F - Mech Eng,Light,Heat,Weapons – 22 – B
Patent
F - Mech Eng,Light,Heat,Weapons
22
B
122/63
F22B 13/00 (2006.01) F22B 31/00 (2006.01) F23C 10/14 (2006.01)
Patent
CA 1143615
US-1985-01 LOW PROFILE FLUID BED HEATER OR VAPORIZER ABSTRACT OF THE DISCLOSURE A fluid bed heater ox vaporizer unit has a generally cylindrical configuration with its major axis horizon- tally disposed. A mixture of coal and limestone is fed into the elongated fluidized bed within the unit for combustion; the limestone being present to minimize sulfur emissions due to the sulfur present in the coal. The wall of the unit in the region of the freeboard is lined with horizontally disposed heat exchange tubing. The delivery of air to the fluidized bed is regulated so as to establish a combustion zone of high turbulence and one or more heat transfer zones of lower turbulence. A plurality of heat exchange tubes are located in the heat transfer zone or zones and within the expanded bed level of the fluidized bed but above the region occupied by the slumped bed. Economizer heat exchange coils may be located in the passageway for exhaust gases.
361890
Dorr-Oliver Incorporated
Fetherstonhaugh & Co.
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