Apparatus and process for the separation of gas mixtures by pressure swing adsorption
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorsChristian Monereau, Nathalie Derive, Pierre Petit
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Abstract
The apparatus for the separation of a gas mixture by pressure swing adsorption (PSA) comprises at least one adsorber A and a first vessel T which can be selectively connected to the adsorber in order temporarily to store the gas which is extracted from the adsorber and reintroduced into it during a cycle, the vessel T having a fixed free internal volume V, a vertical main direction of height h, with the relationship 25.ltoreq.h.sup.3 /V.ltoreq.150, and the gas fraction entering and leaving the vessel T at its lower part, and remaining therein for a time which does not exceed 300 seconds. The apparatus is useful in the production of oxygen or hydrogen.
Claims11
PSA separation process employing an apparatus having at least one adsorber and at least a first vessel which can be selectively connected to the adsorber, via at least a first line, in order temporarily to store a gas fraction which is extracted from the adsorber and reintroduced into it during a cycle, the first vessel having a fixed free internal volume and a vertical main direction with a height h such that 25.ltoreq.h.sup.3 /V.ltoreq.150, the first line communicating with the lower part of the first vessel, the process comprising, in sequence, a production phase, a regeneration/elution phase and a recompression phase, with the storage time of the gas fraction in the first vessel not exceeding 300 seconds.
Apparatus for the separation of a gas mixture by pressure swing adsorption, comprising at least one adsorber and at least a first vessel which can be selectively connected to the adsorber, via at least a first line, in order temporarily to store a gas fraction which is extracted from the adsorber and reintroduced into it during a cycle, wherein the first vessel has a fixed free internal volume and a vertical main direction with a height h such that 25.ltoreq.h.sup.3 /V.ltoreq.150, the first line communicating with the lower part of the first vessel.
Dependencies are inferred from the claim text.