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Biomass microwave pyrolysis gasification method and system

A technology of pyrolysis gasification and biomass, applied in gasification process, gasification catalyst, waste fuel, etc., can solve the problems of poor quality and low synthesis gas yield

Active Publication Date: 2020-07-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problems of low synthesis gas yield and poor quality in the existing synthesis gas production process using biomass as raw material

Method used

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  • Biomass microwave pyrolysis gasification method and system
  • Biomass microwave pyrolysis gasification method and system
  • Biomass microwave pyrolysis gasification method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] Preparation of ceramic filter membranes used in the system of the present invention:

[0094]According to the mass percentage, 5% nickel oxide, 5% titanium oxide, and 90% olivine are fully mixed to prepare coating powder. First, 1.5 parts of coating powder are mixed with acrylic acid to obtain acidic coating powder. Among them, the acidic coating powder is coated with Layer powder mass percentage is 90%, pore-forming agent mass percentage is 10%; Then get 1 part of coating powder and urea and mix to obtain alkaline coating powder, wherein the coating powder mass percentage in the basic coating powder is 90%, The mass percentage of the pore-forming agent is 10%; the acidic coating powder and the basic coating powder obtained above are prepared into a slurry with water according to the volume ratio of 3:1, and after 6 hours of ball milling, the pore size of 20-100nm is obtained. Acidic and alkaline coating slurry, then the multi-channel ceramic membrane soaked in ethanol ...

Embodiment 2

[0096] According to the mass percentage, 5% nickel oxide, 10% iron oxide, 10% titanium oxide, 20% aluminum oxide and 55% olivine are fully mixed to prepare coating powder. Firstly, 3 parts of coating powder are mixed with acrylic acid to obtain an acidic coating. layer powder, wherein the mass percentage of coating powder in the acidic coating powder is 90%, and the mass percentage of pore-forming agent is 10%; then get 1 part of coating powder and urea to mix to obtain alkaline coating powder, wherein The mass percentage of the middle coating powder is 90%, and the mass percentage of the pore-forming agent is 10%; the acidic coating powder and the basic coating powder obtained above are respectively mixed with water according to the volume ratio of 2:1 to prepare a slurry, and after 6 After hours of ball milling, 20-100nm acidic and alkaline coating slurries were obtained, and then the multi-channel ceramic membrane soaked in ethanol (pore diameter 50nm, porosity 48%, length 6...

Embodiment 3

[0098] According to the mass percentage, 25% aluminum oxide, 5% iron oxide, 2.5% titanium oxide, 5% nickel oxide, 62.5% olivine are fully mixed to prepare coating powder. layer powder, wherein the mass percentage of coating powder in the acidic coating powder is 90%, and the mass percentage of pore-forming agent is 10%; then get 1 part of coating powder and urea to mix to obtain alkaline coating powder, wherein The mass percentage of the middle coating powder is 90%, and the mass percentage of the pore-forming agent is 10%; the acidic coating powder and the basic coating powder obtained above are respectively mixed with water in a volume ratio of 1:1 to prepare a slurry, and after 6 After hours of ball milling, 20-100nm acidic and alkaline coating slurries were obtained, and then the multi-channel ceramic membrane soaked in ethanol (pore diameter 50nm, porosity 48%, length 600mm, outer diameter 40mm, each multi-channel Ceramic membrane area 0.5m 2 ) into the acidic slurry for...

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Abstract

The invention discloses a biomass microwave pyrolysis gasification method and system. The method comprises the following steps: preheating a biomass raw material, and feeding the preheated biomass rawmaterial into a microwave pyrolysis reactor for oxidative pyrolysis reaction; feeding a pyrolysis product into a microwave cracking reactor for cracking reaction, thus obtaining cracking crude synthesis gas and a solid-phase material after the reaction; feeding the solid-phase material into a biochar microwave gasification reactor for reaction, thus obtaining gasified crude synthesis gas and activated carbon; feeding cracked crude synthesis gas and gasified crude synthesis gas into a raw material preheating tank to preheat a biomass raw material, performing gas-solid separation on the crude synthesis gas subjected to heat exchange, and feeding a gas-phase material obtained after gas-solid separation to a purification reactor, and treating the gas-phase material through a membrane filter in the purification reactor to obtain purified synthesis gas. According to the biomass microwave pyrolysis gasification method and system, the yield of the synthesis gas can be increased, the tar content in the obtained synthesis gas product is low, and meanwhile, a high-quality activated carbon product is co-produced.

Description

technical field [0001] The invention belongs to the technical field of biomass utilization, and relates to a biomass microwave pyrolysis gasification method and system. Background technique [0002] my country is rich in biomass resources, but the utilization methods are backward, and the energy utilization efficiency is low, resulting in a serious waste of biomass resources. Research and development of clean and efficient biomass indirect liquefaction technology has become one of the important contents to solve the current shortage of petroleum resources, develop biomass energy economy and reduce environmental pollution. Biomass indirect liquefaction technology essentially decomposes biomass into small molecular substances mainly composed of syngas, and then undergoes further chemical conversion into high-quality fuels and high value-added chemicals. However, the immaturity of biomass pyrolysis and gasification technology, low gasification efficiency, the purity of biomass...

Claims

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Application Information

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IPC IPC(8): C10J3/64C10J3/84
CPCC10J3/64C10J3/84C10J2200/06C10J2300/0916C10J2300/092C10J2300/0956C10J2300/0959C10J2300/0969C10J2300/0976C10J2300/0983C10J2300/1269Y02E50/30
Inventor 王鑫宋永一张彪赵丽萍吴斯侃刘继华
Owner CHINA PETROLEUM & CHEM CORP
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