【摘要】 为了提高水葫芦液化制取生物油品质,利用混合水平的正交试验方法,以丙酮为溶剂,在微型磁力高压反应釜中考察液化温度（240～280℃）、水葫芦和丙酮质量比（1:5、1:10）和液化时间（30、60、90 min）等对水葫芦直接液化制生物油的影响规律。结果表明,液化温度对水葫芦的直接液化过程有明显的影响。综合生物油产率及其品质分析可知,水葫芦最佳液化条件为液化温度270℃,水葫芦和丙酮的质量比1:5及停留时间90 min,此时生物油的产率达到最大值为22.54%,热值为34.51 kJ×kg^-1,酸值为23.17 mgKOH×g^-1。通过GC/MS对生物油组成进行分析,初步给出了部分酮类化合物（4-甲基-3-戊烯-2-酮）和含氮化合物（3-羟基吡啶）的转化机理,为水葫芦资源化利用及其他生物质液化提供理论依据。更多还原

【Abstract】 In order to improve the quality of bio-oil from water hyacinth, acetone was used as a solvent in a magnetic autoclave and mixed horizontal orthogonal test method was applied in the study. The liquefaction temperature（240 ℃ to 280 ℃）, water hyacinth to acetone mass ratio（1:5, 1:10） and liquefaction time（30, 60, 90 min） were selected as variables to investigate their effects on direct liquefaction of water hyacinth to produce bio-oil. The results show that reaction temperature has a significant effect on the direct liquefaction of water hyacinth. Results analysis of the yield and quality of bio-oil indicates that the optimal conditions are: residence time = 90 min, water hyacinth to acetone mass ratio = 1:5 and the maximum bio-oil yield = 22.54% at 270 ℃. The heating value and the acid value of the bio-oil were 34.51 kJ×kg^-1 and 23.17 mgKOH×g^-1, respectively. The gas chromatography/mass spectrometry（GC-MS） analysis of bio-oil composition presents the transformation mechanism of ketones（4-methyl-3-penten-2-one） and nitrogenous compounds（3-hydroxypyridine）, which can provide theoretical guideline for biomass liquefaction.更多还原