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Abstract:
As LPG and oil alternative fuel, DME has drawn attentions at present. Physical properties of DME is similar for LPG, and don’t produce combustion gas to damage the environment, so, It can be produced largely. Like methane, DME is expected to become 21st century energy resources., DME is prepared by methanol dehydration, namely, synthetic methanol first and then methanol dehydration to dimethyl etherby methanol dehydration. Methanol dehydration to DME is divided into two kinds of liquid phase and gas-phase process. This design uses a process gas of dimethyl ether prepared by dimethyl. Heating methanol to evaporation, methanol vapor through the γ-AL
2
O3 catalyst bed, vapor methanol dehydration to dimethyl
etherby. This process is made of methanol process heating, evaporation, dehydration of methanol, dimethyl ether condensation and distillation etc. Completed for the following work: 1) Distillation tower used in separation of dimethyl ether and methanol recovery , column height of tower ,diameter, arrangement of column plate etc;
2) The calculation and selection of heat exchanger, pump;
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Key words: dimethyl ether, methanol, process design
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目 录
摘要 前言
化工设计课程设计任务书 ............................................................... I 前 言 ............................................................................. 1 1 文献综述 ........................................................................... 1
1.1 二甲醚概述 ................................................................... 1
1.1.1 二甲醚的发展现状 ....................................................... 1 1.1.