关键词: S Zorb装置, 停工, 开工, 卸剂, 堵塞, 偏流, 法兰气密微漏, 阀芯碎裂

Abstract:

In March 2022, the 1.5 MM TPY S Zorb unit of SINOPEC Zhenhai Refining & Chemical Company underwent a 15-day shutdown for maintenance. During the stoppage and start working process, there were difficulties in unloading the adsorbent in the reactor R101, the hydrogen mixed raw material entering the two branch flanges of the two branch flanges of hydrogen mixed raw materials entering the heating furnace F101 were airtight and slightly leak 2.8 MPa hydrogen, and the regeneration blanking slide valve HV2634 had no adjustment function, which seriously affect the progress. By changing the adsorbent transfer process at the bottom of R101, adjusting the operation parameters of D106 in step 1.2, re-calculating the fastening torque values of the two branch flanges of F101 for hydrogen mixing raw materials, increasing the fastening torque for fastening gradually, dismantling HV2634 for inspection, analyzing HV2634 spool fracture and replacing HV2634 in time, effectively ensured the smooth stoppage and start working of the S Zorb unit, the smooth shutdown of S Zorb unit is effectively guaranteed.

Key words: S Zorb unit, shutdown, start up, remove the adsorbent, blockage, bias current, flange air tight slightly leakage, valve core broken