关键词: font-family:-apple-system, blinkmacsystemfont, ", font-size:14px, background-color:#FFFFFF, ">催化裂化汽油, 隔墙塔, 重石脑油, 浆态床加氢装置, 常压塔顶一级石脑油, 重整原料, 汽油苯含量

Abstract: Zhejiang Petrochemical & Chemical Co., Ltd. has optimized and adjusted the processing flow of catalytic cracking gasoline and naphtha. By utilizing existing equipment to flexibly adjust and optimize feedstock processing, the insufficient hydrogenation capacity of straight-run naphtha has been resolved, and the amount of reformer feedstock has been increased, significantly improving the flexibility of gasoline and aromatics production. Partial modifications were made to the pretreatment, light gasoline etherification, and S Zorb units, with the original gasoline distillation tower in the pretreatment unit replaced by a dividing wall column. The use of dividing wall column technology for the ternary separation of catalytic cracking gasoline allows the original tower top condensing system and bottom reboiler to be reused without modification, reducing the separation energy consumption by about 30% compared to conventional two-tower separation schemes. Through the optimization and adjustment of catalytic cracking gasoline refining and naphtha processing, the issue of high benzene content in gasoline making it difficult to reduce production has been resolved. When it is necessary to reduce gasoline production, finished gasoline can be reduced by about 38%, enhancing the hydrogenation capacity of naphtha and the flexibility of the entire plant production.

Key words: font-family:-apple-system, blinkmacsystemfont, ", font-size:14px, background-color:#FFFFFF, ">catalytic cracking gasoline, dividing wall column, heavy naphtha, slurry bed hydrotreating unit, first-stage naphtha of atmospheric distillation unit, reforming feedstock, benzene content in gasoline