FIELD: chemistry.
SUBSTANCE: invention relates to a method for processing a gas mixture by pressure swing adsorption, in particular by vacuum pressure swing adsorption, as well as to a corresponding unit. The initial gas mixture is temporarily directed under pressure in the direction of the main flow through the adsorption module (100) filled with adsorbent material. In the first region (110) along the main flow direction, an absorbent material is provided predominantly or exclusively in the form of first absorbent bodies; in the second region (120) along the direction of the main flow and downstream of the first region (110) there is provided an absorbent material mainly or exclusively in the form of second absorbent bodies; moreover, at least the second absorbent body is made in the form of composite bodies that have an inner core of non-porous non-absorbent material and an outer layer comprising or formed from the absorbent material; and the second absorbent bodies have a smaller proportion of absorbent material in the volume of the body than the first absorbent bodies.
EFFECT: improved processing of gas mixtures.
15 cl, 4 dwg, 1 tbl
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Authors
Dates
2023-06-07—Published
2020-03-12—Filed