ZrO_2-Al_2O_3负载催化剂减压精馏催化酯化生物质裂解油(英文)  

Upgrading Bio-oil by Underpressure Reaction Rectification over Catalysts Supported by ZrO_2-Al_2O_3

作　　者：程毅[1] 邓旭升[1] 刘六军[1] 李瑞[1] 

机构地区：[1]北京林业大学林产化学加工工程系,北京100083

出　　处：《生物质化学工程》2014年第1期13-17,共5页Biomass Chemical Engineering

基　　金：国家林业局公益性行业科研专项(201204804)

摘　　要：以ZrO2-Al2O3作为催化剂载体,分别制备了SO2-4/ZrO2-Al2O3、NaOH/ZrO2-Al2O3、ZrO2-Al2O33种固体催化剂,并采用酯化后3A分子筛除水和减压反应精馏两种方法精制生物质裂解油。结果表明,在分别使用SO2-4/ZrO2-Al2O3,NaOH/ZrO2-Al2O3,ZrO2-Al2O33种催化剂的条件下,酯化后3A分子筛除水的方式,可以将产品的含水率降至19.6%、18.3%和15.6%,而反应精馏可以将产品含水率分别降低至4.8%、5.4%和3.8%,较之前者效果更加明显。另外,对于3种不同性质的催化剂,结合酯化度计算式,对催化生物油酯化效果进行评价,可知其催化活性为:SO2-4/ZrO2-Al2O3>NaOH/ZrO2-Al2O3>ZrO2-Al2O3。最后,将得到的油品性质进行检测(包括黏度、pH值、密度和热值等),各项结果表明,使用硫酸化催化剂,并采用减压反应精馏的酯化方式可以制备出一种性能优良的液体燃料。The ZrO2-Al2O3 was used as a carrier for preparing the catalysts SO^2-4/ZrO2-Al2O3、NaOH/Zr02-Al2O3、ZrO2-Al2O3 in the process of upgrading bio-oil by the methods of dehydration after esterification and reaction recification. Compared these two methods, we could conclude that dehyrating after esterification over 3A molecular sieve could decrease the moisture content to 19.6%, 18.3% and 15.6% , while reaction recification were 4.8% , 5.4% and 3.8% which were better than before under the condition of SO^2-4/ZrO2-Al2O3、NaOH/Zr02-Al2O3、ZrO2-Al2O3 catalyzed, respectively. Meanwhile, according to the evaluation of the bio-oil catalyzed by the modified ZrOE-Al2 O3 with the formula of esterification degree, it indicated the activation of catalysts are SO^2-4/ZrO2-Al2O3、NaOH/Zr02-Al2O3、ZrO2-Al2O3. Moreover, the quality of the upgraded oil （ kinematics viscosity, pH value, density and heating value ） showed that the bio-oil upgraded by reaction rectification and catalyzed by sulphated metal oxide could produce a out-looking fuel.

关 键 词：生物油 催化酯化 酯化度 反应精馏 

分 类 号：TQ517.4[化学工程]