Method of regulating the amount of underfire air for combustion of wood fuels in spreader-stroke boilers

Patent · Tue Jan 01 04:00:00 EST 1980

OSTI ID:863752

Tuttle, Kenneth L ^[1]

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1. Federal Way, WA

A method of metering underfire air for increasing efficiency and reducing particulate emissions from wood-fire, spreader-stoker boilers is disclosed. A portion of the combustion air, approximately one pound of air per pound of wood, is fed through the grate into the fuel bed, while the remainder of the combustion air is distributed above the fuel in the furnace, and the fuel bed is maintained at a depth sufficient to consume all oxygen admitted under fire and to insure a continuous layer of fresh fuel thereover to entrap charred particles inside the fuel bed.

• Research Organization: Oregon State Univ., Corvallis (USA)
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4241672
• OSTI ID: 863752
• Country of Publication: United States
• Language: English

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