Abstract: Separation of methylphenyldiethoxysilane from synthetic fluid was carried out by batch distillation, meanwhile the process was simulated with Aspen Plus 7.0 software. The results showed that chlorobenzene and methyltriethoxysilane were pre-separated under atmospheric pressure, then methylphenyldiethoxysilane was purified under the pressure of 5 kPa and reflux ratio at 3, the resulting product had the purity of 99.67% with the single pass yield of 70.56%. The feasibility of methylphenyldiethoxysilane separation process by batch distillation was verified by experiments and simulation model with Aspen Plus 7.0 as well. The relative error between simulation and experimental result was less than 8%, which could provide basic data for industrialization.

Key words: methylphenyldiethoxysilane, distillation, simulation, separation, chlorobenzene, methyltriethoxysilane

摘要： 以间歇精馏法提纯甲基苯基二乙氧基硅烷合成液，采用化工模拟软件Aspen Plus 7.0建立了工艺流程模型. 结果表明，在常压下先预分离回收氯苯和甲基三乙氧基硅烷，在5 kPa、回流比R=3条件下提纯甲基苯基二乙氧基硅烷，产品纯度为99.67%，单程收率为70.56%，证明了间歇精馏分离甲基苯基二乙氧基硅烷工艺的可行性. 模拟结果与实验结果相对误差小于8%，为甲基苯基二乙氧基硅烷提纯工艺的工业放大提供了必要的基础数据.

关键词: 甲基苯基二乙氧基硅烷, 精馏, 模拟, 分离, 氯苯, 甲基三乙氧基硅烷