CN107057773B - Biomass gasification system and biomass gasification method - Google Patents
Biomass gasification system and biomass gasification method Download PDFInfo
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- CN107057773B CN107057773B CN201710169624.XA CN201710169624A CN107057773B CN 107057773 B CN107057773 B CN 107057773B CN 201710169624 A CN201710169624 A CN 201710169624A CN 107057773 B CN107057773 B CN 107057773B
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- 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
- C10J3/723—Controlling or regulating the gasification process
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- 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
- C10J3/725—Redox processes
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- 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
- C10J2200/00—Details of gasification apparatus
- C10J2200/15—Details of feeding means
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- 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
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0903—Feed preparation
- C10J2300/0909—Drying
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- 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
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/0916—Biomass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/133—Renewable energy sources, e.g. sunlight
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Solid-Fuel Combustion (AREA)
Abstract
The invention discloses a biomass gasification system and a biomass gasification method, wherein the system comprises a feeding device, a feeding system, a pre-drying device, an extrusion packing device, a feeding area, a furnace body, a drying area, a cracking area, a reduction area, a combustion area, a dust removal system, a heat exchange system, a filter, a fan, a water seal, a gas pipeline, a condensate pipeline, four groups of temperature detection devices, a flow limiting valve, a dust discharging area and six groups of material loading boxes; by adopting the method for preparing the fuel gas, each reaction zone of the gasifier in the system adopts a zoning method, the temperature can be accurately controlled, the gas generation rate is improved, the tar content in the generated gas is reduced, the gas can be fully reduced and completely cracked by the tar in a mode that the gas enters and exits from the side surfaces of the cracking zone and the reduction zone, the quality of the fuel gas is improved, and the contact rate of the gas and materials is effectively improved by adopting a W-shaped loop design in the material carrying box.
Description
Technical Field
The present invention relates to gasification apparatuses, and more particularly, to a biomass gasification system and a biomass gasification method.
Background
Biomass is a clean renewable energy source, and the reasonable utilization can relieve the pressure caused by the current conventional energy shortage and environmental pollution. Biomass gasification is one of the main ways to utilize biomass energy, and its basic process includes: biomass is converted into biomass fuel gas through thermochemical conversion, and the biomass fuel gas is sent to combustion equipment such as a boiler, an aluminum melting furnace or an internal combustion generator through a pipeline conveying system for combustion and utilization. However, in the biomass gasification process, tar components and coke are unavoidable byproducts, tar can be condensed at normal temperature, and coke, ash and the like form a coking substance, which can cause damage to equipment such as pipelines, elbows and the like due to adhesion and blockage of subsequent pipelines, and in view of the damage of tar, biomass fuel gas needs to be removed and purified before being used at a terminal end so as to ensure safe and stable use of a gas system. The above problems are generally caused by inaccurate control of the temperature of the cracking zone and too short a cracking time.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a biomass gasification furnace system.
The biomass gasification system is characterized by comprising a feeding device, a feeding system, a pre-drying device, an extrusion packing device, a charging area, a furnace body, a drying area, a cracking area, a reduction area, a combustion area, a dust removal system, a heat exchange system, a filter, a fan, a water seal, a gas pipeline, a condensate pipeline, four groups of temperature detection devices, a flow limiting valve, a ash discharging area and six groups of material loading boxes;
the feeding device is connected with the feeding system; the pre-drying device is connected with the feeding system; the pre-drying device, the extrusion packaging device and the charging area are sequentially connected through a conveying pipe; the furnace body is internally provided with a drying zone, a cracking zone, a reduction zone and a combustion zone from top to bottom in sequence, each zone in the furnace body is provided with a group of temperature detection devices, the combustion zone is connected with an ash discharging zone, and the ash discharging zone is connected with a charging zone; a group of material loading boxes are arranged in the material loading area, the drying area, the cracking area, the reduction area, the combustion area and the ash discharging area;
the left end and the right end of the material carrying box are both provided with gas channels, the top of the material carrying box is provided with a feed inlet, and a plurality of baffles connected with the box body of the material carrying box are arranged inside the material carrying box; a diversion table is arranged in the material carrying box, and a diversion steam turbine is fixedly arranged on the diversion table;
the gas channel at the right end of the carrying case in the combustion zone is connected with the gas channel at the right end of the carrying case in the reduction zone through a gas pipeline, the gas channel at the left end of the carrying case in the reduction zone is connected with the gas channel at the left end of the carrying case in the cracking zone, and the gas channel, the dust removing system, the heat exchange system, the filter, the fan and the water seal at the left end of the carrying case in the cracking zone are sequentially connected through the gas pipeline;
the condensate pipeline is led out from the heat exchange system, enters the furnace body, passes through the pre-drying device and enters the heat exchange system after passing out from the furnace body;
the flow limiting valve is connected with a gas channel at the left end of the loading box in the combustion zone through an air pipeline.
