초록 ▼

An integrated pressure swing adsorption/membrane separation process is disclosed for the separation and purification of at least one gas component of a feed gas in which the purge effluent from the pressure swing adsorption part of the system is passed through a membrane separation unit to produce a

An integrated pressure swing adsorption/membrane separation process is disclosed for the separation and purification of at least one gas component of a feed gas in which the purge effluent from the pressure swing adsorption part of the system is passed through a membrane separation unit to produce a non-permeate which is utilized as a displacement gas in the pressure swing adsorption part of the system. Desirably, the permeate is also utilized as a purge gas or repressurization gas. The apparatus for carrying out the process is also disclosed.

대표청구항 ▼

In a pressure swing adsorption process containing at least one adsorption bed in which at least one more readily adsorbable gas component is separated from at least one less readily adsorbable gas component and in which a purge effluent is obtained during the purging of said adsorption bed, and furt

In a pressure swing adsorption process containing at least one adsorption bed in which at least one more readily adsorbable gas component is separated from at least one less readily adsorbable gas component and in which a purge effluent is obtained during the purging of said adsorption bed, and further in which a displacement gas is introduced into the absorption bed to displace the at least one less readily absorbable gas component contained within the bed, the improvement which comprises passing at least a portion of the purge effluent through a membrane separation unit to concentrate the at least one more readily adsorbable gas component to form a concentrated gas stream and using said concentrated gas stream as the displacement gas in said pressure swing adsorption process.