CN109370649B - Biomass self-heating double-flow gasification system - Google Patents
Biomass self-heating double-flow gasification system Download PDFInfo
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- 238000002309 gasification Methods 0.000 title claims abstract description 53
- 239000002028 Biomass Substances 0.000 title claims abstract description 37
- 238000010438 heat treatment Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000000746 purification Methods 0.000 claims abstract description 21
- 238000002485 combustion reaction Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 34
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 23
- 239000003546 flue gas Substances 0.000 claims description 23
- 239000002737 fuel gas Substances 0.000 claims description 17
- 239000000446 fuel Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 8
- 239000012774 insulation material Substances 0.000 claims description 3
- 239000010902 straw Substances 0.000 description 7
- 238000012546 transfer Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 240000006394 Sorghum bicolor Species 0.000 description 1
- 235000011684 Sorghum saccharatum Nutrition 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 244000144977 poultry Species 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
- C10J2300/092—Wood, cellulose
-
- 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
- C10J2300/0953—Gasifying agents
- C10J2300/0973—Water
- C10J2300/0976—Water as steam
-
- 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
- C10J2300/12—Heating the gasifier
- C10J2300/1223—Heating the gasifier by burners
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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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Solid-Fuel Combustion (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The invention discloses a biomass self-heating double-flow gasification system, which comprises 2 boilers, wherein the boilers are separated by adopting a heat conduction material, the lower part of each boiler is provided with a feeding funnel, the bottom of each boiler is respectively connected with a water storage tank, an air pump and a gas storage tank, the upper end of each boiler is respectively provided with a cyclone separator, the cyclone separator is connected with a heat exchanger, the heat exchanger is also connected with the water storage tank and a purification tower, and the purification tower is respectively connected with a chimney and the gas storage tank; the boiler combustion can be subjected to afterburning through afterburning, so that heat is fully utilized, and the heat efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of biomass energy utilization, and particularly relates to a biomass self-heating dual-flow gasification system.
Background
China has abundant biomass energy, according to measurement and calculation, the theoretical biomass energy resource of China is about 50 hundred million tons of standard coal, which is about 4 times of the total energy consumption of China at present, under the condition of collectability, the biomass energy resource available in China is mainly traditional biomass, including crop straws, firewood, livestock and poultry manure, household garbage, industrial organic waste residues, wastewater and the like.
According to the national straw resource survey results, the theoretical resource amount of crop straws in China is 8.2 hundred million tons, the resource amount of straw collectable is 6.87 hundred million tons, and the resource amount of straw utilization is 2.15 hundred million tons. For biomass energy utilization, the most key technology at present is biomass gasification technology. At present, gasification furnaces for biomass gasification mainly comprise an updraft type fixed bed gasification furnace and a downdraft type fixed bed gasification furnace, as well as a circulating fluidized bed and a double fluidized bed. These gasifiers have advantages and disadvantages, and the updraft gasifiers have a problem of high tar content. The downdraft gasifier has large flow resistance and high ash content. The circulating fluidized bed can effectively solve the problem of high tar content; the traditional double fluidized bed system can separate the combustion process from the gasification process, part of the heat of combustion is supplied for gasification, and the purity of the obtained fuel gas is high; however, heat transfer between the two beds is carried out by a heat carrier, so that the mixture of the flue gas and the gasified gas is easy to cause, and the quality of the gas is reduced.
Disclosure of Invention
In order to overcome the defects of the technology, the invention provides a biomass self-heating double-flow gasification system which is a gasification system with high gas production and gasification efficiency and high heat efficiency, has important significance for accelerating the development and utilization of biomass technology and promoting the expansion of biomass energy utilization industrial scale, and has important practical significance for promoting the coordinated development of environment and economy.
