F - Mech Eng,Light,Heat,Weapons – 22 – B
Patent
F - Mech Eng,Light,Heat,Weapons
22
B
122/48, 110/6
F22B 5/00 (2006.01)
Patent
CA 1193487
ABSTRACT A steam generating furnace which burns high moisture content fuel has a panel of heat absorbing tubes dividing it into two vertical interconnecting passageways: (a) a combustion chamber for burning the predried fuel and (b) a drying shaft for extracting moisture from the fuel. Wet fuel is introduced near the top of the drying shaft. As it falls it is dried by some of the hot gases diverted from the top of the combustion chamber into the top of the drying shaft. The cooling of the hot combustion gases due to evaporation of moisture from the wet fuel causes a difference in density between the gases in the two passageways, creates a natural, unidirectional circulation of part of the combustion gases from the top of the combustion chamber to the drying shaft. Predrying the wet fuel causes the fuel to burn faster and hotter thereby producing a stable and efficient combustion of the wet fuel at higher specific combustion rates. Recirculation of the cooled drying gas through the combus- tion chamber reduces the generation and emission of particulate and gaseous pollutants.
439144
Hochmuth Frank W.
Osler Hoskin & Harcourt Llp
LandOfFree
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