Heating – Processes of heating or heater operation – Of heating a fluid
Patent
1980-07-18
1982-01-19
Camby, John J.
Heating
Processes of heating or heater operation
Of heating a fluid
431 7, 431170, 432216, F24H 700, C21B 900, F23D 340, F23D 1900
Patent
active
043114563
ABSTRACT:
A vertically-fired blast furnace stove includes a mixing bed comprised of a multitude of spheres, cylinders or berl saddles supported by a carrier having openings therein located in the bottom portion of a vertically-extending combustion chamber. The bed extends within the walls of the combustion chamber above the floor to form a chamber coupled to pipes for delivering fuel and air to pass in the inner space openings in the bed where mixing and heating of the fuel and air supplies occurs for combustion above the bed. The hot products of combustion are directed by a dome into a heat-storage chamber having a filling of checkerbrick and then into a flue pipe. A control system operates valves for the air and gas supplies to heat the combustion walls above the ignition temperature after which the supplies of fuel and air are controlled in relation to a pressure difference between the pressure in the combustion chamber above the mixing bed and the supply pressure of at least one of the combustion components comprised of fuel and air. The fuel-to-air ratio is varied to increase the dome temperature to a predetermined maximum and thereafter the combustion products are tempered by increasing the supply of air to maintain the predetermined maximum dome temperature. During this period of control, the checkerbricks in the heat-storage chamber are heated to their desired elevated temperature which is determined by monitoring the temperature of combustion gases delivered to the flue.
REFERENCES:
patent: 1849657 (1932-03-01), Boynton
patent: 3477701 (1969-11-01), Ando et al.
patent: 3627284 (1971-12-01), Santpoort et al.
Bricmont & Associates, Inc.
Camby John J.
Murray Thomas H.
Poff Clifford A.
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