The fuel consumed within a B.F. stove is______________________?
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Answer: C. Blast furnace gas/mixed gas
Explanation
Blast furnace stoves are fueled by cleaned, low-calorific blast furnace gas. Steel plants sometimes use a mixed gas combining blast furnace and coke oven gases. Burning this gas heats the internal checker bricks before switching to blast mode. Blast furnace gas is a byproduct containing carbon monoxide, carbon dioxide, and nitrogen. Stoves operate in cyclic heating and cooling phases to preheat high-pressure blast air. Using low-calorific byproduct gas internally maximizes the energy efficiency of the steel mill.
Integrated steel mills recycle byproduct gases to fuel stoves and reheating furnaces. Stove combustion systems require careful gas cleaning to prevent refractory fouling. Maintaining high stove dome temperatures is critical for efficient blast furnace operation. Pulverized coal is used in blast furnace tuyeres rather than as fuel in the stoves. Furnace oil is too expensive and generally reserved for other specialized heating tasks. Option C correctly identifies blast furnace gas and mixed gas as the standard fuels.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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