Patent ID: 6270556
Filing Date: 2001-08-07
Classification: B01D

Abstract:
Process for controlling a PSA plant for separating a gas stream, operating in a production cycle and having at least one adsorber, each production cycle comprising the following steps:at least one feed step of feed duration (TA), which comprises at least one introduction of the gas stream to be separated into at least one adsorber;at least one production step comprising at least one recovery of a stream of gas produced at a prefixed production pressure (PP) and with a prefixed nominal production output (DN); andat least one pumping step of pumping duration (TP), which comprises at least one extraction of a gas stream from at least one adsorber;and in which the feed duration (TA) and the pumping duration (TP) are jointly adjusted in order to maintain, downstream of said PSA plant, the production pressure (PP) approximately constant for at least one actual production output (DR) of less than or equal to the nominal production output (DN).