초록 ▼

A process for increasing the proportion of a gas in a gaseous mixture comprising such gas and at least two other constituents. The gaseous mixture in a substantially unpressurized condition is drawn successively through two beds of absorbent which adsorbs the two other constituents respectively by t

A process for increasing the proportion of a gas in a gaseous mixture comprising such gas and at least two other constituents. The gaseous mixture in a substantially unpressurized condition is drawn successively through two beds of absorbent which adsorbs the two other constituents respectively by the action of a reduced pressure applied to an outlet of the second adsorbent bed in the series. The beds are then regenerated prior to a further admission of gaseous mixture thereto.

대표청구항 ▼

In a process for increasing the proportion of a selected component in a gaseous mixture which includes at least two other components, wherein the process employs a first adsorbent bed which preferentially adsorbs at least one of the other components and a second adsorbent bed which preferentially ad

In a process for increasing the proportion of a selected component in a gaseous mixture which includes at least two other components, wherein the process employs a first adsorbent bed which preferentially adsorbs at least one of the other components and a second adsorbent bed which preferentially adsorbs at least another of the other components, the beds being connected together in series and having an inlet for the gaseous mixture at one end of the series of beds and an outlet for product gas at the opposite end of the series of beds, 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 beds through said inlet while simultaneously withdrawing an unadsorbed product gas from the beds through said outlet by the action of a reduced pressure applied to said outlet, and regenerating the beds by the action of a reduced pressure applied to said inlet without an intervening purge step.