重油加氢装置长周期运行分析及优化措施

ANALYSIS AND OPTIMIZATION OF LONG-TERM OPERATION OF HEAVY OIL HYDROGENATION UNIT

中国石化安庆分公司2.0 Mt a重油加氢装置采用中国石化石油化工科学研究院(简称石科院)研发的RHT技术,由中国石化工程建设公司设计,目前已运行至第5个周期,均采用石科院开发的RHT系列渣油加氢催化剂。装置运行结果表明:RHT催化剂的脱硫、脱氮和降残炭等性能均能满足要求;在降低催化剂堆密度的前提下,催化剂活性和稳定性进一步提升。为了延长重油加氢装置生产运行周期,采取多项措施进行生产优化,以延缓反应器压降上升速率,充分利用催化剂性能,确保装置长周期安全平稳运行。

The 2.0 Mt a heavy oil hydrotreating unit of SINOPEC Anqing company was based on the RHT technology developed by SINOPEC Research Institute of Petroleum Processing(RIPP)and designed by SINOPEC Engineering Incorporation.At present,the unit has been running to the 5th cycle,all using the RHT series residue hydrotreating(RHT)catalysts developed by RIPP.The operation results of the unit showed that the performance of RHT catalysts could meet the requirements of desulfurization and denitrification in all five production cycles.The activity and stability of the catalyst could be further improved on the premise of reducing the bulk density of the catalyst.In order to prolong the operation period of the hydrotreating unit,a number of measures were taken to optimize the unit operation so as to reduce the pressure drop rise rate of the reactor,to make full use of the performance of catalysts and to ensure the long-term safe and stable operation of the unit.