Operational Monitoring and Control Strategy

Overview of Monitoring and Control Functions

During operation of the wet gas scrubber system, a comprehensive monitoring and control strategy is implemented to ensure reliable performance, process stability, and equipment protection. The main control functions include pump monitoring, level control, and temperature monitoring, all of which are supervised by dedicated instrumentation and interlocks.

Pump Monitoring

The scrubber circulation pump is continuously monitored to verify correct hydraulic performance and to protect the system against abnormal operating conditions. A flow switch is installed to monitor the circulation flow. An increase in flow may indicate a worn or damaged spray nozzle, whereas a reduced flow typically indicates a restriction on the pump discharge side, such as fouling or partial blockage. If no flow is detected while the pump is running, the system will automatically stop the pump to prevent damage. The applicable flow limits and alarm thresholds are determined during commissioning. In addition, a pressure transmitter monitors the discharge pressure of the recirculation pump. Elevated pressure values can indicate nozzle clogging or downstream restrictions, while reduced pressure generally points to worn or broken nozzles. Pressure limits and setpoints are likewise established during commissioning to match the actual system characteristics.

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