Preferably, the structure sizes of the charging area, the drying area, the cracking area, the reduction area, the combustion area and the ash discharging area are the same.
Preferably, the condensate pipeline is distributed around the drying zone and the cracking zone.
Preferably, the diversion steam turbine is controlled by a motor to rotate positively and negatively. The diversion steam turbine can be an impeller, and the flow direction of the air flow is adjusted through the rotation of the fan blade.
The invention also discloses a biomass gasification method of the biomass gasification system, which comprises the following steps:
1) The material is lifted by a feeding system and enters a charging area through a pre-drying device and an extrusion packaging device;
2) The material in the charging area moves to the drying area along with the material carrying box, the material in the drying area moves to the cracking area along with the material carrying box, the material in the cracking area moves to the reduction area along with the material carrying box, the material in the reduction area moves to the combustion area along with the material carrying box, the material in the combustion area moves to the ash discharging area along with the material carrying box, and a gas channel connected with a gas pipeline is controlled to be opened to finish the connection between the gas pipeline and the material carrying box;
3) Opening a flow limiting valve to enable materials in a combustion zone to burn, detecting temperatures by four groups of temperature detection devices, wherein the opening of the flow limiting valve is used for adjusting air flow;
4) The motor controls the diversion steam turbines of the cracking zone and the combustion zone to rotate clockwise respectively, so as to guide gas to enter from a left gas channel of the carrier box and flow out from a right gas channel, and controls the diversion steam turbines of the reduction zone to rotate anticlockwise so as to guide gas to enter from the right gas channel of the carrier box and flow out from the left gas channel;
5) And (3) closing the flow limiting valve and the gas channel after the material combustion in the combustion zone is finished, and repeating the flow 2).
By adopting the method for preparing the fuel gas, each reaction zone of the gasifier in the system adopts a zoning method, the temperature can be accurately controlled, the gas generation rate is improved, the tar content in the generated gas is reduced, the gas can be fully reduced and completely cracked by the tar in a mode that the gas enters and exits from the side surfaces of the cracking zone and the reduction zone, the quality of the fuel gas is improved, and the contact rate of the gas and materials is effectively improved by adopting a W-shaped loop design in the material carrying box.
Drawings
FIG. 1 is a schematic diagram of a biomass gasification system;
FIG. 2 is a schematic diagram of a carrier box in a biomass gasification system;
in the figure, a feeding device 1, a feeding system 2, a pre-drying device 3, an extrusion packing device 4, a charging area 5, a furnace body 6, a drying area 7, a cracking area, a reduction area 9, a combustion area 10, a dust removal system 11, a heat exchange system 12, a filter 13, a fan 14, a water seal 15, a gas pipeline 16, a condensate pipeline 17, four groups of temperature detection devices 18, a flow limiting valve 19, a dust discharging area 20, six groups of material loading boxes 21, a gas channel 22, a baffle plate 23, a feeding hole 24, a flow guiding table 25 and a flow guiding steam turbine 26.
Detailed Description
As shown in fig. 1 and 2, a biomass gasification system comprises a feeding device 1, a feeding system 2, a pre-drying device 3, an extrusion packing device 4, a charging area 5, a furnace body 6, a drying area 7, a cracking area 8, a reduction area 9, a combustion area 10, a dust removal system 11, a heat exchange system 12, a filter 13, a fan 14, a water seal 15, a gas pipeline 16, a condensate pipeline 17, four groups of temperature detection devices 18, a flow limiting valve 19, a dust discharging area 20 and six groups of material loading boxes 21;
the feeding device 1 is connected with the feeding system 2; the pre-drying device 3 is connected with the feeding system 2; the pre-drying device 3, the extrusion packing device 4 and the charging area 5 are sequentially connected through a conveying pipe; the furnace body 6 is internally provided with a drying zone 7, a cracking zone 8, a reduction zone 9 and a combustion zone 10 in sequence from top to bottom, each zone in the furnace body is provided with a group of temperature detection devices 18, the combustion zone 10 is connected with an ash discharging zone 20, and the ash discharging zone 20 is connected with a charging zone 5; a group of material loading boxes 21 are arranged in the material loading area 5, the drying area 7, the cracking area 8, the reduction area 9, the combustion area 10 and the ash discharging area 20;
the left end and the right end of the material carrying box 21 are both provided with a fuel gas channel 22, the top of the material carrying box 21 is provided with a feed inlet 24, and a plurality of baffles 23 connected with the box body of the material carrying box 21 are arranged inside; a diversion table 25 is arranged in the material loading box 21, and a diversion steam turbine 26 is fixedly arranged on the diversion table 25;
the gas channel 22 at the right end of the carrying box in the combustion zone 10 is connected with the gas channel at the right end of the carrying box in the reduction zone 9 through a gas pipeline, the gas channel at the left end of the carrying box in the reduction zone 9 is connected with the gas channel at the left end of the carrying box in the cracking zone 8, and the gas channel at the left end of the carrying box in the cracking zone 8, the dust removal system 11, the heat exchange system 12, the filter 13, the fan 14 and the water seal 15 are sequentially connected through a gas pipeline 16;
the condensate pipeline 17 is led out from the heat exchange system 12, enters the furnace body 6, passes through the pre-drying device 3 after passing out from the furnace body 6, and enters the heat exchange system 12;
the limiting valve 19 is connected with a fuel gas channel 22 at the left end of the loading box in the combustion zone 10 through an air pipeline.
