Biomass gasification method

A technology of biomass and gasification agent, applied in the field of biomass gasification, can solve the problems of difficulty in realization, low carbon conversion rate of the system, high tar content, and achieve the improvement of biomass conversion utilization rate, prolongation of residence time, and easy operation. Effect
CN101805638BActive Publication Date: 2013-07-10山东山科环境资源有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
山东山科环境资源有限公司
Publication Date
2013-07-10

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Abstract

The invention discloses a biomass gasification method. The method requires the steps of drying pyrolysis, combustion deoxidization and gas reforming in the gasification process to be relatively separated and continuously carried out in the same gasification furnace, simultaneously continuously gasification agent is introduced at three points in the whole gasification process and finally the cleanhigh quality product gas is obtained. In the invention, the equivalence ratio of the total gasification agent is 0.2-0.35, and the mass ratio of a first gasification agent, a second gasification agent and a third gasification agent is (0-0.8):(2-3.5):(0.7-1.5). The method controls the temperature and the reaction depth of each subarea in the furnace by controlling the mutual ratio of the biomass materials, the first gasification agent, the second gasification agent and the third gasification agent so as to control the quality of the final product gas. The obtained product gas can be used as the energy or the chemical engineering synthesis raw material gas. The method can generate clean product gas from the biomass, cannot generate secondary pollution and has high carbon conversion rate and simple implementation method.
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Description

technical field

[0001] The invention belongs to the technical field of biomass energy conversion, in particular to a biomass gasification method Background technique

[0002] With the increasingly tense energy supply situation and the increasing awareness of environmental protection, renewable and almost pollution-free biomass energy has attracted more and more attention. Gasification is one of the important ways to utilize biomass energy. Biomass gasification is a process in which biomass is used as raw material, air, oxygen (or oxygen-enriched gas), water vapor, etc. are used as gasification agents, and biomass is converted into combustible gas through thermochemical reaction under high temperature conditions. The goal of gasification is to transfer the energy in the raw material to the combustible gas as much as possible, while minimizing the tar content in the gas.

[0003] Whether it is a fixed bed or a fluidized bed, there is a lot of tar in the gas produced by the t...

Claims

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