ADSORPTION PLANT FOR PRODUCING OXYGEN Russian patent published in 1997 - IPC

FIELD: air separation engineering. SUBSTANCE: invention focuses on air separation via short-cycle heatingless adsorption leading to increasing oxygen content. Plant contains, mounted in one housing, two two-pass adsorbers with inner shells forming central cavity with outlet fitting and annular peripheral cavity with inlet fitting. Each adsorber is layer-by-layer filled with at least two different sorbents, the first one (in air flow direction) occupies at least 0.1 adsorber space and has larger grain size than the second one. Plant further contains worm moisture trap, gas stream control valves, and connecting pipelines. Axes of inner shell and inlet fitting are shifted relative to adsorber casing in opposite directions. Diameter of inner shell is 0.4 to 0.7 that of casing, and inlet and outlet fittings are imbedded into bottoms of adsorbers. EFFECT: improved design. 2 cl, 1 dwg