Richard P Kawolics

US Patent:

52059111, Apr 27, 1993

Filed:

Nov 13, 1990

Appl. No.:

7/611581

Inventors:

Richard J. Kawolics - Chagrin Falls OH
Rudolf C. Matousek - Chagrin Falls OH
Anthony J. Vaccaro - Mentor OH

Assignee:

OxyTech Systems, Inc. - Chardon OH

International Classification:

C25B 1500

US Classification:

204 98

Abstract:

Chlor-alkali electrolytic cells can have separators used with metal cathodes. These cells may often be subject to frequent current interruptions. Particularly where the cathode and separator exhibit extended life, these interruptions may be numerous. There has now been developed a method for providing successful and desirable cathode operation even for such extended cell life. During cell shutdown, the cathode and separator are subjected to an elevated temperature heat treatment. After heating, and optionally following any rewetting of the diaphragm, the cathode is ready in the cell for continued, rejuvenated performance.

US Patent:

47599073, Jul 26, 1988

Filed:

Oct 31, 1986

Appl. No.:

6/925356

Inventors:

Richard J. Kawolics - Euclid OH
Philip J. Zivich - Mentor OH
Bonnie I. Nelson - Mentor OH

Assignee:

ELTECH Systems Corporation - Boca Raton FL

International Classification:

C23F 1108
B01D 1200
E03B 1102

US Classification:

422 7

Abstract:

A feeder device for controlled dissolution of a solid treating agent in a liquid of variable flow rate is designed such that the concentration of treating agent in the effluent liquid can be substantially constant, irrespective of the actual flow rate of the liquid. Further, the value of this concentration may be adjusted to varying levels and adapted to meet specific needs and requirements of the particular liquid system in which this feeder device may be employed. The constancy of concentration of the agent is obtained by the provision of a proportional weir, positioned in connection with a dissolution chamber, useful for maintaining a liquid volume in this dissolution chamber which can be linearly proportional to the flow rate of the liquid therethrough. In this liquid volume, dammed up by the weir, the solid treating agent, generally a substance containing hypochlorite, sulfite, sulphate or permanganate, can be present at least partly as a soluble solid. An amount of the agent not yet solubilized, proportional to the depth of the liquid, is contacted by and then dissolved in the liquid.