Biomass catalytic pyrolysis method for co-production of gas-liquid fuels, chemicals and carbon materials

A catalytic pyrolysis and biomass technology, applied in the field of biomass catalytic pyrolysis, can solve the problems of high cost, strong corrosion, single high-value products, etc., and achieve the effect of developed porosity

Active Publication Date: 2021-04-20
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The method of the invention solves the problems of high cost, strong corrosion, single high-value products, and low utilization rate of biomass in the high value-added utilization process of biomass

Method used

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  • Biomass catalytic pyrolysis method for co-production of gas-liquid fuels, chemicals and carbon materials

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] The embodiment of the present invention describes a method for biomass catalytic pyrolysis to co-produce gas-liquid fuels, chemicals and carbon materials. The method specifically includes the following steps:

[0064]S1: After pulverizing the bamboo, take 2g of biomass and pretreat it in a fixed-bed reactor (diameter: 45mm, length: 60mm). Raw materials after pretreatment;

[0065] S2: put the pretreated raw material into the first stage of a two-stage fixed-bed reactor, and carry out in-situ catalytic pyrolysis reaction under a nitrogen atmosphere. The catalyst is biochar, and the mass ratio of catalyst to biomass is 1:10. The catalytic pyrolysis temperature is 500°C, the reaction time is 10 minutes, the nitrogen flow rate is 200mL / min, and the pretreated raw materials are fully catalyzed for pyrolysis reaction;

[0066] S3: Pyrolysis volatiles are passed into the second-stage reactor, and under the action of a nitrogen-doped carbon catalyst, an online catalytic upgrad...

Embodiment 2

[0073] S1: After pulverizing the bamboo, take 2g of biomass and pre-cure it in a fixed-bed reactor (diameter 45mm, length 60mm). Raw materials after pretreatment;

[0074] S2: put the pretreated raw material into the first stage of a two-stage fixed-bed reactor, and carry out in-situ catalytic pyrolysis reaction under a nitrogen atmosphere. The catalyst is biochar, and the mass ratio of catalyst to biomass is 1:10. The catalytic pyrolysis temperature is 600°C, the reaction time is 10 minutes, the nitrogen flow rate is 200mL / min, and the pretreated raw materials are fully catalyzed for pyrolysis reaction;

[0075] S3: Pyrolysis volatiles are passed into the second-stage reactor, and under the action of a nitrogen-doped carbon catalyst, an online catalytic upgrading reaction is carried out. The mass ratio of nitrogen-doped carbon to biomass is 1:20, and the reaction temperature is 600°C. The time is 10 minutes;

[0076] S4: After the condensable volatile matter is cooled, phen...

Embodiment 3

[0082] S1: After pulverizing the bamboo, take 2g of biomass and pre-cure it in a fixed-bed reactor (diameter 45mm, length 60mm). Raw materials after pretreatment;

[0083] S2: Put the pretreated raw material into the first stage of a two-stage fixed-bed reactor, and carry out in-situ catalytic pyrolysis reaction under a nitrogen atmosphere. The catalyst is biochar, and the mass ratio of catalyst to biomass is 1:5. The catalytic pyrolysis temperature is 600°C, the reaction time is 30 minutes, the nitrogen flow rate is 200mL / min, and the pretreated raw materials are fully catalyzed for pyrolysis reaction;

[0084] S3: Pyrolysis volatiles are passed into the second-stage reactor, and under the action of nitrogen-doped carbon catalyst, an online catalytic upgrading reaction is carried out. The mass ratio of nitrogen-doped carbon to biomass is 1:5, and the reaction temperature is 600°C. The time is 30 minutes;

[0085] S4: After the condensable volatile matter is cooled, phenolic...

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Abstract

The invention relates to the field of biomass catalytic pyrolysis, and specifically discloses a method for the co-production of gas-liquid fuels, chemicals and carbon materials by catalytic pyrolysis of biomass, in which biomass is subjected to catalytic pyrolysis to obtain compounds rich in phenols and aromatics of volatile matter. The volatiles are upgraded by online catalyst to obtain phenolic chemicals and aromatic liquid fuels. The non-condensable gas is catalytically reformed to obtain methane-enriched gas products. Nitrogen-doped carbon materials with developed porosity and rich in active nitrogen-containing functional groups were obtained under the synergistic action of biochar with a low proportion of activator and ammonia. Aromatic liquid fuels and methane-rich gas fuels can be used in fuel cells, internal combustion engines, and gas turbines to generate electricity and heat, and nitrogen-doped carbon materials can be used in catalysts and electrode materials. The whole process has low cost, low corrosion, abundant high-value products, and high utilization rate. The invention is beneficial to realizing high-value utilization of biomass.

Description

technical field [0001] The invention relates to the field of biomass catalytic pyrolysis, in particular to a method for co-producing gas-liquid fuels, chemicals and carbon materials through catalytic pyrolysis of biomass. Background technique [0002] Biomass is the only carbon-containing renewable energy resource. my country's biomass resources are very rich, and the potential utilization of biomass resources reaches 460 million tons of standard coal. Biomass can be converted into three-state products of charcoal, gas and oil through pyrolysis, but the low added value greatly limits its large-scale utilization. The biomass catalytic pyrolysis polygeneration technology can simultaneously prepare higher-grade gas and liquid fuels, chemicals and carbon materials. After further catalytic reforming of gas and liquid products and activation modification of carbon materials, it can be obtained High value-added gas and liquid fuels, chemicals and functional carbon materials greatl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B53/02C10L9/08C10L1/04C10L3/08C01B32/348C01B32/354C01B32/05B01J27/24B01J35/10B01J37/03
CPCB01J27/24B01J35/10B01J37/03C10B53/02C10L1/04C10L3/08C10L9/083C01B32/05C01B32/348C01B32/354Y02E50/10
Inventor 陈伟杨海平陈应泉杨晴王贤华邵敬爱张雄陈旭张世红陈汉平
Owner HUAZHONG UNIV OF SCI & TECH
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