浆料催化精馏制备甲缩醛

研究了以甲醇和甲醛为原料,以大孔径强酸性阳离子交换树脂为催化剂,通过浆料催化精馏工艺制备甲缩醛的可行性。考察了催化剂含量、进料醇醛比、进料总流量和回流比等因素对该过程的影响。在选定的试验条件下,甲缩醛收率可达89%以上,塔顶甲缩醛的质量分数可达0.99以上。结果表明,该工艺用于制备甲缩醛是可行的。

Preparation of Methylal by Slurry Catalytic Distillation Process

The possibility of preparation of methylal from methanol and formaldehyde through slurry catalytic distillation catalyzed by acidic cation exchange resin with large size pores is discussed.The effects of catalyst concentration,feed composition,total feed and reflux ratio on the conversion ratio are analyzed by(experiment).The experimental results show that the conversion and the purity of methylal in the distillate can reach 0.89 and 0.99,respectively,and the slurry catalytic distillation process is practicable for preparing methylal.