年產(chǎn)2萬(wàn)噸二甲醚生產(chǎn)工藝設(shè)計(jì)

摘 要

本設(shè)計(jì)為年產(chǎn)2萬(wàn)噸二甲醚的生產(chǎn)工藝設(shè)計(jì)。二甲醚作為一種用途廣泛的化工產(chǎn)品，可主要用作冷凍劑、溶劑、萃取劑、氣霧劑和燃料等，還能代替柴油作汽車燃料，又可作為民用燃料。在本設(shè)計(jì)任務(wù)書中，簡(jiǎn)單介紹了二甲醚的性能、主要用途、生產(chǎn)現(xiàn)狀和發(fā)展趨勢(shì),并綜合考慮了二甲醚的市場(chǎng)前景、物料資源、生產(chǎn)工藝等。通過對(duì)工藝路線的比較研究，確定了以氣相甲醇脫水法作為本設(shè)計(jì)的工藝生產(chǎn)方法。根據(jù)設(shè)計(jì)任務(wù)的要求，甲醇進(jìn)料量為4998 kg/h。以Aspen Plus軟件進(jìn)行模擬計(jì)算，初步得到以下結(jié)論：反應(yīng)精餾塔的理論塔板數(shù)為20塊，甲醇回收塔的理論塔板數(shù)為20塊，得回流比為2。主要完成了工藝計(jì)算、二甲醚工藝流程示意圖。設(shè)計(jì)結(jié)果達(dá)到了設(shè)計(jì)課題的要求，完成了二甲醚的生產(chǎn)工工藝的初步設(shè)計(jì)，完成了物料、設(shè)備等的相關(guān)計(jì)算 。
關(guān)鍵詞：二甲醚；工藝設(shè)計(jì)；Aspen Plus

Abstract

This is a manufacturing process design for dimethyl ether acetate 20,000 tons per year. Dimethyl ether was widely used in chemical products, it was mainly used as a refrigerant, solvent, extractant, aerosol and fuel, and also to replace diesel fuel for vehicles, and also as a domestic fuel. The design introduced briefly the performance, the main purpose, production status and development trends of the dimethyl ether; and considering the market prospects, material resources, the production process, and so on. By comparing to the craft routes, I choose Vapor phase methanol dehydration to produce methyl acetate. According to the task of the design, the Methanol feed rate as 4998 kilogram per hour. Through the Aspen Plus simulation, get the following dates: the theoretical number of the distillation tower is 20, the theoretical number of the Methanol recovery tower is 20, and the reflux ratio is 2. The design was completed for the process flow diagram of DME. The design result reached the requirements of the design issues, completed the DME production process design, finished materials, thermal, etc-related calculations.

Key words:  Dimethyl Ether; process design; Aspen Plus

 
 
目 錄

摘 要 I
Abstract II
目 錄 III
1 文獻(xiàn)綜述 1
1.1二甲醚概述 1
1.1.1理化性質(zhì) 1
1.1.1二甲醚的用途 2
1.2二甲醚市場(chǎng) 3
1.2.1國(guó)內(nèi)市場(chǎng) 3
1.2.2國(guó)際市場(chǎng) 4
預(yù)測(cè) 6
1.3二甲醚合成工藝路線[ 6
1.3.1液相甲醇脫水法制DME 6
1.3.2氣相甲醇脫水法制DME 6
1.3.3合成氣一步法生產(chǎn)DME 7
1.2.4 CO2加氫直接合成DME 7
1.2.5 催化蒸餾法制DME 7
1.4設(shè)計(jì)方案 8
2 工藝設(shè)計(jì) 9
2.1設(shè)計(jì)任務(wù)要求 9
2.2工藝流程介紹 9
2.3工藝流程說明 9
2.3.1甲醇汽化 9
2.3.2反應(yīng) 10
2.3.3合成氣冷卻 10
2.3.4二甲醚精餾 10
2.3.5 甲醇回收塔 10
2.4催化劑 11
3 計(jì)算結(jié)果 12
3.1物料衡算 12
3.2精餾塔 16
3.3甲醇回收塔 21
4 設(shè)計(jì)總結(jié) 26
參考文獻(xiàn) 27
致 謝 29