Evaporative treatment of inorganic saponifier wash water

Details Evaporative treatment of inorganic saponifier wash water Evaporative treatment of inorganic saponifier wash water

1993-09-30

1994-09-20

Lieberman, Paul

Cleaning and liquid contact with solids

Processes

Including regeneration, purification, recovery or separation...

134 11, 203 47, 203 22, 159 242, 159 473, B08B 704, B01D 100

Patent

active

053485882

ABSTRACT:
The aqueous effluent from the wash cycle of a process for cleaning electronic circuit assemblies of rosin flux and other organic residues with an aqueous alkaline cleaning solution comprises evaporating the effluent to cause separation of an aqueous vapor phase and a solid phase comprising residues of the rosin flux and residues of the cleaning solution including alkaline salts such as alkali metal carbonates and bicarbonates and organic adjuvants such as surfactants which do not vaporize.

REFERENCES:
patent: 3772082 (1973-11-01), Dunn, Jr.
patent: 3899348 (1975-08-01), Tedden
patent: 3979220 (1976-09-01), Ishiyama et al.
patent: 4197139 (1980-08-01), Hjersted
patent: 4244506 (1981-01-01), Stokes, Jr. et al.
patent: 4468257 (1984-08-01), Kaneko et al.
patent: 4676908 (1987-06-01), Ciepiela et al.
patent: 4983224 (1991-01-01), Mombrun et al.

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