甲醇合成毕业设计.doc

110kt/a粗甲醇合成、精馏工段工艺设计初步设计阶段 摘要 本次毕业设计项目为甲醇生产，设计阶段为初步设计，设计内容包括选择设计方案、化工工艺计算、绘图和撰写毕业设计说明书，其中绘图包括甲醇合成、精馏工段物料流程图，甲醇合成工段工艺管道及仪表流程图，粗甲醇精馏工段工艺管道及仪表流程图，甲醇合成工段设备平面布置图，粗甲醇精馏工段设备平面布置图。化工工艺计算包括合成工段物料衡算和热量衡算，精馏工段物料衡算和热量衡算。本次设计中采用的甲醇生产方法为天然气制甲醇，使用的是三塔精馏装置。 甲醇是一种重要的有机化工原料，还是一种优良燃料可作能源，甲醇和汽油或其它物质可混合成各种不同用途的工业用或民用的新型燃料。国内每年进口大量甲醇来满足市场需求，市场价格趋向国际市场化。近年来，甲醇需求量增加，部份甲醇厂又因为种种原因停产或减产，因此不能满足国内市场的需求。本次设计的实际意义在于设计出更好的甲醇生产方案，能够投入到生产中，保证生产出更优质量的甲醇，效率更高的甲醇生产装置，以解决供不应求的问题。 关键词：甲醇，合成，精馏，工艺计算 110kt / a Crude methanol synthesis, distillation process design preliminary design stage Author:Wang fang Tutor:Zhang xian ming Abstract This graduation project design for methanol production, design stage is the initial design, design elements include the selection of design schemes, chemical process calculation, drawing and writing the graduation design instruction, wherein the drawing, including synthesis of methanol distillation section material flow chart, the methanol synthesis process piping and instrument diagram, the crude methanol distillation process piping and instrument diagram map, methanol synthesis process equipment layout , the crude methanol distillation process equipment layout . Chemical process synthesis process including material balance and heat balance, distillation section material balance and heat balance. This design uses methanol production method for the production of methanol from natural gas, using a three-tower rectification device. Methanol is an important organic chemical raw materials, or an excellent fuel for energy, methanol and gasoline or other substances can be mixed into a variety of different uses of industrial or civil fuel. The annual import large quantities of methanol to meet market demand, the market trend of price of international market. In recent years, increased demand for methanol, methanol plant and in part because of various reasons p