Pressure Swing Adsorption (PSA) is a process that separates the
impurities from the gas mixture to produce gas products such as hydrogen, oxygen,
or nitrogen. PSA is typically available in Refineries, Petrochemical (PDH),
Air Separation Units (ASU), ethylene plants, and ethanol production
facilities. The gas separation takes place through a series of fixed bed
absorbers with forward and reverses flows to switch the gases between parallel
vessels by control valves. One of the biggest challenges for control valves
in PSA is that they are expected to cycle as often as every few minutes while
providing tight, bi-directional shut-off. Failure of control valves can
directly affect gas separation and product purity, as well as increase the
maintenance cost needed for common failures such as shaft breakage, poor
valve-actuator-positioner linkages, and valve leaking issue.

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What’s your opportunity?

·        
Maximize PSA productivity and gas product purity with
minimum maintenance needs on the control valves

·        
Predictive Maintenance by using Smart Positioner
(linkage-less design) which has Performance Diagnostic features to carry
out time-series online monitoring of valve health and performance