Anti-surge covering for centrigfugal compressor turndown

J

Thread Starter

javad

Hi

we want to purchase centrifugal compressor. driver is steam turbine. process turn down ratio for this service is 50%. I want to know is it possible to use anti-surge line for covering 50% flow in turn-down cases?
 
Hi javad,

When the flow reduces during the turn down, the compressor operating point will move closer towards its surge line. On the control line the anti surge controller will start to open the recycle (or blow off) valve. So, in your case, if the compressor troughput will decrease during the turn down and the operating point reaches the control line, the compressor will be operated in recycle mode.
Which anti surge controller do you use for anti surge application?

regards
Andrej
 
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