关键词: 再生器, 取热调节, 在线除垢, 管线磨损, 内衬

Abstract: Addressing issues such as the deactivation of regenerated adsorbents and the clogging of discharge pipelines in the S Zorb unit of a petrochemical company, this study focuses on calculating and analyzing the impact of water on the adsorbent regeneration process and the necessary improvement measures based on the operating principles of the unit's regeneration system. The results indicate that the partial pressure of water vapor in the regeneration system is the primary factor leading to the formation of zinc silicate on the adsorbents, which subsequently causes their deactivation. In this regeneration system, the partial pressure of water vapor required for the initial formation of zinc silicate on the adsorbents is 3 kPa, and the higher the partial pressure of water vapor, the faster the rate of zinc silicate formation. By optimizing the heat removal adjustment method during regeneration, reducing the introduction of water in the primary regeneration air, and adding online descaling equipment, the service life of the adsorbents can be extended, the problem of material discharging clogging in the regenerator can be solved, and long-term stable operation of the regeneration system can be achieved. Furthermore, analysis reveals that the main reason for the wear and leakage of the transfer pipeline is the dilute-phase conveyance of adsorbents within the pipeline and the absence of internal lining when the pipeline is shut down. To extend the service life of the pipeline, measures such as increasing the differential pressure between the two vessels, reducing the linear velocity inside the pipeline, and adding internal lining can be implemented.

Key words: regenerator, heat adjustment, online descaling, pipeline wear, lining