Blast furnace stove

Patent · Tue Jan 19 04:00:00 EST 1982

OSTI ID:5396293

Kletch, S J

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.

• Assignee: Bricmont and Assoc Inc
• Patent Number(s): US 4311456
• OSTI ID: 5396293
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320303 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
42 ENGINEERING
421000* -- Engineering-- Combustion Systems
BLAST FURNACES
COMBUSTION CHAMBERS
CONTROL SYSTEMS
FUEL-AIR RATIO
FURNACES
HEAT EXCHANGERS
TEMPERATURE MEASUREMENT