The charging zone 5, the drying zone 7, the cracking zone 8, the reduction zone 9, the combustion zone 10 and the ash discharging zone 20 have the same structural dimensions.
Condensate line 17 is distributed around drying zone 7, cracking zone 8.
The diversion steam turbine 26 is controlled by a motor to rotate positively and negatively.
A biomass gasification method of a biomass gasification system, characterized by comprising the steps of:
1) The materials are lifted by the feeding system 2 and enter the charging area 5 through the pre-drying device 3 and the extrusion packaging device 4;
2) The material of the charging area 5 moves to the drying area 7 along with the material carrying box 21, the material of the drying area 7 moves to the cracking area 8 along with the material carrying box 21, the material of the cracking area 8 moves to the reduction area 9 along with the material carrying box 21, the material of the reduction area 9 moves to the combustion area 10 along with the material carrying box 21, the material of the combustion area 10 moves to the ash discharging area 20 along with the material carrying box 21, and a gas channel 22 connected with a gas pipeline 16 is controlled to be opened to finish the connection between the gas pipeline 16 and the material carrying box 21;
3) Opening a flow limiting valve 19 to enable materials in a combustion zone to burn, detecting temperatures by four groups of temperature detection devices 18, and adjusting air flow by opening the flow limiting valve 19;
4) The motor controls the diversion steam turbines 26 of the cracking zone 8 and the combustion zone 10 to rotate clockwise respectively, so as to guide gas to enter from the left gas channel 22 of the carrier box 21 and flow out from the right gas channel 22, and the motor controls the diversion steam turbines 26 of the reduction zone 9 to rotate anticlockwise so as to guide gas to enter from the right gas channel 22 of the carrier box 21 and flow out from the left gas channel 22;
5) After the material in the combustion zone is combusted, the flow limiting valve 19 and the fuel gas channel 22 are closed, and the process 2 is repeated).
Claims (3)
1. The biomass gasification system is characterized by comprising a feeding device (1), a feeding system (2), a pre-drying device (3), an extrusion packing device (4), a charging area (5), a furnace body (6), a drying area (7), a cracking area (8), a reduction area (9), a combustion area (10), a dust removal system (11), a heat exchange system (12), a filter (13), a fan (14), a water seal (15), a gas pipeline (16), a condensate pipeline (17), four groups of temperature detection devices (18), a flow limiting valve (19), a dust discharging area (20) and six groups of material loading boxes (21);
the feeding device (1) is connected with the feeding system (2); the pre-drying device (3) is connected with the feeding system (2); the pre-drying device (3), the extrusion packaging device (4) and the charging area (5) are sequentially connected through a conveying pipe; a drying zone (7), a cracking zone (8), a reduction zone (9) and a combustion zone (10) are sequentially arranged in the furnace body (6) from top to bottom, a group of temperature detection devices (18) are arranged in each zone in the furnace body, the combustion zone (10) is connected with a lower ash zone (20), and the lower ash zone (20) is connected with a charging zone (5); a group of material loading boxes (21) are arranged in the material loading area (5), the drying area (7), the cracking area (8), the reduction area (9), the combustion area (10) and the ash discharging area (20);
the left end and the right end of the material carrying box (21) are both provided with a fuel gas channel (22), the top of the material carrying box (21) is provided with a feed inlet (24), and a plurality of baffles (23) connected with the box body of the material carrying box (21) are arranged inside the material carrying box; a guide table (25) is arranged in the material loading box (21), and a guide steam turbine (26) is fixedly arranged on the guide table (25);
the gas channel (22) at the right end of the carrying case in the combustion zone (10) is connected with the gas channel at the right end of the carrying case in the reduction zone (9) through a gas pipeline, the gas channel at the left end of the carrying case in the reduction zone (9) is connected with the gas channel at the left end of the carrying case in the cracking zone (8), and the gas channel at the left end of the carrying case in the cracking zone (8), the dust removal system (11), the heat exchange system (12), the filter (13), the fan (14) and the water seal (15) are sequentially connected through a gas pipeline (16);
the condensate pipeline (17) is led out from the heat exchange system (12) and enters the furnace body (6), passes through the pre-drying device (3) after passing out from the furnace body (6) and enters the heat exchange system (12);
the flow limiting valve (19) is connected with a gas channel (22) at the left end of the loading box in the combustion zone (10) through an air pipeline;
the structure sizes of the charging area (5), the drying area (7), the cracking area (8), the reduction area (9), the combustion area (10) and the ash discharging area (20) are the same;
the condensate pipeline (17) is distributed around the drying zone (7) and the cracking zone (8).
