4.0Mt/a蜡油加氢裂化装置的运行优化  

OPERATION OPTIMIZATION OF A 4.0Mt/a VGO HYDROCRACKING UNIT

作　　者：郭振刚 Guo Zhengang(Zhejiang Petrochemical Co.Ltd.,Zhoushan,Zhejiang 316200)

机构地区：[1]浙江石油化工有限公司,浙江舟山316200

出　　处：《石油炼制与化工》2021年第6期57-63,共7页Petroleum Processing and Petrochemicals

摘　　要：浙江石油化工有限公司4.0Mt/a蜡油加氢裂化装置采用UOP公司的Unicracking TM加氢裂化技术,级配装填加氢精制剂HYT-6219与加氢裂化剂HC-185LT,装置开工后一直维持95%以上负荷稳定运行。通过对装置运行优化研究及总结,拓宽加工原料范围,掺炼催化裂化柴油和焦化柴油总量平均为57 th,掺炼催化裂化柴油和焦化柴油期间各产品质量合格,重石脑油+喷气燃料+柴油的收率增加5.17百分点;优化原料组成、改变裂化反应深度和调整分馏切割操作,柴油侧线生产出运动黏度(40℃)为4.345 mm 2 s、闪点(开口)为126℃的5号工业白油(Ⅰ)产品;优化分馏操作,喷气燃料收率由20.7%增加至26.6%,产量较设计值增加35.5 th;脱异戊烷单元生产出异戊烷质量分数达99.20%、总的戊烷质量分数为99.66%的F 0型戊烷发泡剂。通过一系列的优化运行,提高了装置产品附加值及高质产品收率,装置运行整体经济性明显提高,发挥了蜡油加氢裂化装置在炼化一体化项目中产品结构调整灵活的优势。The 4.0Mt/a VGO hydrocracking unit of Zhejiang Petrochemical Company adopted UOP’s Unicracking TM hydrocracking technology with the graded catalysts of the hydrotreating catalysts HYT-6219 and hydrocracking catalyst HC-185LT.Since the start-up,the unit has been running stably at over 95%of the load.Based on the research and summary of the unit operation optimization,the average amount of 57 t h of RFCC diesel and coker diesel was blended as feed,and all the products were qualified,the yield of(heavy naphtha+jet fuel+diesel)was increased by 5.17 percentage points.The No.5 industrial white oil(Ⅰ)with 40℃kinematic viscosity of 4.345 mm 2 s and flash point(open cup)of 126℃was produced from the diesel side line of fractionator.The yield of jet fuel was increased from 20.7%to 26.6%,and the production was increased by 35.5 t h compared with the design.The F 0 pentane foaming agent with isopentane content of 99.20%and total pentane content of 99.66%was produced on deisopentanizer.Through a series of optimized operation,the value added product and the output of the unit were improved,and the overall operation economy of the unit was significantly increased.The advantages of flexible product structure adjustment of VGO hydrocracking unit in refining and chemical integration project were achieved.

关 键 词：加氢裂化 催化裂化柴油 焦化柴油 工业白油 喷气燃料 戊烷发泡剂 

分 类 号：TE96[石油与天然气工程—石油机械设备]