Furnaces – With fuel treatment means – Preliminary refuse treatment means
Patent
1989-08-17
1990-05-22
Favors, Edward G.
Furnaces
With fuel treatment means
Preliminary refuse treatment means
110226, 110229, 110215, 110216, 110238, F23G 504
Patent
active
049267647
ABSTRACT:
Gaseous discharge from a pelletizing drier used in the treatment of sewage sludge is partially directed back to a combustion chamber that generates an effluent which is fed to the drier. Volumetric requirements of a gas scrubber and an afterburner are reduced to the volume of gaseous discharge not recycled back to the combustion chamber. A concentrated stream of sewage sludge is mixed with a quantity of dehydrated particulate matter and supplied to a rotary pelletizing drier. Fuel and air undergo a combustion process and are mixed with additional air and part of the gaseous discharge in the combustion chamber which generates a hot gaseous effluent that is directed through the drier. The effluent removes moisture from the mixture of concentrated sludge and dehydrated particulate matter to provide dehydrated particulate sludge and the gaseous discharge. Entrained materials are initially separated from the gaseous discharge by cyclone separators. A gas flow proportioning valve is disposed in a duct system interconnecting the cyclone separators, gas scrubber and combustion chamber for directing a portion of the gaseous discharge back to the combustion chamber.
REFERENCES:
patent: 3410233 (1968-11-01), Seiler
patent: 3716339 (1973-02-01), Shigaki et al.
patent: 3859933 (1975-01-01), Von Klenck
patent: 4040190 (1977-08-01), van den Broek
patent: 4429643 (1984-02-01), Mulholland
patent: 4583470 (1986-04-01), Hirose
patent: 4739715 (1988-04-01), Couarc'h et al.
Favors Edward G.
Ferensie Denise L.
LandOfFree
Sewage sludge treatment system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sewage sludge treatment system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sewage sludge treatment system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2125865