Capacitor electrolyte recovery

Details Capacitor electrolyte recovery Capacitor electrolyte recovery

2005-05-24

2005-05-24

Drodge, Joseph (Department: 1723)

Liquid purification or separation

Processes

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

C023S299000, C023S303000, C203S048000, C210S772000, C210S774000, C210S806000, C241S021000, C241S023000, C361S502000, C361S505000

Reexamination Certificate

active

06896807

ABSTRACT:
A method for recovering and recycling expensive and hazardous components from capacitors containing an electrolyte salt dissolved in an aprotic organic solvent. The method includes disintegrating a plurality of capacitor casings and their contents into fragments and forming an aqueous slurry of water insoluble fragments, filtering fractionally distilling the filtrate to remove the solvent as a distillate and recovering the electrolyte salt.

REFERENCES:
patent: 4215385 (1980-07-01), Behn et al.
patent: 6089479 (2000-07-01), Chang et al.
patent: 6096185 (2000-08-01), Corlett et al.
patent: 6164571 (2000-12-01), Kovalak et al.
patent: 6356433 (2002-03-01), Shi et al.

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