渣油加氢装置掺炼溶剂脱沥青油的工业实践

INDUSTRIAL PRACTICE OF BLENDING DEASPHALTENE OIL IN FEEDSTOCKS OF RHT UNIT

介绍了中国石化九江分公司1.7 Mt/a渣油加氢装置掺炼溶剂脱沥青油(简称DAO)的工业实践情况,结合掺炼前后的主要操作参数、原料油及产品性质、杂质脱除率等,对掺炼DAO后装置的运行情况进行分析。结果表明,掺炼DAO可改善渣油加氢原料性质,提高杂质脱除率和降低床层压降,对延长装置运行周期有一定积极作用,同时改善催化裂化原料性质,提高公司整体经济效益。

The industrial practice of blending deasphaltene oil(DAO)in the feedstocks of 1.7 Mt/a RHT unit was introduced.The operation parameters,feedstocks and product properties,and impurity removal rates were compared before and after blending DAO.The results showed that the properties of feedstocks and the impurity removal rates were improved,while the reactor pressure drop was decreased after blending DAO.The addition of DAO plays an active role for long-term cycle length due to the improved FCC feedstocks properties.The overall economic benefits of the company are also increased.