Fluidic density control for chlor alkali cells

Details Fluidic density control for chlor alkali cells Fluidic density control for chlor alkali cells

1995-01-30

1996-09-03

Hepperle, Stephen M.

Fluid handling

Processes

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

137 91, G05D 2102

Patent

active

055514685

ABSTRACT:
The density of a caustic solution is reduced by automatically adding water to the caustic solution when the specific gravity of the caustic solution is unacceptably high. The mechanism consists of a flow control valve that is controlled by an switch that monitors the position of a hydrometer. The switch is activated when the density of the caustic solution rises to unacceptable levels, causing the hydrometer to rise and activate the switch. The switch controls a valve that opens and allows water to enter the caustic solution reservoir, thereby diluting the caustic solution. When sufficient water has been added to the caustic, the hydrometer drops and the switch is deactivated, thereby closing the valve that allows water to enter the caustic solution reservoir. Excess caustic solution leaves the reservoir through an overflow on the reservoir.

REFERENCES:
patent: 2543522 (1951-02-01), Cohen
patent: 3089502 (1963-05-01), Davidson et al.
patent: 4422085 (1983-12-01), Sumitomo et al.
patent: 4601306 (1986-07-01), Engelhardt et al.
patent: 4825228 (1989-04-01), Gloeckler
patent: 4899774 (1990-02-01), Keller
patent: 5013488 (1991-05-01), Abadi et al.

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