Process for the disposal of hardening-shop wastewaters

Details Process for the disposal of hardening-shop wastewaters Process for the disposal of hardening-shop wastewaters

1988-12-29

1990-03-06

Manoharan, Virginia

Concentrating evaporators

Processes

Involving waste liquid

159 161, 159DIG6, 203 10, 203 12, 203 49, 203100, B01D 114

Patent

active

049063308

ABSTRACT:
Hardening-shop wastewaters can be removed without salt incrustations and without creating harmful exhaust steam during the evaporation of the wastewaters only if the heat is supplied across the free liquid surface to temperatures of 50.degree. C. to 85.degree. C. and a flow of air is conducted across the free liquid surface.

REFERENCES:
patent: 1284218 (1918-11-01), Benjamin
patent: 2042145 (1936-05-01), Darrah
patent: 2343666 (1944-03-01), Hickman et al.
patent: 2419875 (1947-04-01), Birdseye
patent: 3565767 (1971-02-01), Light
patent: 3870585 (1975-03-01), Kearns et al.
patent: 3970511 (1976-07-01), Rat et al.
patent: 4465554 (1984-08-01), Glass
patent: 4800252 (1989-01-01), Steixner

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