🔍 Key Concepts

• Boiler combustion air pressure and its effect on flame stability • How steam soot blowers remove soot from boiler tubes • What happens to the fire in the furnace when steam is introduced without enough air

💭 Think About

• Think about what extra combustion air does to the flame when a disturbance (like steam jets) enters the furnace. • Consider whether higher air pressure directly helps the physical removal of soot, or if the soot is mainly removed by the velocity and impact of the steam jets themselves. • Ask yourself what risk is created when a large amount of steam is blown into the furnace and how increased air pressure might counter that risk.

✅ Before You Answer

• Confirm whether steam or air is the primary cleaning medium that actually knocks soot off the tubes. • Decide if increasing combustion air pressure would realistically improve soot removal, or if it is more about maintaining proper combustion during soot blowing. • Verify what the main safety concern is during soot blowing: loss of flame, soot removal efficiency, or something else.