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Method for preparing oxidization-resisting biological oil by taking waste poplar powder as raw material

An anti-oxidative, bio-oil technology, used in the preparation of liquid hydrocarbon mixtures, petroleum industry, processing of hydrocarbon oils, etc. Simple operation and reasonable utilization effect

Inactive Publication Date: 2018-08-24
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the equipment used for rapid pyrolysis consumes a lot of energy, the raw materials need to be dried and dehydrated, and the obtained bio-oil has a high oxygen content (30%-60%). At present, this method has not been widely used.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Mix poplar wood powder with a particle size of 20 to 80 mesh and water at a mass ratio of 1:10, put it into a batch reactor, and purge with nitrogen to remove the air in the reactor, and set the reaction temperature after sealing at 220°C, keep warm for 30 minutes under stirring conditions, then stop heating, pour cold water into the system, and cool the reaction system to room temperature to obtain a solid-liquid mixture;

[0018] (2) The above-mentioned reaction mixture is separated into solid and liquid with a funnel, and the solid obtained after filtration is extracted in a Soxhlet extractor with acetone until the color of the extract becomes colorless. The solvent was removed by rotary evaporation with a rotary evaporator, and the extract was dried in an oven at 60°C for 12 hours to obtain heavy bio-oil; the aqueous solution obtained by solid-liquid separation was extracted with ethyl acetate to obtain an ethyl acetate phase and a water phase, and the ethyl acet...

Embodiment 2

[0020] (1) Mix poplar wood powder with a particle size of 20 to 80 mesh and water at a mass ratio of 1:10, put it into a batch reactor, and purge it with nitrogen to remove the air. After sealing, set the reaction temperature to 240°C. Keep warm for 30 minutes under stirring conditions, then stop heating, pass cold water into the system to cool to room temperature, and obtain a solid-liquid mixture;

[0021] (2) The above-mentioned reaction mixture is separated into solid and liquid with a funnel, and the solid obtained after filtration is extracted in a Soxhlet extractor with acetone until the color of the extract becomes colorless. Rotary evaporator was used to remove the solvent by rotary evaporation, and the extract was dried in an oven at 60°C for 12 hours to obtain heavy bio-oil; the aqueous solution obtained by solid-liquid separation was extracted with ethyl acetate to obtain ethyl acetate phase and water phase, and the ethyl acetate phase The solvent was removed by ro...

Embodiment 3

[0023] (1) Mix poplar wood powder with a particle size of 20 to 80 mesh and water at a mass ratio of 1:10, put it into a batch reactor, and purge with nitrogen to remove the air in the reactor, and set the reaction temperature after sealing at 260°C, keep warm for 30 minutes under stirring conditions, then stop heating, pour cold water into the system, and cool the reaction system to room temperature to obtain a solid-liquid mixture;

[0024] (2) The above-mentioned reaction mixture is separated into solid and liquid with a funnel, and the solid obtained after filtration is extracted in a Soxhlet extractor with acetone until the color of the extract becomes colorless. The solvent was removed by rotary evaporation with a rotary evaporator, and the extract was dried in an oven at 60°C for 12 hours to obtain heavy bio-oil; the aqueous solution obtained by solid-liquid separation was extracted with ethyl acetate to obtain an ethyl acetate phase and a water phase, and the ethyl acet...

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Abstract

The invention relates to a method for preparing oxidization-resisting biological oil by taking waste poplar powder as a raw material and belongs to the technical field of biomass utilization. According to the method provided by the invention, waste poplar produced in an industrial processing process is used as the raw material and is liquefied to obtain the biological oil. Equipment for liquefaction is an intermittent type reaction kettle; a liquefaction solvent is water; the reaction temperature is 220 to 280 DEG C and heat insulation is carried out for 30min; a liquefaction product is subjected to filtering, leaching, extraction and rotary evaporation to obtain the biological oil. The method provided by the invention realizes effective utilization of the waste poplar powder in the industrial processing process and an operation method is simple; meanwhile, a liquefaction condition is that the water is used as the solvent so that environment protection is facilitated. A biological oilproduct produced by the method has relatively strong oxidization resistance and the removing rate of free radicals reaches 90.85 percent at maximum; the method has a good application prospect.

Description

technical field [0001] The invention belongs to the technical field of biomass utilization, and relates to a preparation method of bio-oil with oxidation resistance. technical background [0002] Biomass is abundant and renewable, and is an important renewable energy source to replace fossil fuels. At present, biomass conversion technologies mainly include biochemical conversion and thermochemical conversion, of which thermochemical conversion mainly includes pyrolysis, liquefaction and gasification, and the products include gas, liquid and solid, and the liquid product is usually called bio-oil. The chemical composition of bio-oil is relatively complex, mainly containing compounds such as ketones, aldehydes, phenols, olefins, fatty acids and esters. [0003] Rapid pyrolysis to prepare bio-oil is widely used in laboratories due to its advantages of fast heating rate and short gas phase residence time. However, the equipment used for rapid pyrolysis consumes a lot of energy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/00
CPCC10G1/00C10G2300/1003C10G2300/1011
Inventor 李明飞吴小菲彭锋李淑娴
Owner BEIJING FORESTRY UNIVERSITY
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