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
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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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