Patent ID: 6117210
Filing Date: 2000-09-12
Classification: B01D,C01B

Abstract:
A process for producing a diluted oxygen product gas stream having a concentration of oxygen of about 80% to about 99.7% oxygen by volume, comprising the steps of:a. separating a feed gas stream comprising air, using an ion transport module containing an ion transport membrane having a retentate side and a permeate side, into a retentate gas stream on the retentate side and an ultrapure oxygen gas stream emerging from the ion transport membrane into the permeate side;b. introducing a diluent gas into the permeate side through one or more conduits that extend from the retentate side of the ion transport module to the permeate side; andc. blending said ultrapure oxygen gas stream with said diluent gas to produce a diluted oxygen product gas stream having a concentration of oxygen of about 80% to about 99.7% oxygen by volume.