Christopher Charles Rayner
Engineers at Barbee Ln, Alamo, CA
License number
Colorado 12892
Issued Date
Sep 21, 1974
Renew Date
Aug 1, 2008
Expiration Date
Jul 31, 2010
Type
Professional Engineer
Address
Address
10 Barbee Ln, Alamo, CA 94507
Professional information
Electrode Cap With Integral Tank Cover For Acid Mist Collection
US Patent:
5609738, Mar 11, 1997
Filed:
Nov 27, 1995
Appl. No.:
8/563164
Inventors:
James A. Murray - Walnut Creek CA
Michael R. Nees - Clayton CA
William P. Imrie - Layfayette CA
Christopher C. Rayner - Alamo CA
Chris L. Pfalzgraff - Concord CA
Robert K. Bates - San Ramon CA
Valmer H. Ness - Hieblends Ramon CO
Terrance J. Cox - San Francisco CA
Michael R. Nees - Clayton CA
William P. Imrie - Layfayette CA
Christopher C. Rayner - Alamo CA
Chris L. Pfalzgraff - Concord CA
Robert K. Bates - San Ramon CA
Valmer H. Ness - Hieblends Ramon CO
Terrance J. Cox - San Francisco CA
Assignee:
Bechtel Group, Inc. - San Francisco CA
International Classification:
C25D 702
US Classification:
204279
Abstract:
In a tank confined electrolysis process, such as electrowinning or electrorefining, having circulated electroplating solution containing sulfuric acid, a multi-element cover system is applied below the electrode conductor connections and above the surface of the electrolyte bath. This cover is evacuated in the interstices below the cover and above the bath at a rate exceeding the stoichiometric ratio causing any leakage to occur into the volume overlying the bath thereby preventing acid aerosol from escape. The rate of evacuation is restricted so that humidity is maintain under the cover and over the surface of the bath to prevent the formation of crystals formed from aerosol droplets which become supersaturated. In a preferred embodiment, a circular weir in combination with gas discharge over the weir to a downcomer is disclosed. Entrainment of air over the weir and into the downcomer is disclosed to provide sufficient pumping for evacuation.
Electrode Cap With Integral Tank Cover For Acid Mist Collection
US Patent:
5470445, Nov 28, 1995
Filed:
Apr 12, 1994
Appl. No.:
8/226785
Inventors:
James A. Murray - Walnut Creek CA
Michael R. Nees - Clayton CA
William P. Imrie - Layfayette CA
Christopher C. Rayner - Alamo CA
Chris L. Pfalzgraff - Concord CA
Robert K. Bates - San Ramon CA
Valmer H. Ness - Highlands Ranch CO
Terrance J. Cox - San Francisco CA
Michael R. Nees - Clayton CA
William P. Imrie - Layfayette CA
Christopher C. Rayner - Alamo CA
Chris L. Pfalzgraff - Concord CA
Robert K. Bates - San Ramon CA
Valmer H. Ness - Highlands Ranch CO
Terrance J. Cox - San Francisco CA
Assignee:
Bechtel Group, Inc. - San Francisco CA
International Classification:
C25C 706
US Classification:
204105R
Abstract:
In a tank confined electrolysis process, such as electrowinning or electrorefining, having circulated electroplating solution containing sulfuric acid, a multi-element cover system is applied below the electrode conductor connections and above the surface of the electrolyte bath. This cover is evacuated in the interstices below the cover and above the bath at a rate exceeding the stoichiometric ratio causing any leakage to occur into the volume overlying the bath thereby preventing acid aerosol from escape. The rate of evacuation is restricted so that humidity is maintain under the cover and over the surface of the bath to prevent the formation of crystals formed from aerosol droplets which become supersaturated. In a preferred embodiment, a circular weir in combination with gas discharge over the weir to a downcomer is disclosed. Entrainment of air over the weir and into the downcomer is disclosed to provide sufficient pumping for evacuation.