2023年第6期广东化工第50卷总第488期www.gdchem.com·31·高温全馏分煤焦油/供氢溶剂加氢精制反应研究刘志学，张凯，王骁*，张楠(陕煤集团榆林化学有限责任公司，陕西榆林719302)[摘要]高温煤焦油(HighTemperatureCoalTar，HTCT)是以生产焦炭为目的的热解产物，其干馏温度一般为900~1000℃，密度一般大于1g/cm3主要由芳香族化合物组成，因其与中低温煤焦油相比化学组成更加复杂导致其精细化难度增加，再加上传统HTCT深加工方式所存在的“三高”问题，使得高温煤焦油精细化被扣上了“高污染”的帽子。本实验使用采用煤焦油轻质馏分油作为供氢溶剂油进行加氢精制反应其中煤焦油：供氢溶剂油体积比1∶2；在反应压力15.7MPa；一反床层平均温度为296℃。二反床层的平均温度为348℃，体积空速为0.4h-1(相对于进料)。二反床层的密度从1098.0Kg/m3降至980.7Kg/m3。硫和氮的含量分别从4000µg/g和11565µg/g/g降至253µg/g和1813.2µg/g。脱硫率和脱氮率分别达到93.7%和84.3%。总金属去除率达到90%以上。[关键词]高温煤焦油；供氢溶剂；加氢反应；固定床；轻质化[中图分类号]TQ536[文献标识码]A[文章编号]1007-1865(2023)06-0031-04StudyonHighTemperatureFullFractionCoalTar/HydrogenDonorSolventHydrofiningReactionLiuZhixue,ZhangKai,WangXiao*,ZhangNan(SHCCIGYulinChemicalCo.,Ltd.,Yulin719302,China)Abstract:HighTemperatureCoalTar(HTCT)isapyrolysisproductforthepurposeofcokeproduction.ThepyrolysisTemperatureisgenerally900~1000℃,thedensityisgenerallygreaterthan1g/cm3,anditismainlycomposedofaromaticcompounds.Comparedwithmedium-lowtemperaturecoaltar,itschemicalcompositionismorecomplex,whichincreasesthedifficultyofitsrefinement.Coupledwiththe“threehigh”problemsexistinginthetraditionalHTCTdeepprocessingmethod,high-temperaturecoaltarrefinementislabeledas“highpollution”.Inthisexperiment,coaltarlightdistillateoilwasusedashydrogensolventoilforhydrorefiningreaction.Thevolumeratioofcoaltartohydrogensolventoilwas1∶2.Thereactionpressureis15.7MPa;Theaveragetemperatureofthebedis296℃.Theaveragetemperatureofthesecondaryreactionbedwas348℃,andthevolumetricspacevelocitywas0.4h-1(relativetothefeed).Thedensityofthesecondaryreactionbeddecreasedfrom1098.0Kg/m3to980.7Kg/m3.Theconten...
