Heating – Processes of heating or heater operation – Including passing – treating or conveying gas into or through...
Patent
1985-04-29
1986-02-18
Yuen, Henry C.
Heating
Processes of heating or heater operation
Including passing, treating or conveying gas into or through...
110228, 110238, 110224, F27B 1500, F23G 704
Patent
active
045711755
ABSTRACT:
A method of disposing of aqueous waste in which the aqueous waste is mixed with cement raw materials to form a slurry for the preparation of Portland cement or the like, for example in a rotary kiln. Prior to forming the slurry, the aqueous waste is treated to remove volatiles and other pollutants which vaporize when heated to a temperature below the boiling point of water. Such volatile materials are removed by contacting the aqueous waste with the effluent exhaust gases from the kiln itself and with the effluent air from the clinker cooler with suitable controls to avoid loss of the water component of the aqueous waste through boiling. The treated aqueous waste is then embodied in the slurry fed to the kiln and the pollutants in the water which can be combusted by the high temperature in the kiln are destroyed. The gaseous effluent which is cooled by contact with the aqueous waste may be discharged or further treated to recover the volatiles and other components which may be salvaged.
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Bogle Hugh A.
Buchanan Charles E.
Roan Industries, Inc.
Yuen Henry C.
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