Processing & Handling :: Liquid, Gas and Air Handling :: Compressors
November 1, 2012
Anti-surge Valves for Dynamic Compressors
Follow this guidance to improve the selection and sizing of anti-surge valves for axial and centrifugal compressors
Amin Almasi WorleyParsons Services Pty. Ltd.
One of the most significant limitations on the operation of dynamic compressors (axial and centrifugal compressors) is the low-flow limit known as “surge”. A sudden valve closing, such as for emergency shutdowns or for a suction/discharge valve, presents significant challenges to anti-surge valve sizing and selection. Anti-surge valve requirements depend to a large degree on the compressor type, the compression system arrangement, and particularly the volume of the discharge piping downstream of the compressor. Important aspects of anti-surge valve sizing and selection for plants in the chemical process industries (CPI), as well as examples, are discussed in this article....
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