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Biomass gasification device and biomass gasification method

A biomass and gasification agent technology, applied in the chemical industry, can solve the problems of energy loss, high sensible heat of gas, and more fly ash, etc., and achieve the effect of improving the efficiency of gasification treatment

Active Publication Date: 2017-12-08
SHENWU TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The current biomass gasification device has problems such as high tar content in the gasification product, a lot of fly ash, easy to block the pipeline, and high sensible heat of the gas, which leads to energy loss.

Method used

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  • Biomass gasification device and biomass gasification method
  • Biomass gasification device and biomass gasification method
  • Biomass gasification device and biomass gasification method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0106]Using sawdust as raw material, the average particle size of the sawdust in the down-suction fixed bed is 2cm, and the moisture content is 25%; the particle size of the sawdust in the up-suction fixed bed is 4cm, and the moisture content is 40%; % wood chips are added to the downdraft fixed bed gasifier and the updraft fixed bed gasifier respectively, and the gasification gas generated in the updraft fixed bed gasifier is introduced into the downdraft gasifier through the gas duct through the induced draft fan. In the second drying section of the fixed bed gasifier, it directly enters the second oxidation section through the gas duct, and at the same time, the gasification gas of the downdraft fixed bed gasifier passes through the second oxidation section, and all the gas passing through the second oxidation section The gas is introduced into the first drying section of the up-suction fixed-bed gasifier together by the gas pipe, and is led out from the gas outlet. ; Low-t...

Embodiment 2

[0109] Bagasse is used as a raw material, and the bagasse is dried and roughly formed. The average particle size of the bagasse in the downdraft fixed bed is 2 cm, and the moisture content is 30%. The average particle size of the bagasse in the updraft fixed bed gasifier is 4 cm, and the moisture content is 40%. Bagasse molded granules with a moisture content of 30% and bagasse molded granules with a moisture content of 40% were added to the downdraft fixed-bed gasifier and the updraft fixed-bed gasifier respectively, and the updraft gasifier produced The gasification gas is introduced into the second drying section of the downdraft fixed-bed gasifier through the induced draft fan and the gas conduit, and directly enters the second oxidation section through the gas duct, and at the same time the gasification of the downdraft fixed-bed gasifier The gas passes through the second oxidation section, and all the gas passing through the second oxidation section is introduced into the...

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Abstract

The invention discloses a biomass gasification device and method. The device comprises an updraft fixed bed gasification furnace and a downdraft fixed bed gasification furnace, wherein the updraft fixed bed gasification furnace comprises a first body; a first gasification space is defined by the first body; a first biomass inlet, a first gasified product outlet, a first gasified product inlet and a fuel gas outlet are formed in the first body; the downdraft fixed bed gasification furnace comprises a second body; a second gasification space is defined by the second body; a second biomass inlet, a second gasified product outlet and a second gasified product inlet are formed in the second body; the first gasified product outlet is communicated with the second gasified product inlet; the second gasified product outlet is communicated with the first gasified product inlet; the second gasified product inlet is higher than the second gasified product outlet; the first gasified product inlet is higher than the first gasified product outlet; the height difference between the first gasified product inlet and the first gasified product outlet is 1 / 3-1 / 2 of the height of the first body.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a biomass gasification device and a biomass gasification method. Background technique [0002] Biomass energy is the fourth largest energy in the world, second only to coal, oil and natural gas, and also the most abundant renewable energy. China is a large agricultural country with abundant biomass resources. In terms of agriculture alone, more than 700 million tons of agricultural waste is produced every year, which is equivalent to 250 million tons of crude oil. However, the utilization efficiency of biomass energy is not high. Every year, a large number of crop straws are burned directly, which not only causes air pollution and energy waste, but also poses great safety hazards. It can be seen that the development and utilization of biomass energy is of great significance. Biomass gasification is a process in which biomass is used as raw material, one or more of a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/20C10J3/72C10J3/02
CPCC10J3/20C10J3/721C10J3/725C10J2300/0916C10J2300/0956
Inventor 赵延兵李史吴道洪
Owner SHENWU TECH GRP CO LTD