Membrane/deoxo control method and system

Details Membrane/deoxo control method and system Membrane/deoxo control method and system

C - Chemistry, Metallurgy

01

B

C01B 21/04 (2006.01) B01D 53/047 (2006.01) B01D 53/22 (2006.01) B01D 53/86 (2006.01)

Patent

CA 2047518

- 27 - IMPROVED MEMBRANE/DEOXO CONTROL METHOD AND SYSTEM Abstract of the Disclosure Membrane or pressure swing adsorption systems are used for air separation, with the crude nitrogen stream obtained thereby passing to a catalytic combustion system for reaction of residual oxygen with hydrogen to produce a high purity nitrogen product. Excess hydrogen in the nitrogen product is minimized by controlling the amount of hydrogen employed based on the instantaneous crude nitrogen flow and purity, and adjusting hydrogen ingestion in response to nitrogen product purity feedback, Plant flow rate tracking control limits maximum rates of flow change to ensure stable operation. D-16427

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