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Biomass gas process and exclusive apparatus

A technology of biomass gas and special equipment, which is applied in the direction of waste fuel, combustible gas, fuel, etc., can solve the problems of low thermal efficiency and low calorific value of gas, and achieve the effect of increasing the calorific value of gas and ensuring stable production

Active Publication Date: 2015-05-27
徐州燃烧控制研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the existing technology, a biomass gas process and a special device are provided to solve the problems of low calorific value and low thermal efficiency of the existing biomass gasification gas

Method used

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  • Biomass gas process and exclusive apparatus
  • Biomass gas process and exclusive apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: In figure 1 In the process, the biomass raw material is transported to the gasification unit 1 for reaction, and the gasification gas is produced with a heating value of 800-3000kcal / Nm3 and a high-temperature gasification gas with a temperature of 450℃-1200℃. The high-temperature gas produced through the gas pipe 2 The chemical gas is directly sent to the trap 3 to remove dust or tar in the gasified gas to form a pure gasified gas of 15℃—1200℃. By adjusting the first regulating valve 5, the second regulating valve 13, and the third regulating valve 15. Control the gas flow of the first clean gas pipe 4, the second clean gas pipe 14 and the third clean gas pipe 17 to ensure that the internal temperature in the biogas generator 12 is constant at 10℃-30℃, 30℃-45℃ or 45℃— 60℃, the temperature range of normal temperature fermentation is 10℃~30℃, the temperature range of medium temperature fermentation is 30℃~45℃, and the temperature range of high temperature fermen...

Embodiment 2

[0028] Example 2: In figure 2 In the process, the biomass raw material is transported to the gasification unit 1 for reaction, and the gasification gas is produced with a heating value of 800-3000kcal / Nm3 and a high-temperature gasification gas with a temperature of 450℃-1200℃. The high-temperature gas produced through the gas pipe 2 The chemical gas is directly sent to the trap 3 to remove dust or tar in the gasified gas to form a pure gasified gas of 15°C to 1200°C, enter the heat exchanger 23, and heat the working fluid to 15°C to 1200°C. By adjusting the first regulating valve 5, the second regulating valve 13, and the third regulating valve 15, the heating flow of the first working fluid pipe 26, the second working fluid pipe 21 and the third working fluid pipe 22 is controlled to ensure that the biogas generator 12 The temperature in the medium is maintained at 10℃-30℃, 30℃-45℃ or 45℃-60℃, wherein the temperature of normal temperature fermentation (also called low temper...

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PUM

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Abstract

The invention relates to a biomass gas process, which comprises biomass gasification, gas purification, working fluid heating, biogas generator heating and gas collection, wherein a biogas generator is a biogas digester or biogas tank. The biomass gasification reaction process adopts a pyrolysis or gasification method, and a gasification device adopts a fixed bed, a fluidized bed or a entrained flow device; in a biogas generator heating stage, a hot working medium is used for heating and the internal temperature of the biogas generator is kept, and the hot working medium can adopt purified gasification gas, or other hot working media, i.e., air, water or oil; and in a gas collection stage, the purified biomass gasification gas and biogas are mixed according to a certain proportion to obtain a mixed gas with a thermal value of 2000-5000kcal / Nm3. The biomass gas process provided by the process has the advantages that the biomass gasification gas with the lower thermal value and the biogas with the higher thermal value are mixed to prepare the gas with the high thermal value, and meanwhile, on the basis that the equipment cost is not increased, the internal temperature of the biogas generator is kept, and the environmental requirements of biogas production are met.

Description

Technical field [0001] The invention relates to a fuel gas preparation process and a special device, in particular to a biomass fuel gas process and a special device. Background technique [0002] Biomass gasification is a thermochemical process that uses oxygen or oxygen-containing substances in the air as a gasification agent to oxidize carbon in solid fuels to generate combustible gas. The current biomass gasification fuel gas production process can be divided into two categories: gasification and pyrolysis. The biomass gasification technology uses air as a gasification agent, and the calorific value of the gas generated is between 800-1500kcal / Nm3 , Even if pure oxygen or water vapor is used as gasification agent, the calorific value of fuel gas will not exceed 3000kcal / Nm3; the calorific value of fuel gas produced by pyrolysis technology is only about 3000kcal / Nm3, and the gas production is very low. Due to the low calorific value and low thermal efficiency of gas, it a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L3/08C10J3/00C12P5/02
CPCY02E50/30
Inventor 孙昌栋张举乐刘远平姚强周娜
Owner 徐州燃烧控制研究院有限公司