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1、480kt/a粗甲醇合成、精憎工段初步设计阶段工艺设计摘要用天然气制甲醇生产技术成熟、成木低,对我国能源结构调整、缓解石油供需矛盾具冇重要意义。促进甲醇下游产品的开发是拉动甲醇需求的关键环节,应该大力发展甲醇燃料和甲醇制烯坯项口,以天然气制甲醇装置的大型化是发展口标。甲醇是极为重要的有机化工原料和洁净液体燃料,是碳一化学的基础产品。甲醇化工是化淫工业的一个重要分子。固体原料煤炭、液体原料右脑油和渣油、气体原料天然气和油田气或煤层气等经部分氧化法或蒸汽转化法制得合成气。合成气的主要成分是一氧化碳和氢气。一氧化碳
2、加氢可制得甲醇,这就构成了碳一化学的基木原料。现在甲醇已成为新一代能源的重要起始原料,生产一•系列深度加工产品,并成为碳一化学的突破口。在世界能源紧缺以及清洁能源、环保需求的情况下,以天然气为原料生产卬醇,卬醇就冇希望成为替代右油的清洁燃料、化工原料和二次能源。本次设计采用天然气为原料,气化得合成气,再经净化压缩,合成粗甲醇,再经精憎工段精憎得到精甲醇。木次甲醇合成工段和精憎工段的设计参照与实际项目。关键词:甲醇,合成,精憾480kt/athickmethanolsynthesis,distillations
3、ectioninthepreliminarydesignstageprocessdesignAuthor:HongZhaoTutor:YingZhangAbstractMethanolproductionfromnaturalgastechnologyismature,lowcost,onChina'senergystructureadjustment,easethecontradictionbetweenoilsupplyanddemandisimportant.Promotethedevelopmento
4、fdownstreamproductsofmethanoldemandisdrivingthekeytoadrunk,itshouldbetodevelopmethanolfiielandadrnnkolefinsprojectstolarge-scalecoal-basedmethanolplantisthedevelopmentgoals.Methanolisaveryimportantorganicchemicalrawmaterialsandcleanliquidfuels,isthebasicpro
5、ductsofOne-CarbonChemistry.Methanolisachemicalmoleculeisanimportantchemicalindustry.Solidrawmaterialscoal,naphthaandresiduefluidrawmaterials,rawmaterials,naturalgasandoilfieldgasorcoalbedmethanegasbypartialoxidationorsteamreformingpreparesyngas.Themaincompo
6、nentsofsynthesisgasofcarbonmonoxideandhydrogen.Methanolandcarbonmonoxidehydrogenationcanbeobtained,whichconstitutestheOne-CarbonChemistryrawmaterials.Methanolisnowanewgenerationofenergyhasbecomeanimportantstartingmaterials,producesarangeofdccp-proccssingpro
7、ducts,andOne-CarbonChemistrybreakthrough.Energyshortageintheworld,andcleanenergy,environmentalprotection,thecaseofdemand,withnaturalgasasrawmaterialstoproducemethanol,methanol,thereishopeforacleanfuelalternativetooil,chemicalrawmaterialsandsecondaryenergy.T
8、hedesignusednaturalgasasrawmaterials,gasificationtoobtainsynthesisgas.Thesynthesisgasisfurtherpurifiedandcompressed,andthenisusedtosynthesize.Atlast,crudemethanolviadistillationsectiontoberefinedtogetr