Biomass gasifier with metal hose

Abstract

The invention discloses a biomass gasifier with a metal hose. The biomass gasifier comprises a gasifier body which is vertically arranged, a secondary cracking chamber, an annular breather pipe, a plurality of fans, an airway pipe and a metal hose, wherein the gasifier body comprises a gasification chamber, a combustion chamber and a gas collection chamber; the secondary cracking chamber surrounds the outer part of the combination chamber; the annular breather pipe surrounds the outer part of the secondary cracking chamber, the inner side wall of the annular breather pipe is the outer side wall of the secondary cracking chamber, and the inner side wall of the annular breather pipe is provided with a plurality of pores; the fans are arranged in the annular breather pipe, and all the fan have different revolving speeds; one end of the airway pipe is communicated to the gas collection chamber, and the other end of the airway pipe is communicated with the secondary cracking chamber; the metal hose is arranged in the airway pipe and extends to the other end from one end of the airway pipe, and space used for gas to flow is kept between the outer wall of the metal hose and the inner wall of the airway pipe; the outer wall of the metal hose is provided with a plurality of pits, and ceramic carriers are embedded into the pits; the ceramic carriers are coated with a tar cracking catalyst. The tar content of combustible gas is lowered.

Description

technical field [0001] The invention relates to a biomass gasifier with a metal hose. Background technique [0002] Biomass includes natural plants, manure, and urban and rural organic waste, and is a non-fossil renewable energy source. Compared with the energy utilization method of direct combustion of biomass, the utilization of biomass after pyrolysis and gasification has the advantages of expanding uses, reducing pollution, and being clean and efficient. However, my country's biomass pyrolysis and gasification technology is relatively backward. At present, the biomass pyrolysis and gasification treatment equipment mainly adopts fixed bed gasifier and normal pressure fluidized bed gasifier. A large amount of phenol water, high tar content, serious secondary pollution, small gas production per furnace, and low calorific value of the combustible gas produced have been restricted for use; the temperature fluctuation range of the atmospheric fluidized bed gasifier is large, T...

AI Technical Summary

Problems solved by technology

However, my country's biomass pyrolysis and gasification technology is relatively backward. At present, the biomass pyrolysis and gasification treatment equipment mainly adopts fixed bed gasifier and normal pressure fluidized bed gasifier. A large amount of phenol water, high tar content, serious secondary pollution, small gas production per furnace, and low calorific value of the combustible gas produced have been restricted for use; the temperature fluctuation range of the atmospheric fluidized bed gasifier is large, The production process is difficult to control, the operation reliability is poor, the heat loss is large, the slag discharge has a high carbon content, the produced combustible gas contains a lot of nitrogen, the calorific value is low, and the gas has a high dust concentration and is difficult to purify, so it has not been obtained so far. widely used

Moreover, because the lignin of the organism contains tar, the content of tar in the combustible gas generated after biomass combustion is also high, resulting in the generated combustible gas having peculiar smell, polluting the environment during use, and is not conducive to transportation and storage

The backwardness of biomass pyrolysis gasification technology hinders the clean and efficient utilization of biomass energy in my country

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