年产180万吨煤制甲醇的工艺设计-毕业设计.docx

word文档 可编辑 word文档 可编辑 年产180万吨煤制甲醇的工艺设计 摘 要 以煤为原料生产甲醇的工艺过程包括空气分离、煤气化、一氧化碳变换、合成气净化、甲醇合成、甲醇精馏等工艺单元。 本文以年产180万吨煤制甲醇为目的进行设计，主要围绕原料气的制备、甲醇的合成以及粗甲醇的精馏几个工段。设计的主要内容是首先通过对各工艺流程各方法进行对比分析，确定本次设计采用的工艺流程，然后对主要工艺段进行物料衡算以及热量衡算，并对工艺中涉及的主要设备进行简单选型和对加压精馏塔进行了设计计算。同时绘制了物料流程图及设备装配图。 关键词 煤制甲醇，工艺流程，工艺计算 ABSTRACT The process for producing methanol talking coal as feedstock is composed of such units as air separation,coal gasification,CO-shift,syn-gas purification,methanol synthesis and methanol rectification. The purpose of this paper was to design for the yearly production of 1.8 million tons of methanol from coal, mainly focusing on the preparation of raw material gas, the synthesis of methanol and the fractionation of crude methanol. The main content of this design embraced the followings: first, the study of the comparative analysis of each process and method, determining the design process; then making material balance and heat balance of the main technological section, and making model selection of the main equipment involved in the process and making design calculation of pressurized column. At the same time, the flowchart of the material and the assembly diagram were drawn. Keywords coal to methanol, process flow, process calculation 目 录 TOC \o 1-3 \h \z \u 摘 要 PAGEREF _Toc484024632 \h I ABSTRACT PAGEREF _Toc484024633 \h II 1 绪论 PAGEREF _Toc484024634 \h 1 1.1甲醇的性质 PAGEREF _Toc484024635 \h 1 1.1.1一般性状 PAGEREF _Toc484024636 \h 1 1.1.2物理性质 PAGEREF _Toc484024637 \h 1 1.1.3化学性质 PAGEREF _Toc484024638 \h 1 1.2甲醇的用途 PAGEREF _Toc484024639 \h 2 1.2.1甲醇的下游产品简介 PAGEREF _Toc484024640 \h 2 1.2.2汽车用清洁燃料 PAGEREF _Toc484024641 \h 3 1.3甲醇合成工艺 PAGEREF _Toc484024642 \h 4 1.3.1发展现状 PAGEREF _Toc484024643 \h 4 1.3.2合成方法 PAGEREF _Toc484024644 \h 5 1.3.3ICI工艺与Lurgi工艺比较 PAGEREF _Toc484024645 \h 6 1.3.4Lurgi三塔流程的特点 PAGEREF _Toc484024646 \h 7 1.4煤气化 PAGEREF _Toc484024647 \h 8 1.4.1国内外主要煤气化技术 PAGEREF _Toc484024648 \h 8 1.4.2GE水煤浆气化技术 PAGEREF _Toc484024649 \h 10 1.5变换工艺 PAGEREF