Gas separation
AssigneeBOC Limited
InventorsJohn W. Armond, Martyn S. Ray
Life of this patent
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Abstract
A process for increasing the proportion of a gas in a gaseous mixture of which it is a component. The gaseous mixture is allowed to be drawn through an adsorbent bed in a substantially unpressurized condition by the action of a reduced pressure applied to an outlet of the bed. The bed is then regenerated prior to a further admission of the gaseous mixture thereto.
Claims14
In a process for increasing the proportion of a selected component in a gaseous mixture wherein the process employs an absorbent bed which preferentially adsorbs one or more other components of the mixture, the bed having an inlet for the gaseous mixture at one end and an outlet for product gas at its opposite end, the improvement comprising repeating a cycle of operation which includes the successive steps of:
- allowing the gaseous mixture in a substantially unpressurized condition to be drawn into the bed through said inlet while simultaneously withdrawing an unadsorbed product gas from the bed through said outlet, and regenerating the bed by the action of a reduced pressure applied to said inlet without an intervening purge step at least at atmospheric pressure.
Dependencies are inferred from the claim text.