异丁烯水合醚化反应精馏过程的多尺度分析  

Multi-Scale Study on Reactive Distillation of Isobutene Hydration and Etherification

作　　者：路士庆[1] 何丰[1] 李华波[1] 

机构地区：[1]中国船舶重工集团公司第七一八研究所,河北邯郸056027

出　　处：《舰船防化》2013年第1期22-25,共4页

摘　　要：为对反应精馏过程进行深入的理论分析,将反应精馏塔分为四个尺度:分子尺度、流体力学尺度、塔板尺度和全塔尺度。考虑了传质、传热、气液两相流动、反应热力学和动力学,建立了反应精馏过程的多尺度模型。使用该多尺度模型对异丁烯水合醚化体系进行了多尺度分析。结果表明,多尺度模型与平衡级模型的模拟结果相比减少一个百分点左右,因此在异丁烯水合醚化体系的模拟过程中流体力学尺度的影响可以忽略。另外体系中组分的沸点差较大,相差不低于73K,说明该过程受反应控制,也支持了上述结论。A multi-scale （MS） model for reactive distillation of isobutene hydration and etherification has been established. The model considers mass transfer, heat transfer, gas-liquid two-phase flow, thermodynamics and reaction kinetics together in different scales which includes molecule scale, fluid mechanical scale, tray scale and column scale. The system of isobutene hydration and ehterification was investigated. The results show that MS model is about one percent lower than EQ model, so the fluid mechanical scale can be negligible. In addition, the more bubble point difference is not less than 73K, showing that the process is reaction-controlled, which agrees with the above results.

关 键 词：反应精馏 多尺度 水合醚化 

分 类 号：TQ032[化学工程]