Recovery plant for surplus water paint

Details Recovery plant for surplus water paint Recovery plant for surplus water paint

1993-01-26

1995-08-22

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210651, 210259, B01D 6104

Patent

active

054437385

ABSTRACT:
To provide a recovery plant for surplus water paint in paint-spraying booths comprising a circuit of water circulating in the booth, wherein such problems with sedimenting water paint particles no longer arise, it is proposed that a volume flow of water circulating in the booth flow from the circuit of water circulating in the booth through a branch pipe to a preconcentration stage, that the preconcentration stage comprise a ring circuit with an ultrafiltration unit for continuously producing a preconcentrate in the ring circuit and a permeate which leaves the ring circuit, that the permeate flow into the circuit of water circulating in the booth and the preconcentrate into a final concentration stage, that the final concentration stage comprise a ring circuit with an ultrafiltration unit which increases the concentration of the preconcentrate in batches to the final concentrate and produces a permeate which flows into the circuit of water circulating in the booth.

REFERENCES:
patent: 3528901 (1970-09-01), Wallace et al.
patent: 3856569 (1974-12-01), Strong
patent: 4222874 (1980-09-01), Connelly
patent: 5009789 (1991-04-01), Helmer et al.
patent: 5164092 (1992-11-01), Munch

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