毕业设计：年产5万吨甲醇合成工段的工艺设计.doc

本科毕业设计题 目 年产5万吨甲醇合成工段的工艺设计专 业 应用化学系 部 化学系2012年6月年产5万吨甲醇合成工段工艺设计摘 要 甲醇是简单的饱和脂肪醇，分子式为。它是重要的化工原料和清洁燃料，用途广泛，在国民经济中占有十分重要的地位。近些年，随着甲醇下游产品的开发及甲醇作为燃料的推广，甲醇的需求量大幅增长。因此，经过分析比较各种生产原料、合成工艺后，本设计采用焦炉煤气为原料年产5万吨甲醇，以满足国内需求。在查阅大量文献资料后，完成了年产5万吨甲醇合成工段工艺设计。针对本设计采用联醇工艺合成甲醇，对全工段的物料和能量进行了衡算，设计计算了主体设备-并流三套管甲醇合成塔。分析了以焦炉煤气为原料合成甲醇的可行性和经济性，对合成甲醇工艺流程选择、整个工段的经济核算、厂房布置、环境安全等方面进行了阐述。 关键词：甲醇合成 ；工艺设计 ；物料衡算 ； 能量衡算 ； 合成塔Synthesis Technology Design for Synthetic methanol of 50 thousand tons per year Abstract Methanol is a kind of extremely important organic industrial chemicals, and a kind of fuel too, it is the basic products of the chemistry of carbon one. It is very important in national economy. In recent years, with the development of the products that are made from methanol, especially the popularization and application of the fuel of methanol, the demand for the methanol rises by a large margin. In order to satisfy economic developments demands for methanol , have launched the methanol project of 50 thousand tons per year. On the basis of reading a large amount of literature, the technology design for producing methanol of 5000t/a has carried out in this paper. In allusion to the combination methanol system of methanol synthesis used in this paper, not only the material balance and the energy balance of the whole synthesis section are calculated, but also the main furnace equipment –three tube reactor of methanol synthesis are calculated. This paper analyzed the feasibility and economic significance, the methanol synthesizing process route is through gasification of coal, of which the main raw material is coal. Besides, the choice of technical process and economic accounting for all the synthesis section, layout, safety of environment and some other projects are discussed.Keywords : methanol synthesis; technology design; material balance; energy balance; reactor目 录摘 要 PAGEREF _Toc294513143 \h I外文页 PAGEREF _Toc294513144 \h II1 前言 1 1.1 甲醇的概述 12 甲醇的合成工段 23 工艺设计 114