关键词: C₅组分, C₆组分, 异构化, 吸附分离, 正异构分离, 乙烯裂解, 炼化一体化, 效益估算

Abstract: Two schemes of producing isomerized oil with saturated C₅ and C₆ components and refining petrochemical integration combined process are introduced respectively. Taking the feed of C₅ and C₆ components in a 300,000 TPY isomerization unit as an example, several processing processes are analyzed and compared from the aspects of product distribution, energy consumption and economy. The results show that the saturated C₅ and C₆ can be used as feedstocks for isomerization of gasoline and the cost of isomerization scheme with adsorption separation is slightly lower than that of other isomerization schemes. When the price difference between ethylene, propylene and gasoline reaches more than 3,000 yuan per ton, the income of refining petrochemical integration process is better than that of isomerization of gasoline. When the price difference reaches to more than 4,000 yuan per ton, the income of direct cracking scheme is better. In the integrated refining and chemical plant, it is still necessary to consider using C₅ and C₆ components as feedstocks. After adsorption separation of saturated C₅ and C₆ components, the isomers as gasoline and normal structure as ethylene cracking feedstocks are conducive to improve the comprehensive income of the plant.

Key words: C₅ component, C₆ component, isomerization, adsorption separation, normal-isomers separation, ethylene cracking, refining petrochemical integration, cost estimation