Pressure Swing Absorption

Pressure Swing Absorption (PSA) inlet valves feed hydrogen and light hydrocarbon gas into the PSA unit. This valve is either wide open or fully closed, so throttling control is not important, but it is essential that the valve opens and closes reliably when required to do so. In the PSA unit, the hydrogen is purified to >99.9% and is measured by an H2 analyzer at the plant outlet. To do this, the PSA process causes the valves to cycle every few minutes, and the pressure must be tightly controlled. 

Spartan Controls’ Pressure Swing Absorption technologies offer a solution for every application in the PSA. Our local experts will aid in the proper selection of valves with a quick stroking speed and proper seal to ensure proper control.

Fisher’s next generation control valve is a compact state of the art control valve and actuator system designed to control a wide range of processes. Reduced complexity gives fewer spare parts for easier maintenance. The compact design exists in a smaller envelope and is lighter weight with a field reversible actuator. With lower complexity and lighter weight the result is a reduced cost control valve, keeping many options such as anti-cavitation and noise reduction trims.
The FIELDVUE DVC6200 is a digital valve controller capable of operating using 4-20 mA, HART, Fieldbus, or Profibus communication protocols. The basis of its operation is the conversion of a control signal into a pneumatic output controlling valve position.