Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1992-07-27
1993-06-29
Spear, Frank
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
210789, 210511, B01D 1104
Patent
active
052231410
ABSTRACT:
A method for the removal and recovery of paint overspray in a water wash spray booth is disclosed. The method uses a circulating agitated dispersion of an organic solvent component in water which collects the paint overspray. The dispersion containing the overspray is permitted to phase separate into an organic phase and an aqueous phase. The organic phase is further treated such as by distillation to separate the paint solids from an organic solvent portion which contains the original organic solvent component and the organic solvents associated with the paint. The organic solvent portion can be recycled and reused in the circulating dispersion and the paint solids can be recovered for further use such as a filler for adhesives or can be disposed of.
REFERENCES:
patent: 4854947 (1989-08-01), Patzelt
patent: 4919691 (1990-04-01), Patzelt et al.
patent: 5019138 (1991-05-01), Farrah et al.
patent: 5098450 (1992-03-01), Patzelt et al.
Brown William B.
Charles Harry R.
Miles Dean L.
Tisko Edmund L.
Chemfil Corporation
Spear Frank
Uhl William J.
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