添加乙酸乙酯对生物油稳定性的影响  

Effect of ethyl acetate addition on the stability of bio-oil

作　　者：费雯婷[1] 刘荣厚[1] 周维奇[1] 尹仁湛[1] 

机构地区：[1]上海交通大学农业与生物学院生物质能工程研究中心,上海200240

出　　处：《燃料化学学报》2013年第6期667-672,共6页Journal of Fuel Chemistry and Technology

基　　金：国家自然科学基金(51176121);"十二五"国家科技支撑计划(2011BAD22B07)

摘　　要：以稻草秸秆快速热裂解生物油为样品,选取乙酸乙酯作为添加剂,按不同质量分数(分别为1%、6%、11%、16%和21%)添加到生物油中,考察原始生物油(空白组)及乙酸乙酯组生物油理化特性随贮存时间的变化规律。结果表明,随着乙酸乙酯添加质量分数增大,各乙酸乙酯组(1%、6%、11%、16%和21%)生物油最终pH值比空白组分别提高0.66%、2.33%、3.65%、4.32%和6.31%;最终含水率比空白组分别降低10.90%、20.17%、28.19%、30.27%和35.10%;最终运动黏度比空白组分别降低13.69%、39.08%、57.99%、66.00%和73.58%。FT-IR和GC-MS分析结果表明,添加乙酸乙酯能抑制生物油老化反应。此外,GC-MS分析结果还证实乙酸乙酯可以减少生物油内有机酸含量。The effects of ethyl acetate addition on the stability of bio-oil from rice straw fast pyrolysis were investigated through measuring the physicochemical properties of the bio-oil during storage.The results showed that by adding ethyl acetate of 1%,6%,11%,16% and 21%,the final pH values of the bio-oils are increased by 0.66%,2.33%,3.65%,4.32% and 6.31%,respectively;the final water contents are decreased by 10.90%,20.17%,28.19%,30.27% and 35.10%,respectively;the final viscosities are decreased by 13.69%,39.08%,57.99%,66.00% and 73.58%,respectively.The FT-IR and GC-MS analyses indicated that ethyl acetate can inhibit bio-oil from some aging reactions and reduce the content of organic acids.

关 键 词：生物油 热裂解 乙酸乙酯 稳定性 

分 类 号：TK6[动力工程及工程热物理—生物能]