Liquid heaters and vaporizers – Miscellaneous
Patent
1980-08-27
1982-07-13
Camby, John J.
Liquid heaters and vaporizers
Miscellaneous
110245, 110263, 110347, 122195, 16510416, 431 7, 431170, B09B 300
Patent
active
043388876
ABSTRACT:
A fluid bed heater or vaporizer unit has a generally cylindrical configuration with its major axis horizontally 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.
REFERENCES:
patent: 2610842 (1952-09-01), Schoenmakers et al.
patent: 3565022 (1971-02-01), Bishop
patent: 3648666 (1972-03-01), Foldes et al.
patent: 3859963 (1975-01-01), Roberts et al.
patent: 3893426 (1975-07-01), Bryers
patent: 4240377 (1980-12-01), Johnson
patent: 4267801 (1981-05-01), Robinson
patent: 4273073 (1981-06-01), Robinson
patent: 4301749 (1981-11-01), Urquhart
patent: 4306854 (1981-12-01), Dawson
Camby John J.
Dorr-Oliver Incorporated
Kearns Burtsell J.
Snyder Harold M.
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