Poplar powder co-refined with soybean oil or fatty acid methyl esters in supercritical methanol in a high-pressure autoclave was studied to verify the promotion of poplar powder liquefaction and decomposition by oils ...Poplar powder co-refined with soybean oil or fatty acid methyl esters in supercritical methanol in a high-pressure autoclave was studied to verify the promotion of poplar powder liquefaction and decomposition by oils & fats and methyl esters in the present work. It was shown that the decomposition rate of poplar powder was improved by the fatty acid methyl esters as well as the soy bean oil, and the efficiency of the latter was higher than the former. Further study showed that the decomposition rate of cellulose, hemicellulose and lignin was all improved by co-refining, while the relative decomposition rate of lignin increased most remarkably. After vacuum distillation under mild condition, the light components of the liquid products from biomass co-refining were removed, and then petroleum ether was used to separate the remains into two parts, viz.: the bio-light oil mainly composed of the derivatives of oils and fats and the bio-heavy oil mainly composed of poplar powder liquefaction products. When more unsaturated oils and fats were used in the biomass co-refining, more products in the boiling range of diglycerides were produced, which were mainly contained in the bio-light oil obtained from the condensation of oils and fats derivatives with the poplar powder liquefaction products. The yield of the bio-heavy oil originating from the biomass co-refining is far more than that from the direct liquefaction of poplar powder in supercritical methanol, with the possible reasons analyzed in the article.展开更多
基金supported by the SINOPEC Corporation (No. S113077)
文摘Poplar powder co-refined with soybean oil or fatty acid methyl esters in supercritical methanol in a high-pressure autoclave was studied to verify the promotion of poplar powder liquefaction and decomposition by oils & fats and methyl esters in the present work. It was shown that the decomposition rate of poplar powder was improved by the fatty acid methyl esters as well as the soy bean oil, and the efficiency of the latter was higher than the former. Further study showed that the decomposition rate of cellulose, hemicellulose and lignin was all improved by co-refining, while the relative decomposition rate of lignin increased most remarkably. After vacuum distillation under mild condition, the light components of the liquid products from biomass co-refining were removed, and then petroleum ether was used to separate the remains into two parts, viz.: the bio-light oil mainly composed of the derivatives of oils and fats and the bio-heavy oil mainly composed of poplar powder liquefaction products. When more unsaturated oils and fats were used in the biomass co-refining, more products in the boiling range of diglycerides were produced, which were mainly contained in the bio-light oil obtained from the condensation of oils and fats derivatives with the poplar powder liquefaction products. The yield of the bio-heavy oil originating from the biomass co-refining is far more than that from the direct liquefaction of poplar powder in supercritical methanol, with the possible reasons analyzed in the article.
