LTAG技术在重油催化裂化装置的工业应用

发布时间：2018-04-17 03:19

本文选题：LTAG技术 + 催化裂化　；参考：《石油炼制与化工》2017年11期

【摘要】：催化裂化柴油(LCO)十六烷值低、芳烃含量高,性质较差。随着柴油需求持续低迷,压减LCO成为各炼油厂主要的攻关方向。LTAG技术是中国石化石油化工科学研究院近年开发的将催化裂化劣质柴油转化为高辛烷值汽油或轻质芳烃的新技术。该技术利用加氢单元和催化裂化单元组合,将LCO馏分先加氢再进行催化裂化,通过设计加氢LCO转化区同时优化匹配加氢和催化裂化的工艺参数等,实现最大化生产高辛烷值汽油。为压减柴油产量、多产高辛烷值汽油组分,中国石化北京燕山分公司2.0 Mt/a重油催化裂化装置采用LTAG技术进行改造,加氢单元利旧原润滑油加氢处理装置。LTAG技术投用后,汽油收率由43.2%提高到51.8%,柴油收率由20.5%降低至5.9%,液化气收率由17.5%提高到21.5%,干气收率上升0.9百分点,油浆收率增加1.5百分点,焦炭产率降低0.4百分点;汽油中苯质量分数由1.00%提高到1.65%,芳烃质量分数由34.11%提高至38.36%,研究法辛烷值提高2个单位;大幅度压减了该公司的催化裂化柴油库存,缓解了柴油出厂困难的问题。
[Abstract]:Catalytic cracking diesel oil (LCO) has low cetane number, high aromatics content and poor properties.With the continuous low demand for diesel oil, LCO reduction is the main key point in various refineries. LTAG technology is a new technology developed by Sinopec Research Institute of Petroleum and Chemical Engineering in recent years to convert FCC low-quality diesel to high-octane gasoline or light aromatics.Using the combination of hydrogenation unit and catalytic cracking unit, the LCO fraction was hydrogenated and then cracked, and the matching process parameters of hydrogenation and catalytic cracking were optimized by designing the hydrogenation LCO conversion zone at the same time.Maximize the production of high octane gasoline.In order to reduce diesel oil production and produce more high octane gasoline components, the 2. 0 Mt/a heavy oil catalytic cracking unit of Beijing Yanshan Branch of Sinopec was retrofitted with LTAG technology, and the hydrotreating unit of lube oil. LTAG technology was put into use.Gasoline yield increased from 43.2% to 51.8%, diesel yield decreased from 20.5% to 5.9%, LPG yield increased from 17.5% to 21.5%, dry gas yield increased 0.9%, slurry yield increased 1.5%, coke yield decreased 0.4%.The content of benzene in gasoline increased from 1.00% to 1.65%, the mass fraction of aromatics increased from 34.11% to 38.36 units, and the octane number of research method increased by 2 units.
【作者单位】：中国石化北京燕山分公司炼油事业部;
【分类号】：TE624

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