PROCESS AND APPARATUS FOR PRODUCING OXYGEN AND NITROGEN USING ION TRANSPORT MEMBRANES

摘要

Process and apparatus for producing an oxygen product gas and a nitrogen product gas using ion transport membrane assemblies. The apparatus comprises at least two ion transport membrane assemblies and a turboexpander downstream of one of the ion transport membrane assemblies. In the process, an oxygen- and nitrogen-containing gas is introduced into one of the ion transport membrane assemblies to produce oxygen- depleted gas and an oxygen product gas and an oxygen- and nitrogen-containing gas is introduced into another of the ion transport membrane assemblies to produce a nitrogen product gas and an oxygen product gas.