催化裂化轻汽油萃取蒸馏脱硫实验研究  

STUDY ON DESULFURIZATION OF FCC LIGHT GASOLINE BY EXTRACTIVE DISTILLATION

作　　者：唐晓东[1,2] 温晓红[2] 王瑞[3] 聂通元 

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室 [2]西南石油大学化学化工学院 [3]中国石油四川石化有限责任公司 [4]宁波中一石化科技有限公司

出　　处：《石油炼制与化工》2013年第12期77-80,共4页Petroleum Processing and Petrochemicals

摘　　要：采用萃取蒸馏法对FCC轻汽油进行脱硫实验,对脱硫溶剂和脱硫工艺条件进行评选。结果表明:最佳脱硫溶剂为TSJ,在蒸馏级数为2、剂油体积比为0.4、FCC轻汽油进料空速为1.5h-1的条件下,FCC轻汽油A的硫质量分数从114μg/g降至48.2μg/g,脱硫率为57.72%,收率为99.20%,达到国Ⅳ排放标准(汽油硫质量分数不大于50μg/g);用N2对TSJ富液再生、脱硫循环5次后,FCC轻汽油A的脱硫率基本保持不变。TSJ对原料的适应性良好,对多种FCC轻汽油进行萃取蒸馏脱硫实验,都可得到较高的脱硫率和收率。Desulfurization tests of FCC light gasoline by extractive distillation were carried out. Optimum desulfurization solvent and the process conditions were selected. Results show that self-made TSJ is the optimum desulfurization solvent. Under the conditions of 2-stages distillation, a TSJ/FCC light gasoline volume ratio of 0.4 and a FCC light gasoline space velocity of 1.5 h-1 , the sulfur content of treated FCC light gasoline A is dropped from 114 μg/g to 48.2 μg/g, the desulfurization rate is 57.72X and the yield reaches 99.20~, meeting the sulfur content of National lV emission standard for gasolineCg 50 gg/g）. The sulfur-rich solvent TS.I can be regenerated by Nz tripping. After 5 times of re generation and desulfurization, the desulfurization rate of FCC light gasoline A is nearly unchanged. Desulfurization of several FCC light gasolines by extractive distillation using TSJ was investigated and high desulfurization rate and high yield can be obtained.

关 键 词：FCC轻汽油 脱硫 萃取蒸馏 萃取 蒸馏 

分 类 号：TE624[石油与天然气工程—油气加工工程]