System and process for recycling aqueous cleaners

Details System and process for recycling aqueous cleaners System and process for recycling aqueous cleaners

1991-07-12

1993-08-03

McAvoy, Ellen M.

Bleaching and dyeing; fluid treatment and chemical modification

Cleaning or laundering

Waste reclaiming and conditioning

8137, 210702, 210712, 210723, 210724, 210167, 252158, 252153, 134 13, 134 41, D06F 9500

Patent

active

052324605

ABSTRACT:
A system and process for recycling alkaline aqueous cleaners for electronic components. Such cleaners generally contain saponifiers which react with rosin flux on the electronic components to form rosin soaps. Spent cleaner is concentrated, the pH is lowered to cause a separation between the cleaner and the soils within the cleaner. The cleaner then is filtered to further remove any soils. The filtered cleaner is then reconstituted to a determined concentration and pH level and returned to the cleaning system.

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patent: 4118407 (1978-10-01), Red et al.
patent: 4330342 (1982-05-01), Fennemann et al.
patent: 4481236 (1984-11-01), Forsterling
patent: 4788043 (1988-11-01), Kagiyama et al.
patent: 4897203 (1990-01-01), King
patent: 4986462 (1991-01-01), Hethcoat

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