凝析油中正构烷烃的分离及优化利用  

Separation and Optimizing Utilization of Normal Paraffin in the Condensate Oil

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

出　　处：《石油与天然气化工》2008年第6期462-465,共4页Chemical engineering of oil & gas

基　　金：国家重点基础研究发展计划"973"资助项目(2006CB202501);华东理工大学优秀青年教师科研基金(YA0157105)

摘　　要：为了优化利用凝析油资源,对不同族烃类分子实现物尽其用,采用5A分子筛吸附剂吸附分离凝析油中的非正构烃和正构烷烃。在固定床吸附分离装置上测定了凝析油中总正构烷烃和各正构烷烃的吸附穿透曲线,并对吸余油和脱附油的性能进行了评价。吸余油和脱附油的收率约为对半分,吸余油的芳烃潜含量比凝析油提高12.9个百分点。模拟计算结果表明,吸余油的研究法辛烷值比凝析油提高约27个单位,可作为高辛烷值汽油调和组分;脱附油作为蒸汽裂解制乙烯原料,与凝析油相比,在相同的工艺条件下乙烯收率可提高6.5个百分点。通过吸附分离的分子水平管理,可显著提高凝析油资源的利用效率。In order to improve the utilization efficiency of condensate oil and use the different structure group hydrocarbons molecules properly, the technology of separating normal paraffin and non-normal paraffin from the condensate oil through the adsorption process using 5A molecular sieves is studied. The adsorption break-through curves of the total and individual normal paraffin in the condensate oil are measured in a fixed bed adsorption-separation unit. The performances of desorption oil and raffinare oil are evaluated. The yields of raffinate oil and desorption oil are approximately the same. The potential aromatic content of the raffinate oil rose by 12.9 percent compared to that of the condensate oil. The simulation calculation indicates that research octane number of the raffinate oil increased 27 units compared to that of the condensate oil, so it is more suitable to be used as the blending component of the high octane gasoline. As the steam cracking feedstocks, the ethylene yield of the desorption oil increased 6.5 percentage compared to the condensate oil in the similar conditions. The utilization efficiency of condensate oil can be improved evidently through the molecular management of the adsorption separation.

关 键 词：凝析油 正构烷烃 吸附 蒸汽裂解 催化重整 

分 类 号：TE624[石油与天然气工程—油气加工工程]