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Comprehensive utilization method of biomass material

A biomass material and biomass raw material technology, which is applied in the field of biomass material resource utilization, can solve the problems of unsuitable industrial production, low gas yield, difficult quantitative control, etc., and achieve the effect of favorable catalytic efficiency and high-efficiency pyrolysis.

Inactive Publication Date: 2019-08-06
NANJING COJINA NEW MATERIAL INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Typically, gas yields are low due to the difficulty in reaching higher temperatures for water vapor gasification
At the same time, since the coke and the heat carrier circulate at a relatively high temperature during operation, it is difficult to quantitatively control, and it is easy to cause fluctuations and instability of the furnace temperature, so an auxiliary heating device is required
General Atomics of the United States uses 40% organic waste slurry for supercritical water oxidation or gasification to produce hydrogen, and CCUJ of Japan uses Ca0 as a catalyst for supercritical water gasification of coal, but both of them have brought about solid waste treatment problems , not suitable for industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Preliminarily cut the biomass raw material into pieces and put it into the air explosion tank, add 10% water and raise the temperature to 120°C, then pass in compressed air to increase the pressure to 8MPa, keep it at constant temperature and pressure for 10min, then release the pressure, and pass through 200 mesh Sieve to obtain biomass raw materials that meet the particle size requirements; mix and stir the biomass raw materials, dispersants, solvents, co-solvents, and water obtained in step a in a reactor evenly to obtain biomass slurry, and preheat to 200°C; add a transition metal composite catalyst to the slurry in step b, increase the pressure in the reactor to 30MPa, and continue to raise the temperature to 500°C with microwave-assisted heating to make the reactant system in the reactor reach a liquid supercritical state Carry out the reaction for 40 minutes to form a reaction product; after the reaction of step c is completed, the reaction product is discharged i...

Embodiment 2

[0018] Preliminarily cut the biomass raw material into pieces and put it into the air explosion tank. After adding a certain amount of water, the temperature is raised to 140°C, and then the compressed air is introduced to increase the pressure to 9MPa. Keep at constant temperature and pressure for 20 minutes, then release the pressure, and pass through 200 mesh Sieve to obtain biomass raw materials that meet the particle size requirements; mix and stir the biomass raw materials, dispersants, solvents, co-solvents, and water obtained in step a in a reactor evenly to obtain biomass slurry, and preheat to 300°C; add a transition metal composite catalyst to the slurry in step b, increase the pressure in the reactor to 35MPa, and continue to raise the temperature to 550°C with microwave-assisted heating to make the reactant system in the reactor reach a liquid supercritical state Carry out the reaction for 50 minutes to form a reaction product; after the reaction of step c is compl...

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Abstract

The invention relates to a method for recycling a biomass material, in particular to a method for converting the biomass material into activated carbon, a hydrogen-rich gas and a liquid fuel under supercritical conditions by microwave assistance of a composite metal catalyst. According to the method, the biomass material is subjected to gas explosion and fragmentation under high-pressure steam, sothat cellulose and hemicellulose are retained to the greatest extent, and the method can be better used for preparing energy chemicals through pyrolysis. The addition of solvent dimethyl sulfoxide can increase the specific surface area of the prepared solid product activated carbon. The use of flux NaF can improve the yield of the hydrogen-rich gas, meanwhile the composite metal catalyst is supported on alumina and silica substrates with transition metals, so that improvement of catalytic efficiency is especially facilitated.

Description

technical field [0001] The invention relates to a method for resource utilization of biomass materials, in particular to a method for converting biomass materials into activated carbon, hydrogen-rich gas and liquid fuels under supercritical conditions by using a composite metal catalyst microwave-assisted. Background technique [0002] The bottleneck of resource shortage and environmental pollution are two hot issues in the world today. Converting abundant coal resources, renewable biomass energy, and organic waste into clean, efficient high-calorific value gas fuels is a worldwide problem that needs to be solved urgently. [0003] Biomass pyrolysis carbonization technology is a kind of biomass energy utilization technology. Biomass carbonization is the pyrolysis of biomass at a very low heating rate and a temperature of about 400°C for a long time to obtain coke to the maximum extent, and the char yield is generally about 35%. The traditional kiln-type carbonization furna...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/02C10B57/08C10B57/16C10G1/00
CPCC10B53/02C10B57/08C10B57/16C10G1/00C10G2300/1011Y02E50/10
Inventor 不公告发明人
Owner NANJING COJINA NEW MATERIAL INST CO LTD
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