第二代LTAG技术开发  

Development and Industrial Application of Second-Generation LTAG Technology

作　　者：唐津莲[1] 龚剑洪[1] 习远兵[1] 鞠雪艳[1] 张久顺[1] TANG Jinlian;GONG Jianhong;XI Yuanbing;JU Xueyan;ZHANG Jiushun(Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China)

机构地区：[1]中国石化石油化工科学研究院,北京100083

出　　处：《石油学报（石油加工）》2022年第2期227-233,共7页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家重点研发计划项目(2017YFB0306503)基金资助。

摘　　要：为进一步提高汽油辛烷值并降低氢耗,通过色-质联用技术与实沸点切割分析相结合的方法研究催化裂化轻循环油(LCO)轻、重馏分切割方案,并进一步考察LCO不同馏分的加氢和裂化性能;开发了LCO轻、重馏分切割后LCO轻馏分直接催化裂化回炼而LCO重馏分定向加氢后再回炼的第二代LTAG技术(LTAG-Ⅱ)。工业应用结果表明:第二代LTAG技术LCO轻馏分与加氢后的LCO重馏分催化裂化回炼的表观转化率达到74.12%,汽油+液化气表观选择性达到88.00%;与LCO全馏分加氢回炼的第一代LTAG技术相比,汽油研究法辛烷值(RON)、马达法辛烷值(MON)分别提高0.6、0.7个单位,且LCO加氢的氢耗降低22.70%,经济效益显著。To further improve gasoline octane number and reduce hydrogen consumption,changing cut points of catalytic cracking light cycle oil(LCO)light fraction and heavy fraction was studied through combination of gas chromatography-mass spectrometry(GC-MS)and real boiling point analysis.Both hydrogenation performance and cracking activity of different LCO fractions were investigated.Based on the above work,the second generation LTAG(LTAG-Ⅱ)technology was developed.For LTAG-Ⅱprocess,LCO light fraction is directly recycled for further catalytic cracking.However,for LCO heavy fraction,it will be further reprocessed after selective hydrogenation.LTAG-Ⅱcommercial application shows,for LCO light fraction and hydrocracked heavy fractions,catalytic cracking apparent conversion can be 74.12%;gasoline and liquefied petroleum gas(LPG)selectivity can be 88.00%.Compared with the first generation LTAG technology(i.e.,LCO full fraction hydrotreating),gasoline research octane number(RON)and motor octane number(MON)can increase 0.6 and 0.7,respectively.In addition,hydrogen consumption ratio can be reduced 22.70%.Therefore,LTAG-Ⅱprocess has demonstrated significant economic benefit.

关 键 词：第二代LTAG技术(LTAG-Ⅱ) 氢耗 辛烷值 轻循环油 

分 类 号：TE624[石油与天然气工程—油气加工工程]