Heating – Heat generator heats gas or liquid material in a flow structure – Material heated by mixing with combustion products of generator
Patent
1980-10-16
1983-03-08
Schwartz, Larry I.
Heating
Heat generator heats gas or liquid material in a flow structure
Material heated by mixing with combustion products of generator
34 35, 34 86, 34138, 34 75, 110224, F26B 320
Patent
active
043759599
ABSTRACT:
In an asphalt mixing plant, a portion of the heat used to vaporize water in the process of drying aggregate is recovered by conducting dryer exhaust gases through parallel ducts which extend serially through the aggregate cold feed bins. These parallel ducts are vertically elongated for optimum heat transfer and to avoid impeding aggregated flow. The ducts have vertically extending external fins for greater contact with the aggregate in the bins. They also have horizontally extending internal fins for improved heat transfer between the exhaust gases and the ducts. The ducts are peaked, and conforming protective caps are provided to prevent damage to the ducts during loading of the bins. Water injection is used to initiate condensation of water vapor in the exhaust gases.
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"Heating and Drying of Aggregate -- Capture of Waste Heat", Report by National Asphalt Pavement Association, Publication date unknown.
Schwartz Larry I.
The McCarter Corporation
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