Metallurgical apparatus – With control means responsive to sensed condition – With means supplying a treating agent
Patent
1974-11-18
1977-01-04
Lake, Roy
Metallurgical apparatus
With control means responsive to sensed condition
With means supplying a treating agent
266155, 266159, 266219, 55226, C21B 722
Patent
active
040008851
ABSTRACT:
An improved cupola furnace waste gas recuperative system and method for collecting waste furnace gases, cleaning them for the purpose of safely burning same either in a recuperator-heat exchanger for preheating incoming furnace blast air or for other heating purposes. The improvement consists of a method and means to control the pressure inside of the gas take-off chamber of an open, top charged, cupola furnace for the purposes of preventing gases from escaping through the charging hopper, preventing the indraft of excessive amounts of air, preventing explosive combustion and flashback of the waste gas and maintaining cleaning efficiency at any gas flow rate. Means include the controlled recirculation of a variable portion of the waste gas through part of the gas cleaning system and control of the furnace top gas pressure as a function of the incoming cupola furnace blast air.
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The Cupola and Its Operation, American Foundrymans Society, Third Edition, 1965, pp. 29-31, 85.
Bell Paul A.
Lake Roy
Whiting Corporation
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