重芳烃高效转化生产轻芳烃技术

摘要

FCC diesel contains 60%~80%aromatics,which leads to its high density and low cetane number,so it is difficult to produce clean diesel through routine hydro-upgrading technology from FCC diesel. This paper mainly introduces a novel FD2G technology,developed by Fushun research institute of petroleum and petrochemicals,which is applied to produce light aromatics from FCC diesel containing aromatics through high efficient hydro-conversion. The optimized combination of hydroprocessing catalyst and process technology adopted by FD2G achieves the selective hydrogenation of aromatics. It can be used to convert the heavy aromatics in FCC diesel into light aromatics with high added-value,which provides an economic and effective route for processing FCC diesel containing high aromatics. The results showed that applying FD2G technology developed by SINOPEC to process FCC diesel containing high aromatics,30%~50% of good quality catalytic reforming feed with more than 50%of C6~C9 aromatics and 32%BTX could be produced,and the upgraded diesel quality was improved largely compared with that of the feed.%催化裂化柴油中富集了60%～80%的芳烃，导致催化裂化柴油密度大、十六烷值低，难以通过常规加氢改质技术来生产清洁柴油。本文主要介绍了中国石化抚顺石油化工研究院开发的一种利用富含芳烃的催化裂化柴油来生产轻芳烃的高效加氢转化 FD2G 新技术。该技术通过对加氢催化剂和工艺技术的组合优化实现了对催化裂化柴油的选择性加氢，可以将催化裂化柴油中富含的重质芳烃高效地转化为轻芳烃等高附加值的产品，为高芳烃含量的催化裂化柴油改质提供了一条经济、有效的加工途径。研究结果表明，应用催化柴油加氢转化FD2G技术加工高芳烃含量的催化柴油，可以生产30％～50％的优质催化重整原料，该馏分中 C6～C9芳烃含量超过50%，BTX含量可以达到32%，同时改质柴油质量与原料相比改善幅度较大。