煤制乙二醇设计说明书(缪双红)

安徽建筑大学毕业设计专业化学工程与工艺班级11化工1班学生姓名缪双红学号11206040103课题600Kt/a煤制乙二醇工艺设计指导教师葛业君2015年6月7日600Kt/a煤制乙二醇工艺设计I摘要目前研究的最具工业化前景的合成气制乙二醇路线为：首先由合成气中分离出的CO与亚硝酸甲酯反应合成草酸二甲酯，然后将草酸二甲酯催化加氢制得乙二醇。本文基于流程对上述合成气制乙二醇工艺流程进行了设计算与研究。以化工设计手册对合成气制乙二醇工艺中涉及到的亚硝酸甲酯和草酸二甲酯进行了物性数据估算。对亚硝酸甲酯再生反应器进行了设计与计算。对草酸二甲酯的合成及其相关的分离过程进行了设与计算。在反应器后设计精馏塔对碳酸二甲酯分离回收。对草酸二甲酯加氢制备乙二醇及相关分离过程进行了设计与计算。在反应器之后设计了两个精馏塔分别用于甲醇的回收以及草酸二甲酯的回收。关键词：乙二醇，亚硝酸甲酯，亚硝酸甲酯，草酸二甲酯，催化偶联法。安徽建筑大学本科生毕业设计IIAbstractAtpresentthemostindustrializedprospectprocessrouteofethyleneglycolpreparationbysyngasisaSfollows：firstCOSeparatedfromsyngasreactswithmethylnitritetosynthesizedimethyloxalate，madthenethyleneglycolispreparedbycatalytichydrogenationofdimethyloxalate．Inthispaper,thedesignandsimulationofpreparationprocessofethyleneglycolthroughsyngasmentionedabovewasstudiedbasedonprocesssimulation.FirstthephysicalpropertyofmethylnitriteanddimethyloxalateinvolvedintheprocessofsyngaspreparationofethyleneglycolwereestimatedbyChemicalEngineeringDesignManualinthispaper.Synthesisandrelatedseparationofdimethyloxalatewassetupwiththecalculations.Designdimethylcarbonatedistillationcolumnseparationandrecoveryafterthereactor.Dimethyloxalatehydrogenationofethyleneglycolandrelatedseparationprocessisdesignedandcalculated.Afterthereactordesignofthetworectificationcolumnsareusedtorecycletherecoveredmethanolanddimethyloxalate.Keywords：Ethyleneglycol；Methylnitrite；Dimethyloxalate；Catalyzedcouplingmethod600Kt/a煤制乙二醇工艺设计III目录前言..................................................................................................................................................11.1课题研究的背景......................................................................................................11.2研究目的与内容......................................................................................................2第一章综述................................................................................................................................31.1乙二醇的基本性质及用途................................................................................31.2乙二醇生产技术进展.............................................................................................41.2.1乙烯路线合成乙二醇........................................................................................51.2.2合成气路线制乙二醇.........................................................................................91.3草酸酯法制乙二醇的研究概况....................................................................131.3.1国外草酸酯法制乙二醇的研究概况...........................................................131.3.2国内草酸酯法制乙二醇的研究概况..........................................................151.3.3草酸酯法制备乙二醇产业化进展................................................................161.4乙二醇的市场供需情况....................................................................................19第二章工艺流程简介........................................................................................................212.1生产原理......................................................................................................................212.1.1草酸二甲酯制取................................................................................................212.1.2草酸二甲酯加氢制乙二醇..............................................................................212.2草酸二甲酯生产流程...........................................................................................22第三章工艺计算...................................................................................................................243.1物料衡算......................................................................................................................243.1.1乙二醇流量..........................................................................................................243.1.2制取乙二醇主要原料的物料衡算................................................................243.2能量衡算......................................................................................................................25安徽建筑大学本科生毕业设计IV3.2.1亚硝酸甲酯与一氧化碳的混合气加热器计算.........................................253.2.2草酸二甲酯合成固定床反应器能量与物料衡算....................................263.2.3草酸二甲酯冷凝分离过程由冷凝分离塔完成.........................................273.2.4亚硝酸甲酯再生过程物料与能量衡算.......................................................283.2.5亚硝酸甲酯冷凝分离能量衡算.....................................................................293.2.6氢气与草酸二甲酯混合气的加热器...........................................................303.2.7加氢制乙二醇过程的设计物料与能量衡算..............................................303.2.8乙二醇冷凝分离能量衡算..............................................................................32第四章主要设备选型及计算........................................................................................334.1草酸二甲酯精馏.....................................................................................................334.1.1计算依据..............................................................................................................334.1.2塔径计算..............................................................................................................344.2乙二醇精