关键词: 原油劣质化, 催化裂化, 原料, DAO, 产品, 效益

Abstract: Based on SINOPEC Zhenhai Refining & Chemical Company's relatively insufficient hydro treating capacity of heavy oil, FCC is more dependent on processing of low sulfur residue of crude oil to satisfy thermal balance. The heave oil side processing process optimization scheme, which uses deasphalting oil extracted from inferior unconverted oil hydrogenated by ebullated bed residue to replace low sulfur residue, resulting in a significantly reduced in the amount of low sulfur crude oil, and the crude oil quality is further improved. On the basis of meeting the demand of heat balance, by further enhancing the reaction severity of reaction, the proportion of residue feed in mixed oil decreased from 24.34% to 6.94%, the yield of LPG and gasoline increased from 60.04% to 63.47%. The adaptive matching of FCC and deterioration of crude oil is realized, and the industrial feasibility of the heavy oil processing scheme of fluidized bed residue hydrogenation combined with solvent deasphalting and catalytic cracking is verified.

Key words: crude oil deterioration, catalytic cracking, feedstock, DAO, product, benefit