Pressure swing adsorption process turndown control

Details Pressure swing adsorption process turndown control Pressure swing adsorption process turndown control

1996-06-19

1998-03-31

Spitzer, Robert

Gas separation: processes

With control responsive to sensed condition

Concentration sensed

95 98, 95101, 95105, 95130, 95138, B01D 53047

Patent

active

057333599

ABSTRACT:
The flow rate of a nonadsorbed product gas stream from a multiple unit PSA plant can be reduced in response to a reduced product demand by isolating all units in the plant and inserting an idle step into the adsorption cycle immediately following bed equalization steps of the cycle. In a preferred embodiment, the duration of the idle step is inversely proportional to the percentage reduction in the product demand. To maintain the product gas purity at the desired level, minor adjustments of the idle step duration can be made following adjustment to the idle step in response to a change in product demand.

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