离子交换树脂催化提质生物油及反应机理研究  

Study on upgrading of bio-oil by ion exchange resin catalyst and reaction mechanism

作　　者：鲁俊祥[1] 郭姝君 常杰[1] 付严[1] 

机构地区：[1]华南理工大学化学与化工学院传热强化与过程节能教育部重点实验室,广东广州510640

出　　处：《可再生能源》2016年第4期608-614,共7页Renewable Energy Resources

基　　金：国家重点基础研究发展计划"973"计划(2013CB228104);国家自然科学基金项目(21476090)

摘　　要：以Amberlyst-36离子交换树脂为催化剂,通过催化酯化、催化酯化脱水、催化酯化烷基化以及催化酯化烷基化脱水4种不同方案对生物油进行提质。结果显示:脱除水分有利于反应朝有利方向进行,加入2-甲基呋喃烷基化提质更易得到稳定、高沸点的长碳链产物;提质前后,生物油的酸值从41.12 mg Na OH/g降低至5.17mg Na OH/g,水分含量从27.82%降低至2.71%,热值从14.46 MJ/kg升高至32.94 MJ/kg,C元素含量从38.42%增至65.47%,O元素含量从51.19%降至24.33%。GC-MS谱图和机理研究表明,粗生物油中的不稳定组分转化成了稳定的目标产物(酯、醇、醚),它们的相对含量高达82.96%。Four cases were carried out to upgrade crude bio-oil using Amberlyst-36 ion exchange resin as catalyst, which were catalytic esterification, catalytic esterification and water removal, catalytic esterification alkylation, catalytic esterification alkylation and water removal, respectively. The results showed that water removal was in favor of driving the equilibria to the right side. Furthermore, more stable and higher boiling point products of long carbon chain were obtained by alkylation of 2-methylfuran. The acid number and water content of upgraded bio-oil were reduced from 41.12 mg Na OH/g to 5.17 mg Na OH/g, from 27.82% to 2.71%, respectively. Heating value was increased from14.46 MJ/kg to 32.94 MJ/kg, and the content of C element was raised from 38.42% to 65.47%, while the content of O element was decreased from 51.19% to 24.33%. GC-MS analysis and upgrading mechanism study indicated that labile components of crude bio-oil were transform to stable esters, alcohols and ethers, and the relative content of them reached up to 82.96%.

关 键 词：生物油 提质 酯化 脱水 烷基化 

分 类 号：TK6[动力工程及工程热物理—生物能]