炼化企业压减重芳烃柴油的工业技术实践  

INDUSTRIAL TECHNOLOGY PRACTICE OF REDUCING DIESEL CONTAINING HEAVYAROMATIC HYDROCARBON IN REFINING ENTERPRISES

作　　者：李桂军 刘晓华[2] 周晓龙 Li Guijun;Liu Xiaohua;Zhou Xiaolong(School of Resources and Environmental Engineering,East China University of Science and Technology,Shanghai 200237;SINOPEC Anqing Company)

机构地区：[1]华东理工大学资源与环境工程学院,上海200237 [2]中国石化安庆分公司

出　　处：《石油炼制与化工》2025年第4期64-69,共6页Petroleum Processing and Petrochemicals

摘　　要：针对炼化企业重芳烃柴油产量大、柴汽比高、车用柴油占比低、十六烷指数小等问题,采用加氢精制与催化裂化相组合的LTAG工艺,将重芳烃柴油转化为汽油;采用RLG技术,将柴油馏分中的芳烃转化为高辛烷值汽油组分,进一步提高了柴油转化率和汽油产品品质;采用RTC装置第二提升管反应器回炼RLG柴油,将重芳烃柴油深度转化为轻质芳烃,拓展了轻质芳烃的产业链。结果表明:经LTAG改造后,企业柴汽比从1.18下降至0.95;RLG装置投产后,柴汽比进一步降至0.74;RTC第二提升管反应器回炼RLG柴油后,柴汽比降至0.42。经济效益核算结果表明,应用RTC+RLG+芳烃抽提组合技术后,企业压减了重芳烃柴油产量,增产了汽油、芳烃、液化气等高价值产品,每月增加经济效益约5822.41万元。In view of the problems such as large output of heavy aromatics diesel,high ratio of fuel to gasoline,low proportion of vehicle diesel and low cetane index,LTAG process combining hydrofining and catalytic cracking was used to convert heavy aromatics diesel into gasoline.RLG technology was used to convert aromatics in diesel distillate into high-octane gasoline components,which further improved the conversion rate of diesel and the quality of gasoline products.RLG diesel oil is smelted in the second riser reactor of RTC unit,and heavy aromatics diesel oil is deeply transformed into light aromatics,and the industry chain of light aromatics is expanded.The results show that the ratio of fuel to gasoline decreases from 1.18 to 0.95 after the transformation of LTAG.After the RLG unit is put into operation,the ratio of fuel to gasoline is further reduced to 0.74.After the RLG diesel is reheated in the second riser reactor of RTC,the fuel to gas ratio is reduced to 0.42.The results of economic benefit calculation show that the application of“RTC+RLG+Aromatics Extraction”combination technology reduces the production of heavy aromatics diesel oil,increases the production of gasoline,aromatics,LPG gas and other high-value products,and increases the economic benefit of about 58.2241 million yuan per month.

关 键 词：RLG RTC 重芳烃 柴汽比 

分 类 号：TE6[石油与天然气工程—油气加工工程]