关键词: C₅/C₆ 异构化, 超强酸异构化催化剂, Par-Isom技术, 清洁汽油, 辛烷值

Abstract: In order to upgrade the quality of gasoline pool to meet the China Ⅵ emission standard for motor gasoline, PetroChina Qingyang Petrochemical Company selected UOP，s Par-Isom C₅/C₆ isomerization process and " deisopentane column and isomerization reaction" process to produce high octane number C₅/C₆ isoalkanes from light naphtha and raffinate. The product had low density without olefins, aromatics and sulfur. The results of industrial application showed that the product yield of isomerized gasoline was 98.42%, the research octane number reached 83.3, 7.3 units higher than feed, sulfur mass fraction was 0.34 μg/g, RVP was 110-120 kPa, all quality indexes of the product were qualified, reached design index of the unit. The octane number of gasoline pool was increased, and the distribution of octane number of gasoline pool was optimized.

Key words: C₅/C₆ isomerization, super-acid isomerization catalyst, Par-Isom technology, clean gasoline, octane number