2. A biomass gasification system according to claim 1, wherein said diversion turbine (26) is motor controlled in forward and reverse rotation.
3. A biomass gasification method of a biomass gasification system according to claim 1, comprising the steps of:
1) the material is lifted by a feeding system (2) and enters a charging area (5) through a pre-drying device (3) and an extrusion packaging device (4);
2) The material of the charging area (5) moves to the drying area (7) along with the material carrying box (21), the material of the drying area (7) moves to the cracking area (8) along with the material carrying box (21), the material of the cracking area (8) moves to the reduction area (9), the material of the reduction area (9) moves to the combustion area (10) along with the material carrying box (21), the material of the combustion area (10) moves to the ash discharging area (20) along with the material carrying box (21), and a gas channel (22) connected with a gas pipeline (16) is controlled to be opened to finish the connection between the gas pipeline (16) and the material carrying box (21);
3) Opening a flow limiting valve (19) to enable materials in a combustion zone to burn, detecting temperatures by four groups of temperature detection devices (18), wherein the opening of the flow limiting valve (19) is used for adjusting air flow;
4) The motor controls the diversion steam turbines (26) of the cracking zone (8) and the combustion zone (10) to rotate clockwise respectively, so as to guide gas to enter from a left gas channel (22) of the carrier box (21) and flow out from a right gas channel (22), and the motor controls the diversion steam turbines (26) of the reduction zone (9) to rotate anticlockwise so as to guide gas to enter from the right gas channel (22) of the carrier box (21) and flow out from the left gas channel (22);
5) And after the material combustion in the combustion area is finished, closing the flow limiting valve (19) and the fuel gas channel (22), and repeating the flow 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710169624.XA CN107057773B (en) | 2017-03-21 | 2017-03-21 | Biomass gasification system and biomass gasification method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710169624.XA CN107057773B (en) | 2017-03-21 | 2017-03-21 | Biomass gasification system and biomass gasification method |
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| Publication Number | Publication Date |
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| CN107057773A CN107057773A (en) | 2017-08-18 |
| CN107057773B true CN107057773B (en) | 2023-05-05 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1211286A (en) * | 1983-05-16 | 1986-09-16 | Hugh L. Campbell, Iii | Fixed bed gasifier with gas cleaning means and method for producing combustible gases |
| CN2438721Y (en) * | 2000-08-23 | 2001-07-11 | 杨群发 | Biomass gasification reaction furnace |
| CN205088193U (en) * | 2015-09-18 | 2016-03-16 | 广东碳中和能源开发有限公司 | Up -draft fixed bed gasifier of preparation low temperature, low tar gas |
| CN206646079U (en) * | 2017-03-21 | 2017-11-17 | 浙江金锅锅炉有限公司 | A kind of biomass gasification system |
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Address after: No.589 Huancheng South Road, Jindong District, Jinhua City, Zhejiang Province Applicant after: ZHEJIANG JINGUO BOILER Co.,Ltd. Applicant after: ZHEJIANG JINWO ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Address before: 321015 No. 589 South Road, Wucheng District, Zhejiang, Jinhua Applicant before: ZHEJIANG JINGUO BOILER Co.,Ltd. Applicant before: ZHEJIANG JINWO ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |
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Inventor after: Li Wenjian Inventor after: Wang Biaobing Inventor after: Lv Houming Inventor after: Zhou Chenghua Inventor after: Li Kai Inventor after: Sheng Jisheng Inventor after: Liao Yunbo Inventor before: Lv Houming Inventor before: Wang Biaobing Inventor before: Li Wenjian Inventor before: Liao Yunbo Inventor before: Zhou Chenghua Inventor before: Li Kai Inventor before: Sheng Jisheng |
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