FCC汽油的膜分离法脱硫

 膜分离汽油脱硫技术在炼油和膜分离领域均是崭新的技术，利用实验室渗透汽化膜脱硫放大装置对膜法FCC汽油深度脱硫技术进行了系统研究，探讨了操作条件包括进料温度、操作压力以及进料流量对膜分离性能的影响，并通过色谱对试验得到的高硫汽油、低硫汽油产品进行了族组成和辛烷值分析。结果表明，经过膜脱硫处理，FCC汽油硫含量从750μg/g降至70μg/g左右，低硫产品的收率保持在70%以上；相对于原料汽油的辛烷值，低硫产品的辛烷值稍有增加，高硫产品的辛烷值稍有降低，总体变化不大。

DESULFURIZATION OF FCC GASOLINE BY MEMBRANE SEPARATION PROCESS

The technology of gasoline desulphurization by pervaporation is a novel technique in both oil refining and membrane separation fields. Deep desulphurization of FCC gasoline by membrane process has been conducted using the experimental apparatus. The effects of operation parameters including feed temperature, permeate pressure and the feed flow rate on the membrane performance have been investigated. The group composition and octane value of the gasoline with high and low sulfur content obtained in the experiment were analyzed by gas chromatography (GC). The experiments showed that the sulfur content of FCC gasoline was reduced from 750μg/g to 70μg/g after about 20h of continuous running and the retentate rate was above 70%. According to GC hydrocarbon group analysis, the octane numbers of retentate stream were a little higher than those of feed. However, the octane number in feed, retentate stream and permeate products changed little as a whole.