吸附富集裂解原料中的正构烷烃蒸汽裂解制乙烯效果研究  

STEAM CRACKING PERFORMANCE OF FEEDSTOCKS RICH IN NORMAL PARAFFINS GATHERED BY ADSORPTION PROCESS

作　　者：刘纪昌[1] 沈本贤[1] 

机构地区：[1]华东理工大学化学工程联合国家重点实验室,上海200237

出　　处：《石油炼制与化工》2010年第11期57-60,共4页Petroleum Processing and Petrochemicals

基　　金：国家重点基础研究发展计划"973"项目(2006CB202501)

摘　　要：研究了直馏石脑油、加氢焦化石脑油和天然气凝析油三种裂解制乙烯原料及其通过分子筛吸附分离后相应的富含正构烷烃脱附油的裂解乙烯收率,并考察了裂解反应条件对不同裂解原料的裂解性能的影响。在工业装置典型操作条件下,直馏石脑油及其吸附分离吸余油和脱附油的乙烯收率分别为29.9%,23.0%,41.1%,脱附油的乙烯收率比直馏石脑油增加11.2个百分点,脱附油的三烯总收率比石脑油增加8.6个百分点;对于加氢焦化石脑油和凝析油,其相应脱附油的裂解乙烯收率分别提高11.1和6.5个百分点。石脑油和脱附油裂解乙烯收率和丁二烯收率均随裂解出口温度的升高而增加,丙烯收率基本不随裂解出口温度的变化而改变。The ethylene yields of straight-run naphtha, hydrotreated coker naphtha, condensate oil from natural gas and their related desorption oil samples （post to 5A molecular sieve adsorption, rich in normal paraffins） were studied in order to optimize the utilization of cracking feeds and improve the ethylene yield of steam cracking process. The effect of cracking conditions on the cracking performance was also investigated. Under typical industry cracking conditions the ethylene yields of straight-run naphtha, related adsorption raffinate and desorption oil are 29.9%, 23.0% and 41.1%, respectively. It can be seen that the ethylene yield of the desorption oil increases 11.2 percentages as compared with that of naphtha. The total yields of ethylene, propylene and butadiene of desorption oil are 8.4 percentages higher than that of naphtha. For the hydrotreated coker naphtha and the condensate oil, the ethylene yields of their related desorption oils increase 11.1 and 6.5 percentages, respectively. With the increase of cracking temperature, the ethylene and butadiene yields of naphtha and related desorption oil increase notably, yet the propylene yields remain approximately constant.

关 键 词：石脑油 正构烷烃 蒸汽裂解 乙烯 

分 类 号：TQ221.211[化学工程—有机化工]