Identify the furnace that is not typically induced-draught Which of the following is not generally operated with induced-draught (ID) fans drawing flue gases?

Introduction / Context: Draught systems move combustion gases through furnaces. Many modern units use induced-draught (ID) fans to pull flue gases, stabilizing furnace pressure and improving control. Some traditional furnaces, however, often rely primarily on natural draught via a stack.

Given Data / Assumptions:

• We compare typical practice, not every customized installation.
• “Induced draught” means a fan downstream of the combustion zone pulls gases to the stack.

Concept / Approach: High-pressure boilers commonly use ID fans for tight pressure control and heat-recovery train performance. Sintering furnaces likewise use strong suction for gas flow through the bed. Blast furnace stoves, in classical layouts, frequently depend on chimney natural draught and cycling valves; while fans can be present in modern plants, they are not the textbook example of induced-draught operation.

Step-by-Step Solution:

Verification / Alternative check: Process schematics show ID fans on boilers and sinter strands. Stove diagrams focus on checkerwork, burners, and chimneys rather than obligatory ID fans.

Why Other Options Are Wrong:

Common Pitfalls: Assuming every modern furnace has ID; some legacy or specific regenerators rely on natural draught.

Final Answer: Blast furnace stove