催化裂化柴油加氢转化馏分利用方案研究

中国石化大连(抚顺)石油化工研究院开发了以催化裂化柴油为原料生产高辛烷值汽油调合组分新工艺技术（FD2G技术）。针对催化裂化柴油加氢改质产品，通过分析其组分的烃类组成，分别加工利用，对于改善产品结构和提高市场竞争力十分有益。研究结果表明：加工高芳烃催化裂化柴油时，汽油产品芳烃含量高，辛烷值高，其中C6~C8芳烃富集的窄馏分可以作为芳烃抽提装置原料生产化工产品；加工低芳烃含量的催化裂化柴油时，汽油产品中芳烃含量低，辛烷值偏低，可将富集大量环烷烃的窄馏分作为重整装置原料，富含芳烃的窄馏分作为高辛烷值汽油调合组分。

STUDY ON UTILIZATION OF NARROW FRACTIONS OF LCO HYDROCONVERSION PRODUCTS

new process technology (FD2G) was developed by SINOPEC Dalian(Fushun) Research Institute of Petroleum & Petrochemicals for producing high octane gasoline blending component using hydrotreated LCO as feed. Based on the composition analysis of LCO hydro-upgrading products, the solutions were raised for the best utilization of the products to strengthen the market competitiveness. The results showed that when processing LCO with high aromatic content, the obtained gasoline product possessed of high aromatic content and high octane number, its narrow fraction enriched in C6~C8 aromatics could be used as feed of aromatic extraction process. When processing hydrotreated LCO with low aromatic content, the gasoline product contained low content of aromatics and low octane number but its narrow fraction, rich in naphthenic hydrocarbons, could be used as feed for the reformer, and the remaining narrow fraction with high aromatic content could be used as a high octane gasoline blending component.