Two-section biomass cyclone high-temperature pyrolysis gasification furnace
A technology of pyrolysis gasification and biomass gas, which is applied in the gasification of granular/powdered fuels, the manufacture of combustible gas, and the petroleum industry. It can solve the problems of high tar content in biomass gas and reduce tar content, etc.
Active Publication Date: 2013-09-11
HARBIN INST OF TECH
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[0005] The purpose of the present invention is to provide a two-stage biomass cyclone high-temperature pyrolysis gasification furnace that can realize the biomass high-temperature pyrolysis gasification process, which is used to greatly reduce the content of tar in the produced biomass gas, and completely solve the problem of the original biomass The problem of high tar content in biomass gas in the gasification process
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[0011] The two-stage biomass high-temperature pyrolysis gasification furnace consists of a cyclone high-temperature pyrolysis gasification chamber 6 in the form of upper and lower cylinders and cones, a lower water vapor spraying pyrolysis gasification chamber 7, and a screw feeder 3. Biomass gas The discharge pipe 9, the first gas fuel high velocity burner 4, the second gas fuel high velocity burner 5, and the ash box 8 are composed. Among them, the screw feeder 3 driven by the motor 2, the lower front end of the screw feeder 3 is connected with the top of the cyclone pyrolysis gasification chamber 6, and the upper rear end of the screw feeder 3 is connected with the biomass material bin 1 The lower part of the cyclone pyrolysis gasification chamber 6 communicates with the upper part of the water vapor spray pyrolysis gasification chamber 7 in the form of constriction, which is equivalent to the function of the Venturi tube; the ash box 8 is located in the water vapor spray py...
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The invention discloses a two-section biomass cyclone high-temperature pyrolysis gasification furnace comprising an upper-section cyclone high-temperature pyrolysis gasification chamber, a lower-section vapour spraying pyrolysis gasification chamber, a screw feeder, a biomass gas exhaust pipe, a gas fuel high-velocity burner and a slab box. When the two-section biomass cyclone high-temperature pyrolysis gasification furnace disclosed by the invention is operated, the gas fuel high-velocity burner generates a high-temperature anaerobic flue gas, and the high-temperature anaerobic flue gas is spayed into the upper-section cyclone high-temperature pyrolysis gasification chamber at high velocity along a tangential direction and close to an inner wall side to form a strong cyclonic vortex; meanwhile, biomass materials fall into the upper-section cyclone high-temperature pyrolysis gasification chamber through the screw feeder and are mixed, heated and pyrolyzed with the high-temperature anaerobic flue gas, wherein fixed carbon is gasified, and a generated biomass gas is exhausted through the biomass gas exhaust pipe; the biomass gas heats fed water into vapours through a heat exchanger;and the vapours enter the lower-section vapour spraying pyrolysis gasification chamber through a Venturi tube so as to further pyrolyze and gasify carbon residues, and finally formed slag is discharged into the slag box. According to the invention, the content of tars contained in the biomass gas can be greatly reduced and the effective utilization of biomass energy is realized.
Description
technical field [0001] The invention relates to a biomass gasification furnace, in particular to a two-stage biomass cyclone high-temperature pyrolysis gasification furnace. Background technique [0002] In the utilization technology of biomass energy, biomass pyrolysis gasification technology is a process of converting solid biomass into gaseous fuel through thermochemical reaction, and its gaseous products can be used for power generation, gas supply, and heat concentration. However, the traditional gasification technology has problems such as high tar content in the fuel gas and difficult treatment of wastewater, especially the high tar content is the main problem facing the current biomass gasification technology. Since the existing biomass gasification technology adopts the method of burning part of the biomass material with low oxygen, and then using the heat and residual oxygen of the flue gas to pyrolyze and gasify the remaining biomass material, a large amount of t...
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IPC IPC(8): C10J3/60C10J3/66C10J3/62C10J3/48C10J3/50C10J3/72
Inventor 张玉董芃翟明齐国利朱群益
Owner HARBIN INST OF TECH