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Device and method for preparing fuel through biomass gasification

A biomass and fuel technology, applied in the direction of biofuel, fuel, gasification process, etc., can solve the problems of tar pollution, difficult conversion of carbon dioxide, etc., achieve high utilization rate, reduce pretreatment cost, and low temperature

Inactive Publication Date: 2021-02-05
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Technical problem: The technical problem to be solved by the present invention is to provide a device for preparing fuel by gasification of biomass, which solves the problems of tar pollution and difficult conversion of carbon dioxide, simplifies the system and improves the utilization rate of biomass carbon element

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  • Device and method for preparing fuel through biomass gasification
  • Device and method for preparing fuel through biomass gasification

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Embodiment Construction

[0031] The specific implementation manner of the present invention will be further explained below.

[0032] The present invention couples biomass gasification and synthesis gas to prepare liquid fuel, and its main purpose is to solve the problem that the traditional process system is too complex to realize industrialization, crude synthesis gas purification will produce a large amount of black liquor, and carbon dioxide removal will reduce the utilization rate of carbon elements, etc. question. Through the coupling of the water-cooled dielectric barrier discharge reactor and the updraft fixed-bed gasifier, the direct liquid-phase synthesis of biomass gasification gas and the utilization of all components can be realized. In the discharge reactor, high-energy electrons can directly break up tar molecules. , to reduce its poisonous effect on the synthesis catalyst; the discharge reactor adopts a water-cooled ground electrode, which can not only control the synthesis temperature...

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Abstract

The invention discloses a device and method for preparing fuel through biomass gasification, and the device comprises a gasification furnace which is provided with a biomass inlet, a water vapor inlet, an oxygen inlet and a crude synthesis gas outlet, and biomass reacts with oxygen and water vapor in the gasification furnace to generate crude synthesis gas, the dielectric barrier discharge reactoris provided with a first-stage liquid-phase synthesis reactor, and the first-stage liquid-phase synthesis reactor is used for reacting the crude synthesis gas generated by the gasification furnace togenerate gas fuel. The dielectric barrier discharge reactor is also provided with a secondary liquid-phase synthesis reactor, and the secondary liquid-phase synthesis reactor is used for reacting theexhaust gas generated by the primary liquid-phase synthesis reactor to generate gas fuel. The device disclosed by the invention is simple, does not need a complex synthesis gas purification system, and is easier to realize distributed utilization of biomass, all components of the biomass gasified gas can be utilized, a carbon dioxide removal reaction is not needed, the energy consumption of the device is reduced, and the utilization rate of a carbon element is improved.

Description

technical field [0001] The invention relates to a technology for preparing liquid fuel by gasification of biomass, which belongs to the technical field of biomass utilization. Background technique [0002] my country is a country rich in coal, low in oil, and poor in gas, and currently has a high degree of dependence on foreign oil. Biomass, as the only renewable carbon source, has received widespread attention. my country has huge biomass reserves, but the energy density of biomass is low, and the cost of storage and transportation is high, which limits the promotion of biomass utilization technology. Biomass gasification technology is considered to be one of the most promising biomass utilization technologies due to its high efficiency and cleanliness. Common biomass gasifiers mainly include fixed bed, fluidized bed, and entrained bed gasifiers. The fixed bed gasifier has strong raw material applicability, small processing capacity and easy distributed utilization of biom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/20C10J3/06C10J3/30C10J3/72C10J3/82C10L1/02
CPCC10J3/06C10J3/20C10J3/30C10J3/72C10J3/82C10J2300/0916C10J2300/0959C10J2300/0976C10J2300/1276C10J2300/1665C10L1/02Y02E50/10
Inventor 肖睿崔东旭曾德望
Owner SOUTHEAST UNIV