Acid gas scrubbing by composite solvent-swollen membranes

Details Acid gas scrubbing by composite solvent-swollen membranes Acid gas scrubbing by composite solvent-swollen membranes

B - Operations, Transporting

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B01D 53/22 (2006.01) B01D 61/38 (2006.01) B01D 67/00 (2006.01) B01D 69/10 (2006.01) B01D 69/12 (2006.01)

Patent

CA 1312428

Abstract of the Disclosure A composite immobilized liquid membrane suitable for acid gas scrubbing is disclosed, the membrane comprising a solvent-swollen polymer and a microporous polymeric support, the solvent comprising at least one solvent selected from a class of solvents comprising those solvents with a highly polar group in the molecular structure of the solvent, said highly polar group containing at least one atom selected from nitrogen, oxygen, phosphorous and sulfur, said solvents having a boiling point of at least 100°C and a solubility parameter of from about 7.5 to about 13.5 (cal/cm3-atm)1/2. Said solvents are homogeneously distributed through the solvent-swollen polymer from 20% to 95% by weight. Also disclosed are methods of acid gas scrubbing of high- and low-Btu gas effluents with such solvent-swollen membranes.

554872

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