DCC装置长周期运行工艺核算及技术分析

PROCESS ACCOUNTING AND TECHNICAL ANALYSIS OF DCC UNIT IN LONG-TERM OPERATION

中海油东方石化有限责任公司(简称东方石化)增强型催化裂解(DCC-plus)装置的第二个生产运行周期内,装置原料性质变化频繁、操作工况调整较大,基于原料性质和催化剂性质,通过定期开展工艺核算及技术分析,调控原料预热温度、蒸汽注入量、反应苛刻度、重点部位线速,稳定油浆系统操作参数,优化设备管理等,确保该装置在第二运行周期内未发生非计划停工情况,并成功实现了DCC-plus装置检修周期由3年延长至4年的突破。

During the second operation period of the deep catalytic cracking-plus(DCC-plus)unit of Dongfang Petrochemical Co.,Ltd.,the properties of raw materials of the unit changed frequently and the operating conditions was adjusted greatly.Based on the properties of raw materials and catalysts,through regular process accounting and technical analysis,the preheating temperature of raw materials,steam injection,reaction severity and line speed of key parts were regulated,the operation parameters of the slurry system were stabilized,and the equipment management was optimized,etc.,which ensure that no unplanned shutdowns occured during the second operation period of the unit.The maintenance period of DCC-plus unit was successfully extended from 3 years to 4 years.