초록 ▼

This process carries out a cycle on a monoadsorber (1) connected, on the one hand, to at least one container (2, 3) via a line (8, 10) fitted with a variable-opening valve (9, 11) and, on the other hand, to a reversible compression/pumping machine coupled to a speed variator (5). Application in part

This process carries out a cycle on a monoadsorber (1) connected, on the one hand, to at least one container (2, 3) via a line (8, 10) fitted with a variable-opening valve (9, 11) and, on the other hand, to a reversible compression/pumping machine coupled to a speed variator (5). Application in particular to the production of oxygen at a variable flow rate from atmospheric air.

대표청구항 ▼

[ I claim:] [1.] Process for the treatment of a gas by pressure-swing adsorption between a high cycle pressure (PM) above atmospheric pressure and a low cycle pressure (Pm) below atmospheric pressure, in which:an adsorber (1) coupled to at least one container (2, 3) and to a reversible compression/p

[ I claim:] [1.] Process for the treatment of a gas by pressure-swing adsorption between a high cycle pressure (PM) above atmospheric pressure and a low cycle pressure (Pm) below atmospheric pressure, in which:an adsorber (1) coupled to at least one container (2, 3) and to a reversible compression/pumping machine (4) is used;a cycle, comprising a production phase (b), a regeneration phase comprising a purge step (d) by countercurrent pumping down to the low pressure of the cycle, and a recompression phase comprising a final, cocurrent recompression step (a), is carried out in the adsorber; andwhen the production flow rate is reduced (or alternatively increased) from a first value DN to a very different second value D, the speed of rotation of the machine (4) is reduced (or alternatively increased) during the production phase (b), the purge step (d) and the final recompression step (a), the cross-sectional flow area for the gas product leaving the adsorber (1) is reduced (or alternatively increased) during the production phase (b), and the durations of the production phase (b), of the purge step (d) and of the final recompression step (a) are increased (or alternatively reduced).