Abstract: Due to the excess refining capacity and the slowdown of oil consumption, the utilization of crude oil resources has been changed from fuel oil production to oil-chemical integration, so as to enhance the competitiveness. Based on the market environment and the needs of survival and development, a detailed analysis and study on the integrated conversion scheme of oil and chemical was carried out, and an integrated model of decarbonization and full hydrogenation refining and chemical was designed. Through the comparison of investment, product distribution, technical and economic indexes, it can provide reference for the new refinery and the transformation of the existing enterprises.

Key words: oil refining transformation, technical route, chemical refinery