Valve operation diagnostic method for pressure swing...

Details Valve operation diagnostic method for pressure swing... Valve operation diagnostic method for pressure swing...

2005-06-23

2009-02-17

Lawrence, Frank M (Department: 1797)

Gas separation: processes

Solid sorption

Including reduction of pressure

C095S103000

Reexamination Certificate

active

07491260

ABSTRACT:
Method of operating a pressure swing adsorption system having a plurality of parallel adsorber vessels and a plurality of valves and gas manifolds adapted to introduce gas into each adsorber vessel and withdraw gas from each adsorber vessel in a cyclic series of sequential process steps. A leaking valve may be identified by (1) determining a value of an operating parameter that is a function of the mass of gas provided to a receiving adsorber vessel or withdrawn from an adsorber vessel during a selected process step, portion of a process step, or series of process steps; (2) determining the deviation of the value of the operating parameter from a predetermined reference value; and (3) using the magnitude and direction of the deviation to determine whether any valves are leaking.

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patent: 4605425 (1986-08-01), Verrando et al.
patent: 6224651 (2001-05-01), Monereau et al.
patent: 1193981 (1985-09-01), None
patent: 1193981 (1985-09-01), None
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