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1、兰州石化80万吨/年催化裂化汽油加氢脱硫装置设计摘要本设计采用了采用法国Axens公司的Prime－G+工艺进行了兰州石化公司80Mt/a催化汽油加氢脱硫装置工艺设计。随着汽车尾气排放标准的日益严格,我国对汽油的硫含量也提出了严格的限制。拟议中的国Ⅳ汽油排放标准要求汽油中硫质量分数不大于50μg/g。Prime—G+是采用固定床双催化剂的加氢脱硫技术,HR－845和HR－806新型催化剂工业应用结果表明:催化汽油脱硫效果显著，混合汽油产品总硫小于65μg/g，满足京Ⅳ汽油标准;并且汽油辛烷值损失小，具有反应压力低、温度
2、缓和、便于操作和控制等优点，催化裂化全馏分汽油脱硫率可达到98％。设计结果,(填写设计结论，如催化剂装量、反应器个数、几何尺寸等)。关键词：固定床，选择性加氢脱硫，辛烷值损失，催化剂AbstractThisdesignusesthecompanybytheFrenchAxensPrime-G+technologyofLanzhouPetrochemicalCompany80Mt/acatalyticgasolinehydrodesulfurizationunitprocessdesign,theprocessinclu
3、desafulldistillateselectivehydrogenationunit(SHU)andfractionationunit,heavygasolinehydrodesulfurization(HDS)unitintwoparts.Selectivecatalytichydrogenationanddepthofgasolinedesulfurization.Ascars75becomeincreasinglystringentemissionsstandards,China'ssulfurcontent
4、ofgasolinealsoputstrictlimits.TheproposedrequirementsⅣemissionstandardgasolinesulfurcontentingasolineisnotmorethan50μg/g.Prime-G+isadoublefixedbedcatalystforhydrodesulfurization,HR-845andHR-806newcatalystindustrialapplicationresultsshow:thecatalyticgasolinedesul
5、furizationeffectissignificant,thetotalsulfurgasolineproductmixislessthan65μg/g,ⅣgasolinetomeetinBeijingstandard;gasolineoctanelossissmallandhasalowreactionpressure,temperature,ease,easeofoperationandcontrol,etc.,thewholefractionofFCCgasolinedesulfurizationrateca
6、nreach98%.Calibrationresultsshowthat:themassfractionofsulfurprocessingunitwhen195μg/gFCCgasolinesulfurgasolineproductmixresultingmassfraction38.5μg/g,mercaptansulfurcontentof3.5lμg/g;researchoctanenumberlossofaunit,tomeetthedesign(nomorethan1.8units)requirements
7、;blendedgasolineyieldwas99.91%,higherthanthedesignvalue(99.90%);energyconsumption934.6MJ/t,lowerthanthedesignvalue(937.2MJ/t).Underfullloadoperationofthedeviceisrelativelystable,theobviouseconomicbenefits.Keywords:fixedbed,selectivehydrogenationdesulfurization,o
8、ctanenumberloss,catalysts7575目录1.文献综述11.1前言11.1.1汽车尾气对环境的影响11.1.2车用汽油性质与尾气排放的关系21.1.3欧美车用汽油标准的现状31.1.4车用汽油国三国四标准的现状41.2催化裂化汽油71.2.1催化裂化汽油中硫的存在形态与分布规律71.2.2催化裂化汽油中烯烃的分
