Patent attributes
An air separation system and method wherein the outlet of a primary air separation module (one or more modules or bundles of fiber membranes) is split into two flow paths, a low flow path and a high flow path. The outlet of a secondary air separation module (one or more modules or bundles of fiber membranes) is split into two flow paths, a mid flow path and a high flow path, the latter being joined with the high flow of the primary air separation module. Flow along the primary low flow passes through a low-flow orifice, flow along the secondary mid-flow path passes through a mid-flow orifice, and flow along the high flow paths of both the primary and secondary air separation modules is joined together for passage through a shutoff valve and a high flow orifice. This configuration allows for three different flow modes of operation.
