Method for preparing biomass liquefied oil by biomass catalytic liquefaction

A biomass liquefied oil, catalytic liquefaction technology, applied in the preparation of liquid hydrocarbon mixture, petroleum industry and other directions, can solve the problem of restricting the utilization of biomass pyrolysis oil, and achieve the effect of mild process conditions and high yield

Inactive Publication Date: 2009-04-15
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These characteristics greatly limit the utilization of biomass pyrolysis oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] Add 10g of sawdust (dried at 100°C for 2 hours before use), 1g of bentonite, and 100mL of 95% (v / v) ethanol into the autoclave, heat up to 250°C after sealing, pressurize to 2Mpa, and keep in this state for 1 After 1 hour, feed cooling water in the autoclave to cool the material to room temperature, and take out the material. Filter the material, extract the filtrate four times with 50mL of dichloromethane, wash the filter residue four times with 25mL of dichloromethane, combine the extract and cleaning solution, and dry the extraction residue to a constant weight to obtain a residue of 3.2g. The rate is 71.01%. The mixture of the extract and the cleaning solution was distilled to remove dichloromethane and ethanol in the mixture to obtain biomass liquefied oil. The result showed that the oil yield was 52.17%.

example 2

[0018] Add 50g of sawdust (dried at 100°C for 2 hours before use), 1g of attapulgite, and 100mL of 95% (v / v) ethanol into the autoclave, heat up to 250°C after sealing, and pressurize to 6Mpa. After maintaining for 10 hours, feed cooling water into the autoclave to cool the material to room temperature, and take out the material. Filter the material, extract the filtrate four times with 50mL of dichloromethane, wash the filter residue four times with 25mL of dichloromethane, combine the extract and cleaning solution, and dry the extraction residue to a constant weight to obtain 2.8g of residue, which is transformed into The rate is 74.55%. The mixture of the extract and the cleaning solution was distilled to remove dichloromethane and ethanol in the mixture to obtain biomass liquefied oil. The result showed that the oil yield was 55.38%.

example 3

[0020] Add 20g of rice husk powder (dried at 100°C for 2 hours before use), 1g of attapulgite, and 100mL of 50% (v / v) ethanol into the autoclave, heat up to 250°C after sealing, and pressurize to 5Mpa. After being kept in the state for 2 hours, cooling water was introduced into the autoclave to cool the material to room temperature, and the material was taken out. Filter the material, extract the filtrate four times with 50mL of dichloromethane, wash the filter residue four times with 25mL of dichloromethane, combine the extract and the cleaning solution, and dry the extraction residue to a constant weight to obtain 1.9g of residue. The rate is 82.73%. The mixture of the extract and the cleaning solution was distilled to remove dichloromethane and ethanol in the mixture to obtain biomass liquefied oil. The result showed that the oil yield was 65.08%.

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Abstract

The invention discloses a method for preparing biomass liquefied oil by the catalytic liquefaction of the biomass, and relates to a method for preparing the bio-oil by the liquefaction of the biomass, which belongs to the field of chemical and industrial catalysis. The method for preparing the bio-oil comprises the steps as follows: arranging the biomass, solid acid and an aqueous solution containing C1-C3 monobasic alcohol in a pressure vessel; stirring and heating up the mixture to the temperature of 200 to 280 DEG C, with the pressure of 2 and 7MPa and the time of 0.5 to 10 hours; then cooling down the mixture to normal temperature and filtering the mixture; using C1-C3 halohydrocarbon to carry out extraction and refining to the obtained filtrate and filter residues respectively; combining the extracting and refining liquid and removing the halohydrocarbon and alcohol to prepare the biomass liquefied oil. Used independently as a technique for biological energy conversion, and with moderate conditions and yield as high as about 65 percent, the method is free from the discharging of alkaline solution and salt solution in the production process, thus laying the foundation for the industrial and clean utilization of the biomass.

Description

technical field [0001] The invention relates to a method for preparing bio-oil from biomass liquefaction, in particular to a method for preparing bio-oil from biomass through catalytic liquefaction, which belongs to the field of chemical industry catalysis. Background technique [0002] With the development of industrial society, human beings are increasingly dependent on energy, especially fossil fuel oil, which is called "industrial blood". However, the shortcomings of fossil fuels such as non-renewable coal and petroleum and environmental pollution caused by the use process have seriously restricted their long-term application. Energy shortage and huge environmental pollution caused by traditional fossil energy (such as depleting the ozone layer, leading to global warming, destroying the carbon balance of the ecological circle, releasing harmful substances, causing natural disasters such as acid rain) have become one of the most serious problems that plague the developmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/00
Inventor 菅盘铭付强潘多丽庄桂阳赵有华曾勇平孔黎明赵红坤
Owner YANGZHOU UNIV
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