can play a role in improving the combustion efficiency. Meanwhile, the main components of the pyrolysis gas are reducing gas which is a nitrogen oxide reducing agent, and the purpose of reducing the emission of nitrogen oxide can be achieved by burning the reducing gas in a direct-fired boiler.
The patent provides a direct-fired power generation system based on biomass pyrolysis charcoal production, various types of forestry waste and the like are produced into carbon powder (or charcoal blocks) through pyrolysis and carbonization, and meanwhile, the residual pyrolysis gas is introduced into a direct-fired boiler to be burned for power generation.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The direct-fired power generation system based on biomass pyrolysis charcoal making is characterized by comprising a rotary drum type drying furnace (1), a pyrolysis furnace (2), a spiral cooling conveyor (3), a biochar lifting spray machine (4), a shutter filter (5), a pyrolysis gas induced draft fan (6), a biomass/coal direct-fired boiler (7), steam turbine power generation equipment (8), a high-temperature flue gas blower (9) and a chimney (10), wherein a discharge port of the rotary drum type drying furnace (1) is connected with a feed port of the pyrolysis furnace (2), a discharge port of the pyrolysis furnace (2) is connected with a feed port of the spiral cooling conveyor (3), a discharge port of the spiral cooling conveyor (3) is connected with a feed port of the biochar lifting spray machine (4), a gas outlet of the pyrolysis furnace (2) is connected with a gas inlet of the shutter filter (5), the gas outlet of shutter filter (5) with the air inlet of pyrolysis gas draught fan (6) is connected, the gas outlet of pyrolysis gas draught fan (6) with the air inlet of living beings/coal direct combustion boiler (7) is connected, living beings/coal direct combustion boiler (7) with steam turbine power generation facility (8) are connected in order to drive steam turbine power generation facility (8) are through electric power output (11) to electric wire netting, just the low temperature exhanst gas outlet of living beings/coal direct combustion boiler (7) with rotary drum formula drying furnace (1) reaches chimney (10) are connected, the high temperature exhanst gas outlet of living beings/coal direct combustion boiler (7) is connected with the air inlet of high temperature flue gas blower (9), the gas outlet of high temperature flue gas blower (9) with the air inlet of pyrolysis furnace (2) is connected, just high temperature flue gas blower (9) with be equipped with empty between living beings/coal direct combustion boiler (7) An air guide valve (12).
2. The direct-fired power generation system based on biomass pyrolysis charcoal making according to claim 1, wherein a material elevator (13) is arranged between the rotary drum type drying furnace (1) and the pyrolysis furnace (2), a discharge port of the rotary drum type drying furnace (1) is connected with a feed port of the material elevator (13), and a discharge port of the material elevator (13) is connected with a feed port of the pyrolysis furnace (2).
3. The direct-combustion power generation system based on biomass pyrolysis charcoal production according to claim 1, further comprising a cooling tower (14) and a water pump (15), wherein a water outlet of the cooling tower (14) is connected with a water inlet of the water pump (15), a water outlet of the water pump (15) is connected with a water inlet of the spiral cooling conveyor (3), and a water outlet of the spiral cooling conveyor (3) is connected with a water inlet of the cooling tower (14).
4. The direct-fired power generation system based on biomass pyrolysis charcoal production according to claim 1, characterized in that a butterfly valve (16) is arranged between the air guide valve (12) and the biomass/coal direct-fired boiler (7).
5. The direct-combustion power generation system based on biomass pyrolysis charcoal production according to claim 1, further comprising a biomass transport vehicle (17) and a material conveyor (18), wherein the biomass transport vehicle (17) is used for transporting biomass, a feed opening of the biomass transport vehicle (17) is connected with a feed opening of the material conveyor (18), and a feed opening of the material conveyor (18) is connected with a feed opening of the rotary drum type drying furnace (1).
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112342045A (en) * | 2020-11-27 | 2021-02-09 | 上海动银科技有限公司 | A direct combustion power generation system based on biomass pyrolysis to make carbon and its co-production process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112342045A (en) * | 2020-11-27 | 2021-02-09 | 上海动银科技有限公司 | A direct combustion power generation system based on biomass pyrolysis to make carbon and its co-production process |
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