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主要介绍可编程序控制器（PLC）在流化催化裂化（TCC）反应器、再生器自动保护联锁控制系统中的应用，分析了其工艺流程及控制过程，并结合控制要求从系统配置、工作逻辑、联锁原理、程序编制及其重要性等方面作了简要说明。
This paper mainly introduces the application of programmable logic controller (PLC) in interlocking control system of TCC reactor and regenerator automatic protection, analyzes its process flow and control process, combined with the control requirements from system configuration, Work logic, interlocking principle, programming and its importance and made a brief description.