Compression
Anti-Surge Control
A fast-acting compressor protection function that maintains sufficient flow through a centrifugal compressor by opening recycle when operation approaches the surge region.
Why it matters
Surge can damage compressors and destabilize the process; anti-surge behavior affects startup, shutdown and rapid process disturbances.
Related technical topics
Controls & Protection · Advanced
Compressor Anti-Surge Control
Understand why surge is damaging, how an anti-surge controller protects the compressor and why recycle-valve response, instrumentation quality and operating margin matter.
Rotating Equipment · Intermediate
Centrifugal Compressors in LNG Service
Understand the operating principles, performance limits, major components, auxiliaries and protection philosophy of centrifugal compressors used in LNG and gas-processing facilities.
Rotating Equipment · Intermediate
Boil-Off Gas (BOG) Compressors
Study the role of BOG compressors in controlling LNG tank and transfer-system vapor generation while maintaining a stable vapor-handling path.