3544.     VAN DYKE, B. H.  Low-Pressure Oxygen Cycle.  Chem. Eng. Progress, vol. 44, No. 10, 1948, pp. 20, 38, 42 (News Sec.); Chem. and Ind., vol. 63, No. 4, 1948, pp. 604-607; Petrol. Refiner, vol. 27, No. 10, 1948, pp. 540-544; Blast Furnace Steel Plant, vol. 36, 1948, pp. 1212-1215.

        Elliott Co. plant, described by the help of a simplified flow diagram, is designed to produce approximately 114 tons per day of 95% purity gaseous O2, plus approximately 6 tons per day of 99.5% high-purity gaseous O2, plus 332 tons per day of 99.5% purity dry N2.  The recovery of O2 from the air charged to the plant is approximately 97.5%.