Two-section biomass cyclone high-temperature pyrolysis gasification furnace

Abstract

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...

AI Technical Summary

Problems solved by technology

[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

Images