催化精馏法制备甲缩醛  

Preparation of Methylal with Catalytic Distillation Methods

作　　者：褚效中[1] 

机构地区：[1]淮阴师范学院化学系,江苏淮安223300

出　　处：《淮阴师范学院学报（自然科学版）》2009年第1期64-66,共3页Journal of Huaiyin Teachers College;Natural Science Edition

基　　金：江苏省高校自然科学基金资助项目(08KJD530002);江苏省重点建设实验室基金项目(JSKC07045)

摘　　要：研究了以甲醇和甲醛为原料,98%的浓硫酸为催化剂,通过催化精馏工艺制备甲缩醛的可行性.考察了进料醇醛摩尔比、进料总流量和催化剂含量对该过程的影响.在回流比为6,催化剂含量为1%,甲醛的体积流量为2.8 mL/min,甲醇的体积流量为3.0 mL/min的条件下,塔顶产品甲缩醛的质量百分数可达96.6%.结果表明,该工艺可应用于制备甲缩醛.The possibility of methylal preparation was studied with catalytic distillation technology, which used methanol and formaldehyde as feeds and 98 % oil of vitriol as catalyst. Effects of the different mole feed ratios of methanol and formaldehyde, total flow rate of feeds and catalyst contents to this process were investigated. Moreover, mass weight of methylal in the tower overhead can reach 96.6 %, when the reflux ratio is 6, the catalyst content is 1%, the flow rate of methanol and formaldehyde is 2.8 mL/min and 3.0 mL/min, respectively. The results show that the catalytic distillation process is suitable to prepare methylal.

关 键 词：催化精馏 甲缩醛 甲醇 甲醛 

分 类 号：O621.3[理学—有机化学]