Acid gas scrubbing by composite solvent-swollen membranes

Patent · Thu Dec 31 23:00:00 EST 1987

OSTI ID:866564

Matson, Stephen L ^[1]; Lee, Eric K. L. ^[2]; Friesen, Dwayne T ^[3]; Kelly, Donald J ^[3]

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1. Harvard, MA
2. Acton, MA
3. Bend, OR

A composite immobilized liquid membrane suitable for acid gas scrubbing is disclosed. The membrane is a solvent-swollen polymer and a microporous polymeric support, the solvent being selected from a class of highly polar solvents containing at least one atom selected from nitrogen, oxygen, phosphorous and sulfur, and having a boiling point of at least 100.degree. C. and a solubility parameter of from about 7.5 to about 13.5 (cal/cm.sup.3 -atm).sup.1/2. Such 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.

• Research Organization: Bend Research Inc
• DOE Contract Number: AC03-83ER80035
• Assignee: Bend Research, Inc. (Bend, OR)
• Patent Number(s): US 4737166
• OSTI ID: 866564
• Country of Publication: United States
• Language: English

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