The technical scheme adopted by the invention is as follows:
a biomass self-heating double-flow gasification system comprises 2 boilers, wherein the boilers are separated by heat conduction materials, a feeding funnel is arranged at the lower part of each boiler, the bottom of each boiler is respectively connected with a water storage tank, an air pump and a gas storage tank, a cyclone separator is arranged at the upper end of each boiler and is connected with a heat exchanger, the heat exchanger is also connected with the water storage tank and a purification tower, and the purification tower is respectively connected with a chimney and the gas storage tank;
furthermore, two purification towers are arranged, and the flue gas purification tower is connected with a flue gas outlet on the heat exchanger and is used for purifying the flue gas and then discharging the purified flue gas to a chimney; the gas purification tower is connected with a gas outlet of the heat exchanger, and the gas is purified and then discharged to a gas storage tank;
furthermore, a connecting pipeline of the cyclone separator and the heat exchanger is divided into two branches, one branch is a gas discharge channel, gas generated by boiler gasification is input into the heat exchanger, passes through a gas purification tower and is communicated with a gas storage tank; the other branch is a flue gas discharge channel, flue gas generated in the boiler is input into the heat exchanger, and the flue gas is discharged from the heat exchanger, passes through the flue gas purification tower and then is discharged from the chimney.
Further, the bottom of the reservoir is respectively connected with a water vapor pump and a heat exchanger through pipelines to form a liquid water channel; the upper part of the reservoir is respectively connected with the boiler and the heat exchanger through pipelines to form a water vapor channel, so that water vapor is provided for the boiler in the gasification process, and the water vapor generated by the heat exchanger is transmitted to the reservoir for storage;
furthermore, the heat insulation material is arranged outside the boiler, so that the loss of heat is avoided;
further, the gas storage tank is connected with a boiler through a pipeline to form a gas channel for afterburning the boiler;
furthermore, the two groups of feeding funnels are respectively used for feeding high-calorific-value biomass fuel and low-calorific-value biomass fuel;
the invention has the beneficial effects that:
according to the invention, the two hearths of the boiler can realize the switching of combustion and gasification, relatively pure gasified gas can be obtained, and the two hearths realize heat complementation, so that the heat efficiency is obviously improved; in addition, the invention is also provided with a afterburning measure, so that the speed of the boiler reaching the gasification temperature is higher, and the gasification efficiency of the boiler is greatly improved; the whole boiler realizes 24-hour uninterrupted gas production in the switching of the left side and the right side, the gas production efficiency is improved, no heat carrier is needed in heat transfer, the heat transfer performance is better, and the heat efficiency is higher.
Drawings
FIG. 1 is a diagram of a biomass self-heating dual-flow gasification system of the present invention;
FIG. 2 is a schematic view of a heat exchanger according to the present invention;
FIG. 3 is a schematic diagram of two-stage operation of the system;
in the figure, 1, a cyclone separator, 2, a first feeding funnel, 3, a second feeding funnel, 4, a first boiler, 5, a second boiler, 6, a reservoir, 7, a heat exchanger, 8, a flue gas purification tower, 9, a chimney, 10, a fuel gas storage tank, 11, a fuel gas purification tower, 12, a water vapor pump, 13, an air pump, 1-2, 1-1 are flue gas channel valves, 2-1, 2-2, 2-3, 2-4 are fuel gas channel valves, 3-1, 3-2 are air channel valves, 4-1, 4-2 are liquid water channel valves, and 5-1, 5-2, 5-3, 5-4 are water vapor channel valves.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 and 2, the invention provides a biomass self-heating dual-flow gasification system, which comprises 2 boilers, wherein the two boilers are separated by a material with better heat transfer property, two feeding funnels are arranged at the lower part of each boiler for feeding high-calorific-value biomass fuel and low-calorific-value biomass fuel respectively, the bottom of each boiler is connected with a water storage tank 6, an air pump 13 and a gas storage tank 10 through pipelines respectively, a steam input channel, an air channel and a gas afterburning channel are correspondingly formed, and valves 5-1, 5-2, 5-3 and 5-4 are arranged on the steam channel and used for controlling the input of steam; valves 3-1 and 3-2 are arranged on the air channel and are used for controlling the input of air; valves 2-4 and 2-3 are arranged on the gas afterburning channel and are used for controlling the input of afterburning gas; the upper end of each boiler is respectively provided with a cyclone separator 1, the cyclone separator 1 outputs the fuel gas or the flue gas in the corresponding boiler through an output pipeline, the cyclone separator is divided into two branches, one branch is divided into two branches, the fuel gas generated by gasification passes through a heat exchanger 7, then is connected with a fuel gas purification tower 11 and then is input into a fuel gas storage tank 10, and the branch is provided with a valve 2-1 (2-2); the other branch is used for discharging the flue gas generated in the boiler after passing through a heat exchanger 7 and then being connected with a flue gas purification tower 8 through a chimney 9, and a valve 1-1(1-2) is arranged on the branch; the heat exchanger 7 is also connected with a reservoir 6, the interior of the heat exchanger is cooled through the reservoir 6, and the generated steam is conveyed to the reservoir 6 through a pipeline; the heat insulation material is arranged outside the boiler, so that heat loss is avoided, heat can be kept, heat is fully utilized, and heat efficiency is improved.
