Question

Bleeder valves in the blast furnace is provided at:

• A. Below mantle region
• B. Below stack region
• C. Top of stack region
• D. Top of uptakes

Hint:

Bleeder valves act as safety vents in blast furnaces and are located at the \textbf{top of the uptakes} to release excess gas pressure.

Answer 1

The Correct Option is D

Step 1: Purpose of Bleeder Valves in Blast Furnaces
Bleeder valves are safety devices installed in blast furnaces to release excess pressure or gas in emergency situations. They help prevent structural damage or explosions by allowing sudden venting of gas buildup. Step 2: Location of Bleeder Valves
Bleeder valves are specifically located at the top of the uptakes, which are the ducts that carry gas from the top of the furnace to the gas cleaning system. This location allows: - Immediate release of excess gas pressure from the furnace top. - Safe management of sudden pressure surges during irregular operation. Step 3: Elimination of Other Options
- Below mantle or stack regions are not suitable for gas pressure relief.
- Top of stack is not the correct position for emergency venting — it is the uptakes that carry gases from the stack. Conclusion: Bleeder valves are provided at the top of the uptakes in a blast furnace for emergency pressure relief.