Abstract: The catalyst regeneration control system (CRCS) of the continuous reforming unit of Sinopec Shanghai Petrochemical Co., Ltd. (hereinafter referred to as Shanghai Petrochemical) adopts the UOP CycleMax process. Shanghai Petrochemical has two continuous reforming units, whose original control systems were both of foreign brands, and both systems had problems such as closed control programs and reliance on imported spare parts, resulting in high operation and maintenance costs, great safety risks, and limited technical upgrading. To achieve independent and controllable core control technology, Shanghai Petrochemical carried out localization revamp of the CRCS of the two continuous reforming units, adopting a brand-new Tricon system to replace the original protection PES and the Consen TSxPlus system to replace the original control PES. During the revamp, the UOP regeneration process logic was fully retained, and functional upgrades were realized, including open control programs, a Chinese-language operation interface, and batch management of valve line parameters. After the revamp, the protection PES has passed the SIL3 functional safety certification, the TSxPlus system has passed dual international information security certifications, the scan time is no more than 100 ms, the operation and maintenance cost is reduced by 35%~45%, and both the differential pressure mode and the ramp mode can be put into normal operation, which significantly improves the safety, stability, and operation and maintenance convenience of the unit. The background, scheme design, implementation process, and effect analysis of the revamp are introduced in detail, providing a reference for the localization revamp of CRCS in similar units.

Key words: continuous reforming, catalyst regeneration control system (CRCS), localization revamp, safety control, programmable electronic system (PES)