For a more clear explanation of the technical solution of the present invention, the following is further explained in conjunction with the working process of the present invention:
firstly putting high-calorific-value biomass fuel into the left boiler I4 through the charging hopper, opening the valve 3-2, introducing air, wherein the left boiler I4 is a combustion furnace, and when the left boiler I4 reaches the gasification reaction temperature of 600-650 ℃, putting low-calorific-value biomass fuel (about 2-3 tons, taking corn straws as an example) into the left boiler I4) Opening a valve 5-4, introducing water vapor, and switching a left boiler I4 to a gasification furnace until the reaction finishes and the time of 1700m is required3-2500m3Water vapor; at the moment, the second 5 boilers on the right side put high-calorific-value biomass fuel (about 3 tons in sorghum straws for example) and open the valve 3-1, air is introduced, and 3500m is needed for reaching the gasification temperature3The left and right air and the right boiler are combustion furnaces; the right combustion furnace continuously provides heat for the left gasification furnace through the heat transfer partition plate; opening the valve 2-1, enabling the gas generated by the gasification furnace to enter the heat exchanger 7 for heat exchange, opening the valve 1-2, and enabling the flue gas generated by the combustion furnace to enter the heat exchanger 7 for heat exchange; after the heat exchange is finished, the fuel gas is purified and collected in the fuel gas storage tank 10 through the fuel gas purification tower 11, and the flue gas is purified through the flue gas purification tower 8 and discharged from the chimney 9. And opening the valve 4-2, enabling liquid water to enter the heat exchanger 7 from the water storage tank 6 to absorb heat of the flue gas and the fuel gas and evaporate into water vapor, and opening the valves 5-2 and 5-1 to enable the water vapor to enter the gasification furnace to serve as gasification gas.
As shown in fig. 3, the switching process of the biomass self-heating dual-flow gasification system provided by the invention is as follows:
the first stage is as follows: putting high-calorific-value biomass fuel into a hearth of a boiler I4, introducing air, wherein the boiler I4 is a combustion furnace, heating the hearth to achieve the gasification temperature, and simultaneously, the hearth of a boiler II 5 on the right reaches the gasification temperature (600-650 ℃), putting raw materials with more volatilization components for gasification, wherein in the process of gasifying the boiler II 5 on the right, the boiler I4 on the left transfers heat to the boiler II 5 on the right through a partition plate, so that the gasification on the right is ensured to obtain sufficient energy, and meanwhile, in order to rapidly achieve the gasification temperature, a valve 2-3 can be opened, introducing the fuel gas in the fuel gas storage tank 10 into the combustion furnace for full combustion, and releasing a large amount of heat; the stable heat supply enables the whole gasification process to be carried out smoothly, thus avoiding the loss of heat and improving the gasification efficiency.
And a second stage: when the temperature of the hearth of the first boiler 4 on the left side reaches the gasification temperature, the biomass fuel with low calorific value is put into the first boiler 4, the air valve 3-2 is closed, the steam valve 5-4 is opened, steam is introduced, and the first boiler 4 is switched into a gasification furnace; meanwhile, high-heat value biomass fuel is put into the right boiler II 5, the water vapor valve 5-3 is closed, the air valve 3-1 is opened, air is introduced, the right boiler II 5 is switched into a combustion furnace at the moment, heat is provided for the left gasification furnace through the partition plate, and the first stage and the second stage are repeated, so that the whole boiler is guaranteed to generate gas uninterruptedly.
