초록 ▼

Process for treating a gas mixture by pressure swing adsorption wherein for each adsorber (1), the duration (T.sub.R) of the countercurrent recompression step is much less than that (T.sub.D) of the cocurrent decompression step. The process is particularly useful in the production of oxygen from atm

Process for treating a gas mixture by pressure swing adsorption wherein for each adsorber (1), the duration (T.sub.R) of the countercurrent recompression step is much less than that (T.sub.D) of the cocurrent decompression step. The process is particularly useful in the production of oxygen from atmospheric air.

대표청구항 ▼

[ What is claimed is:] [1.] Process for treating a gas mixture by pressure swing adsorption in a plant comprising at least one adsorber (1), wherein, in the or in each adsorber (1), a cycle is carried out which comprises a production phase and a regeneration phase, the latter including an initial ph

[ What is claimed is:] [1.] Process for treating a gas mixture by pressure swing adsorption in a plant comprising at least one adsorber (1), wherein, in the or in each adsorber (1), a cycle is carried out which comprises a production phase and a regeneration phase, the latter including an initial phase, which includes a cocurrent decompression step, and a final phase, which includes a countercurrent recompression step, wherein, at least during the recompression step (5) of the final regeneration phase, gas output from the cocurrent decompression step (3) is introduced in countercurrent, and in that the duration (T.sub.R) of the countercurrent recompression step (5)is less than that (T.sub.D) of the cocurrent decompression step (3).