甜菜粕液化降解制备多元醇的工艺条件  

Processing conditions for preparation of polyol from beet pulp liquefied degradation

作　　者：闫晓霖[1] 王克冰[1] 

机构地区：[1]内蒙古农业大学理学院

出　　处：《化工进展》2011年第7期1623-1626,共4页Chemical Industry and Engineering Progress

基　　金：内蒙古自治区自然科学基金(2009MS0715);内蒙古自治区高等学校科学研究(NJ09048)项目

摘　　要：以甜菜粕为原料,在固体磷钨酸为催化剂、聚乙二醇400和丙三醇为复合液化剂的反应体系中,研究了甜菜粕液化降解制备植物基多元醇的方法。结果表明,甜菜粕具有很好的液化效果,在复合液化剂中聚乙二醇400与丙三醇质量比为4∶1、液化温度为160℃、催化剂用量为4%、液固比为12∶1、液化时间为160 min时,最高液化率可达99.0%,液化产物的羟值为45～86 mg/g,酸值为0.61～0.75 mg/g,为低羟值植物基多元醇。The catalyzed liquefied degradation of beet pulp（BP）in the system of solid phosphotungstic acid as catalyst and polyethyleneglycol 400（PEG 400）/ glycerol（GLY）as complex liquefier was studied,and the effect of processing conditions of BP liquefaction such as liquefaction temperature,catalyst amount,liquid-to-solid ratio,liquefaction time on the liquefaction reaction and properties of liquefaction product were investigated.The results showed that BP had good liquefaction effect,the optimum liquefaction processing conditions were determined as follows：PEG 400/glycerol mass ratio 4∶1,liquefaction temperature 160 ℃,catalyst amount 4%,liquid-to-solid mass ratio 12∶1 and liquefaction time 160min,the liquefaction rate would reach 99.0%.Hydroxyl value and acid value of liquefaction mixtures were 45-86 mg/g and 0.61-0.75 mg/g respectively,which was a low hydroxyl value plant-based polyol.

关 键 词：甜菜粕 固体磷钨酸 液化反应 降解 多元醇 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]