乙酸甲酯与甲醇共沸物催化精馏水解工艺

以乙酸甲酯与甲醇共沸物为原料,采用阳离子交换树脂为催化剂,研究了乙酸甲酯催化精馏水解工艺。在实验中以捆扎包作为催化剂的装填方式,系统地研究了催化精馏段和提馏段的高度、进料位置、进料中含甲醇、水酯物质的量比、回流进料比和空速等对酯分解率的影响,获得了最佳的工艺条件。分析了传统的水解分离工艺,提出了可行的新工艺。在最佳工艺条件下,新工艺系统的能耗比传统的固定床工艺降低39.99%。

Hydrolysis of methyl acetate and methanol mixture in a catalytic distillation column

Cation-exchange resins were used as catalysts in the hydrolysis of a mixture of methyl acetate and methanol by catalytic distillation.Catalyst-bundles of ion exchange resin were packed in a column as a reaction zone.The influences of operation parameters on the conversion of methyl acetate,such as height of the reaction and stripping zones,feed location,the amount of methanol in the feed,mole ratio of feed water to MeOAc,volume ratio of reflux to feed MeOAc,the ratio of the feed volume flow rate of MeOAc to the volume of catalyst bed,were investigated,.and the optimal operation parameters were determined.The conventional hydrolysis separation technology was analyzed and a new process was proposed.The decrease in heat requirement was estimated to be about 39.99% of the conventional process under the optimal operating condition.