In the stable operation process that lasts of whole boiler, control two hearths and constantly carry out the switching of gasification and burning, under having guaranteed thermal efficiency and energy-conserving prerequisite, every furnace has the decoupling zero that has realized gasification and burning, has obtained purer gasification gas, and follow-up purifier through the gasification gas can obtain clean combustible gas.
The above embodiments are only used for illustrating the design idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention accordingly, and the protection scope of the present invention is not limited to the above embodiments. Therefore, all equivalent changes and modifications made in accordance with the principles and concepts disclosed herein are intended to be included within the scope of the present invention.
Claims (6)
1. A biomass self-heating double-flow gasification system is characterized by comprising 2 boilers, wherein the boilers are separated by heat conduction materials, a feeding funnel is arranged at the lower part of each boiler, the bottom of each boiler is respectively connected with a water storage tank (6), an air pump (13) and a gas storage tank (10), a cyclone separator (1) is arranged at the upper end of each boiler, the cyclone separator (1) is connected with a heat exchanger (7), the heat exchanger (7) is also connected with the water storage tank (6) and a purification tower, and the purification tower is respectively connected with a chimney (9) and the gas storage tank (10); a connecting pipeline of the cyclone separator (1) and the heat exchanger (7) is divided into two branches, one branch is a fuel gas discharge channel, and fuel gas generated by boiler gasification is input into the heat exchanger (7); the other branch is a flue gas discharge channel, and flue gas generated in the boiler is input into the heat exchanger (7).
2. The biomass self-heating dual-flow gasification system according to claim 1, wherein the two purification towers are a flue gas purification tower (8) and a fuel gas purification tower (11), respectively, and the flue gas purification tower (8) purifies the flue gas output by the heat exchanger (7); and the gas purifying tower (11) purifies the gas output by the heat exchanger (7).
3. The biomass self-heating double-flow gasification system according to claim 1, wherein the bottom of the water storage tank (6) is respectively connected with a water vapor pump and a heat exchanger (7) through pipelines; the upper part of the water storage tank (6) is respectively connected with the boiler and the heat exchanger (7) through pipelines to form a steam channel, steam is provided for the gasification process of the boiler, and the steam generated by the heat exchanger (7) is transmitted to the water storage tank (6) again for storage.
4. The biomass self-heating dual-flow gasification system according to claim 1, wherein the boiler is externally provided with heat insulation materials, so that heat loss is avoided.
5. The biomass self-heating dual-flow gasification system according to claim 1, wherein the gas storage tank (10) is connected with a boiler through a pipeline to form a gas channel for post-combustion of the boiler.
6. The biomass self-heating dual-flow gasification system according to claim 1, wherein the feeding hoppers are provided with two groups for feeding high-heating value biomass fuel and low-heating value biomass fuel respectively.
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| DE3217030A1 (en) * | 1982-05-06 | 1983-11-10 | BKMI Industrieanlagen GmbH, 8000 München | Process for carbonising and gasifying carbonaceous solids |
| DE69534579T2 (en) * | 1994-12-01 | 2006-08-10 | Mitsubishi Jukogyo K.K. | Fixed bed gasifier and process for the gasification of organic waste |
| JPH101677A (en) * | 1996-06-17 | 1998-01-06 | Mitsubishi Heavy Ind Ltd | Fluid bed type dry distillation furnace |
| CN101139532B (en) * | 2006-09-08 | 2010-12-29 | 中国科学院过程工程研究所 | Solid fuel decoupling fluidized bed gasification method and device |
| CN102199450A (en) * | 2011-04-20 | 2011-09-28 | 唐山雷浩能源技术装备有限公司 | Gasification combustion coupling method and system for dual fluidized bed solid fuel |
| CN103361087A (en) * | 2012-05-04 | 2013-10-23 | 张荣光 | Pyrolysis and combustion coupled circular reaction method and device |
| CN103756731B (en) * | 2014-01-03 | 2015-11-11 | 东南大学 | A kind of reciprocating cycle double fluidized bed solid fuel gasification device and method |
| CN105018154B (en) * | 2014-04-16 | 2017-06-06 | 代建军 | Biomass double fluidized-bed indirect gasification system and its control method |
| CN106367122A (en) * | 2016-11-29 | 2017-02-01 | 河南农业大学 | Device and method for preparing synthetic gas by gasification of biomass carrier of oxygen |
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