Rich gas compressor is an important unit of FCCU.Woodward 505 controller is the special equipment for speed control,depending on the application introduced in conjunction of Woodward 505 regulator and ESD system,achieve control of the rotational speed of the turbine to drive the centrifugal petroleum gas compressor.%在催化裂化装置中富气压缩机组是重要机组。Woodward 505控制器为转速控制专用设备，根据实际应用介绍使用Woodward 505调节器与ESD系统的结合，实现控制汽轮机转速从而驱动离心式富气压缩机[1]。
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