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Novel method for resource utilization of biomass pyrolysis tar

A biomass pyrolysis and biomass technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem that biomass tar cannot be used with high value , to achieve excellent catalytic performance, simple operation and low cost

Inactive Publication Date: 2020-12-29
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that biomass tar cannot be used with high value, compound tar with other active substances, and synthesize and prepare a catalyst material with catalytic performance. The material has high catalytic performance and is suitable for acid-base working environment. Easy to recycle and recycle

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  • Novel method for resource utilization of biomass pyrolysis tar
  • Novel method for resource utilization of biomass pyrolysis tar
  • Novel method for resource utilization of biomass pyrolysis tar

Examples

Experimental program
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Embodiment 1

[0031] Embodiment 1 of the present invention provides a method for preparing a graphite-based monometallic Fenton catalyst using biomass tar, comprising the following steps:

[0032] (1) Add biomass tar and ferric nitrate into the ball milling tank according to the mass ratio of 10:1, run at 500r / min for 10 minutes, let stand for 5 minutes to prevent the temperature in the tank from being too high, repeat 12 times, and make the ball milling time reach 2h, then take out the evenly mixed powder;

[0033] (2) Put the powder mixture obtained in the above step (1) into a tube furnace, calcinate it under a nitrogen atmosphere, raise the temperature to 1000° C. at a heating rate of 5° C. / min, and keep the temperature constant for 4 hours;

[0034] (3) Take out the material calcined in step (2) after cooling, pass through a 100-mesh sieve and store it in a nitrogen atmosphere to obtain a graphite-based monometallic Fenton catalyst, which contains multivalent iron active substances , ...

Embodiment 2

[0037] Embodiment 2 of the present invention provides a method for preparing a graphite-based monometallic Fenton catalyst using tar, comprising the following steps:

[0038] (1) Add biomass tar and ferric oxalate into the ball milling tank according to the mass ratio of 8:1, run at 300r / min for 10 minutes, and then let it stand for 5 minutes to prevent the temperature in the tank from being too high. Repeat 24 times to make the ball milling time reach 4h, then take out the evenly mixed powder;

[0039] (2) Put the powder mixture obtained in the above step (1) into a muffle furnace, and calcine it in an air atmosphere, and raise the temperature to 400° C. at a heating rate of 5° C. / min, and keep the temperature constant for 4 hours;

[0040] (3) Take out the material obtained by calcining in step (2) after cooling, pass through a 100-mesh sieve and refine it and store it in a nitrogen atmosphere to obtain a graphite-based Fenton catalyst. The main active substances in the cata...

Embodiment 3

[0043] Embodiment 3 of the present invention provides a method for preparing a graphite-based monometallic Fenton catalyst using tar, comprising the following steps:

[0044] (1) Add biomass tar and ferric oxalate into the ball milling tank according to the mass ratio of 5:1, run at 300r / min for 10 minutes, and then let it stand for 5 minutes to prevent the temperature in the tank from being too high. Repeat 12 times to make the ball milling time reach 2h, then take out the evenly mixed powder;

[0045](2) Put the powder mixture obtained in the above step (1) into a tube furnace in a quartz boat, perform high-temperature calcination under a nitrogen atmosphere, and raise the temperature to 800°C at a heating rate of 5°C / min, and keep the temperature constant for 4h ;

[0046] (3) Take out the material calcined in step (2) after cooling, pass through a 100-mesh sieve and store it in a nitrogen atmosphere to obtain a graphite-based Fenton catalyst, which contains graphite carbo...

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Abstract

Aiming at the current situations that the total amount of the biomass pyrolysis tar is huge, no resource utilization way exists and the like, the invention establishes a novel green, efficient and rapid resource utilization method for the biomass pyrolysis tar. According to the method, tar and an active metal salt solid are physically mixed in the absence of an aqueous solution through ball milling, and then the mixture is calcined to synthesize the graphite-based Fenton-like catalyst with high catalytic activity. The invention provides a simple, quick, efficient, green and solvent-free synthesis method, provides a suitable new method for high-value resource utilization of waste tar, can be expanded to high-value recycling of other waste carbon materials, and has important application prospects.

Description

technical field [0001] The invention relates to a new green solvent-free resource treatment method of biomass tar, which belongs to the new technology of solid waste treatment and disposal in the field of environmental protection and resource comprehensive utilization. [0002] technical background [0003] As a renewable energy with huge reserves, biomass energy has attracted widespread attention and has broad application prospects. As a large agricultural country, China produces a large amount of waste biomass - agricultural and forestry waste every year, of which nearly 90 million tons of agricultural and forestry waste is used in the power generation industry, which can effectively save coal resources and reduce carbon dioxide emissions. However, during the process of converting biomass into electricity through thermochemical pathways, a by-product, tar, is inevitably produced. This is a complex, condensable organic mixture with a maximum yield of over 40%. This by-prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/18B01J23/745B01J27/22B01J35/00B01J35/02B01J35/10B01J37/00B01J37/08
CPCB01J27/22B01J21/185B01J23/745B01J37/084B01J37/08B01J37/0036B01J35/39B01J35/40B01J35/60
Inventor 刘振刚李东
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI