Method and apparatus for handling liquid chemical waste

Details Method and apparatus for handling liquid chemical waste Method and apparatus for handling liquid chemical waste

1997-03-20

1999-09-21

Walton, George L.

Fluid handling

Processes

With control of flow by a condition or characteristic of a...

118408, 118429, 118DIG10, 137 13, 137392, 137395, 137396, 137571, 137572, 1375905, 141198, 222 64, F16K 2100, F16K 3102, B05C 700

Patent

active

059540788

ABSTRACT:
A buffer tank and pre-wetting apparatus prevent a liquid chemical waste from crystalizing on the inside walls of a drain pipe that carries the waste to a waste tank. The pre-wetting apparatus includes a pre-wetting tank with an overflow pipe that leads to the waste tank drain pipe. A water supply is connected to fill the pre-wetting tank to the rim of the overflow pipe and then overflow to wet the inside walls of the drain pipe before waste from the buffer tank is transferred through the overflow pipe and to the drain pipe and the waste tank.

REFERENCES:
patent: 2612180 (1952-09-01), Schwarzkopf
patent: 2893444 (1959-07-01), Waddington et al.
patent: 3671142 (1972-06-01), Calabrese
patent: 4186849 (1980-02-01), Spangler
patent: 4244385 (1981-01-01), Hotine
patent: 4660586 (1987-04-01), Knapp et al.
patent: 4821921 (1989-04-01), Cartwright et al.
patent: 5207251 (1993-05-01), Cooks
patent: 5680960 (1997-10-01), Keyes et al.

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