Heating – Processes of heating or heater operation – Of heating a fluid
Patent
1982-06-29
1984-06-05
Yuen, Henry C.
Heating
Processes of heating or heater operation
Of heating a fluid
432 40, 165DIG12, F24H 700, F28D 1700
Patent
active
044525869
ABSTRACT:
A method of and a device for blast heating is described, employing separate indirect heat exchangers for combustion air and fuel gas fed to a regenerator and flue gases discharged from the regenerator. The indirect heat exchangers share heat-transfer liquid recirculating in a circuit in which an auxiliary heat exchanger is connected. In the latter exchanger, the temperature of transfer liquid is increased by combustion of partial streams of combustion air and fuel gas branched off downstream of the indirect heat exchangers. The temperature is increased to such a value which preheats the fuel gas to a temperature at which a substitution of fuel gas of a low calorific value, such as waste gas from a blast furnace, for fuel gas of high calorific value, is made possible.
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Krupp-Koppers GmbH
Striker Michael J.
Yuen Henry C.
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