Status of the anti-surge valve when the cyclic hydrogen compressor is shut down
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When the cyclic hydrogen compressor is operating normally, the anti-surge valve is fully closed. In the event of an emergency shutdown, is it fully open or still fully closed? I found posts stating both possibilities; could some expert help me figure this out? Is it fully open before startup, and then slowly closed during startup?
First, a flowchart should be presented, and then discussions should be carried out based on it to ensure targeted approaches. Some anti-surge valves recycle the fluid, being known as recirculation valves, while others discharge it directly. The conditions for setting up chains also vary. It is best to follow the equipment user manual or the company’s operating procedures. It is recommended to understand its function by grasping the principles of the process; one should not rely solely on online searches. Such searches can only serve as a reference and should not be followed step by step. For reference.
Is it a centrifugal compressor? Before starting, the anti-surge valve is fully open; after startup, during the load increase process, the anti-surge valve gradually closes