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Biomass downdraft fixed bed gasifier heat supply system

A fixed-bed gasifier and heating system technology, applied in the field of biomass down-suction fixed-bed gasifier heating system, can solve the problems of long gasification time, inapplicability, low gas production, etc., and achieve low equipment investment. , sufficient source, the effect of fuel regeneration

Inactive Publication Date: 2015-03-18
DALIAN MING JIA METAL PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the disadvantages of existing downdraft gasifiers are: long gasification time, less gas production, more tar produced, high energy consumption and many other shortcomings. 850℃), not suitable for large-scale industrial gas and city gas supply

Method used

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  • Biomass downdraft fixed bed gasifier heat supply system
  • Biomass downdraft fixed bed gasifier heat supply system

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Embodiment

[0013] Embodiments, with reference to the accompanying drawings, a biomass downdraft fixed-bed gasifier heating system includes a primary silo 1, a secondary silo 3, a screw feeder 2, a water pump 14, a Roots variable frequency blower 8 and storage The gas device 9 is characterized in that a downdraft gasification furnace body 4 is installed below the secondary silo 3, and the exhaust pipe 5 of the downdraft gasification furnace body 4 communicates with the waste heat recovery device 6, and the waste heat recovery device 6 The upper exhaust pipe communicates with the air storage tank 27, and the air outlet pipe of the air storage tank 27 communicates with the spiral dust removal and washing device 7. The lower end of 7 is equipped with dust removal and washing valve 26; the upper end of waste heat recovery device 6 is equipped with water level gauge 21; connected; the air storage tank 27 is equipped with an air storage tank exhaust port 28, and a valve is installed on the air ...

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Abstract

The invention belongs to a biomass downdraft fixed bed gasifier heat supply system which comprises a primary stock bin (1), a secondary stock bin (3), and a gas storage device (9), and is characterized in that a downdraft gasifier body (4) is mounted below the secondary stock bin (3) and is communicated with a waste heat recovery device (6); an upper exhaust pipe of the waste heat recovery device (6) is communicated with a gas storage cylinder (27); a gas outlet pipe of the gas storage cylinder (27) is communicated with a spiral dedusting washing device (7); the upper end of the spiral dedusting washing device (7) is connected with a secondary oxygen supply port (22) and is communicated with a Roots frequency conversion fan (8); the upper end of the waste heat recovery device (6) is communicated with the gas storage cylinder (27) through a pipeline; the gas storage cylinder (27) is communicated with the spiral dedusting washing device (7) through a pipeline; the lower end of the waste heat recovery device (6) is communicated with a water vapor reduction hydrogen adding device (13) through a pipeline. The system of the invention is high in temperature in the gasifier, high in thermal efficiency, low in tar content, beneficial for environmental protection, low in equipment investment, high in heat production amount, and sufficient in fuel source.

Description

technical field [0001] The invention belongs to a heat supply system, in particular to a biomass downdraft fixed-bed gasification furnace heat supply system. Background technique [0002] Historically, the main way for human beings to obtain heat and kinetic energy is through the large amount of heat energy released by the combustion of fuel and oxygen. However, in today's extremely scarce resources, energy issues have become the primary strategic issues of all countries in the world today. From the point of view of the fuel form of energy, it can be divided into three forms: gaseous fuel, liquid fuel and solid fuel, and its corresponding fossil energy is natural gas, oil and coal. As we all know, fossil energy such as coal, oil, and natural gas are non-renewable energy sources, while biomass energy is the solar energy fixed on the earth by photosynthesis of plants, which is a typical renewable energy source. It is estimated that plants store energy equivalent to 10 times t...

Claims

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Application Information

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IPC IPC(8): C10J3/20C10J3/72
CPCC10J3/20C10J3/72Y02P20/10Y02P20/129
Inventor 张福祥宫元欣李涯
Owner DALIAN MING JIA METAL PROD
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