Biomass double fluidized bed indirect gasification system and its control method

A dual-fluidized bed gasification system technology, which is applied in the gasification of granular/powdered fuels, the manufacture of combustible gases, and the petroleum industry, can solve the problem of limited catalytic cracking tar capacity, reduced gasification efficiency of gasifiers, and bed materials. single problem, to achieve the effect of increasing gasification temperature and gasification efficiency, reducing tar content, and increasing calorific value
CN105018154BActive Publication Date: 2017-06-06代建军
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
代建军
Publication Date
2017-06-06

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Abstract

The invention relates to a biomass double fluidized bed indirect gasification system and its control method. Double fluidized beds interact to realize combustion and indirect gasification so as to prepare a high-quality biomass syngas. The system provided by the invention comprises a fluidized-bed combustor and its secondary cyclone separator, a fluidized-bed gasifier and a second cyclone separator, a combustor air injection system, a combustor bed material feeding system, a gasifier vapor injection system, a gasifier biomass feeding system, a gasifier and combustor bed material circulatory system, a bed material recovery system, a combustor and a gasifier pressure control system. By the internal and external circulating double fluidized bed indirect gasifier, nitrogen in the air is naturally separated from the syngas. Through improvement of structure design of a reactor, mixed use of different bed materials, a bed material circular flow system and improvement of the gas-solid mixing level, gasification efficiency is raised, calorific value of the syngas is increased, tar content is reduced, and high-quality syngas is prepared.
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Description

technical field

[0001] The invention relates to a novel biomass double fluidized bed indirect gasification system combined with internal and external circulation and a control method thereof. Background technique

[0002] Energy is the basis for the survival and development of modern society. China's current energy supply situation is severe and environmental problems are serious. The development of clean and renewable energy has become an urgent issue. Biomass energy is a low-carbon and clean energy. China has abundant biomass renewable energy resources. Its research, development, promotion and popularization will help reduce pollutant emissions and improve the ecological environment. Biomass gasification technology is a cleaner and more efficient conversion method than direct combustion. Synthesis gas can be used for heat generation, synthetic fuel and chemicals, and hydrogen production.

[0003] At present, no fixed bed, moving bed or fluidized bed gasifier can meet the ...

Claims

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