DOUGLAS CHARLES MCHANEY
Pilots in Redding, CA
License number
California A4288511
Issued Date
Dec 2015
Expiration Date
Dec 2017
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
PO Box 494639, Redding, CA 96049
Professional information
Continuous Gravity Assisted Ultrasonic Coal Cleaner
US Patent:
2010023, Sep 16, 2010
Filed:
Mar 16, 2010
Appl. No.:
12/724720
Inventors:
Bruce H. Kittrick - Redding CA, US
Douglas C. McHaney - Redding CA, US
Douglas C. McHaney - Redding CA, US
International Classification:
B07C 5/12, B03B 5/68
US Classification:
209659, 209157
Abstract:
An improved system and method for separating combustible organic particles from noncombustible inorganic particles in coal, in preparation for combustion. The coal is size-reduced and size-graded to small pieces which are then supplied to input ends of water-immersed descending slides having ultrasonic transducers for vibratory separation of inorganic and organic particles. The slides have different longitudinal lengths with angles of declination configured to achieve time-differential exposure to the ultrasonic vibratory energy, with smaller coal pieces being subjected to shorter time ultrasonic vibratory exposure. In one preferred form, longitudinally spaced turbidity sensors along the slide provide signals used to control selected ultrasonic transducers upon substantially complete cleaning of the coal pieces.