摘要
采用催化剂级配技术,对中国石油四川石化有限责任公司 2.7 Mt/a 加氢裂化装置的两个反应器进行改造;并对调整原 料性质及操作条件(尽量接近于第一周期标定工况数据)后的第二周期应用情况进行了催化剂活性、产品分布、产品质量、 操作安全性等对比分析。实验结果表明,通过催化剂活性级配和加氢选择性级配,实现了多环芳烃的进一步转化,最大程 度保留链烷烃在尾油组分中,与第一周期相比,喷气燃料烟点提高 3.0 mm,尾油芳烃指数降低 6.5 个单位;第二周期转化 率(>282 ℃)控制在 79%、尾油切割点为 252 ℃工况下,重石脑油与喷气燃料总收率可达 60.9%,实现多产重石脑油与喷气 燃料的目标;降低了反应器压降和循环氢压缩机的能耗,节约了投资成本。
Renovating two reactors of 2.7 Mt/a hydrocracking unit of PetroChina Sichuan Petrochemical Co.,Ltd. using catalyst grading technology. Comparative analysis of catalyst activity,product distribution,product quality,and operational safety was carried out for the application of the second cycle after adjusting the properties of the raw materials and operating conditions(as close as possible to the calibration data of the first cycle). The experimental results show that further conversion of polycyclic aromatic hydrocarbons is achieved by catalyst active grading and hydrogenation selective grading,and the maximum retained paraffin is in the tail oil component. Compared with the first cycle,the jet fuel smoke point is improved 3.0 mm,the tail oil aromatic hydrocarbon index is reduced by 6.5 units. The second cycle conversion rate(>282 ℃) is controlled at 79%,and the tail oil cutting point is 252 ℃,the total yield of heavy naphtha and jet fuel can reach 60.9%,achieving the goal of producing heavy naphtha and jet fuel. The reactor pressure drop and the energy consumption of the circulating hydrogen compressor are reduced,and investment costs are saved.
作者
童军
黎臣麟
武宝平
薛敬祥
罗亮
陆超
Tong Jun;Li Chenlin;Wu Baoping;Xue Jingxiang;Luo Liang;Lu Chao(PetroChina Sichuan Petrochemical Company,Chengdu Sichuan 611930,China)
出处
《石油化工》
CAS
CSCD
北大核心
2019年第11期1174-1179,共6页
Petrochemical Technology
关键词
加氢裂化
催化剂级配
烟点
hydrocracking
catalysts gradation
smoke point
