System for reducing liquid waste generated by dry cleaning

Details System for reducing liquid waste generated by dry cleaning System for reducing liquid waste generated by dry cleaning

1995-08-03

1997-08-05

Drodge, Joseph W.

Liquid purification or separation

Automatic control

Thermal

68 18C, 68 18R, 96182, 96203, 202176, 210167, 210180, B01D 342, B01D 336

Patent

active

056538731

ABSTRACT:
A system and method for reducing the volume of the liquid hazardous waste stream generated as a byproduct of the dry cleaning process combines an air atomization apparatus, and a temperature controlled water injection apparatus. The air atomization apparatus disposes of separator water by misting. The temperature controlled injection apparatus uses dry cleaning separator water to create and boil an azeotropic mixture in the still of the dry cleaning machine itself. Consequently, the storage and disposal of separator water is eliminated and almost no solvent is left in the residue of the still before disposal.

REFERENCES:
patent: 3692467 (1972-09-01), Durr et al.
patent: 3977218 (1976-08-01), Zucchini
patent: 4091643 (1978-05-01), Zucchini
patent: 4513590 (1985-04-01), Fine
patent: 4664754 (1987-05-01), Caputi et al.
patent: 4885099 (1989-12-01), Kelly
patent: 5194185 (1993-03-01), Cannon et al.
patent: 5236580 (1993-08-01), Kelleher
patent: 5525213 (1996-06-01), Phillips

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