Process of removal of solvent vapors

Details Process of removal of solvent vapors Process of removal of solvent vapors

1980-02-14

1981-05-05

Nozick, Bernard

Gas separation

Means within gas stream for conducting concentrate to collector

55 89, 55 22, 55 45, 98115SB, 210650, B01D 4702

Patent

active

042656427

ABSTRACT:
A process for removing volatile vapor solvents, particularly from paint-spray booths and paint dryers, and recovering such solvents, which process comprises: intimately contacting the solvent-laden air with a multiphase scrubbing media, particularly a water stream containing an oil-in-water emulsion or a surfactant or a powdered activated carbon, to capture and to dissolve the solvent vapor in the dispersed phase of the scrubbing media in a gas scrubber; removing the solvent-enriched scrubbing media and concentrating the solvent-enriched scrubbing media employing an ultrafiltration device; stripping the solvent from the concentrated solvent-enriched scrubbing media from the ultrafiltration device to remove and recover the solvent, while recycling the scrubbing media for further contact with fresh solvent-laden air; and recycling the water carrier as a permeate for reuse in contacting the solvent-laden air.

REFERENCES:
patent: 2823763 (1958-02-01), Maslan
patent: 2982723 (1961-05-01), Arnold et al.
patent: 3068627 (1962-12-01), Sherwood
patent: 3519558 (1970-07-01), Cooper et al.
patent: 4136025 (1979-01-01), Zwack et al.

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