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RECORD NUMBER: 41 OF 45

OLS Field Name OLS Field Data
Main Title Study of Characterization and Control of Air Pollutants from a Fluidized-Bed Combustion Unit. The Carbon-Burnup Cell.
Author Robiso, E. B. ; Glen, R. D. ; Ehrlic, S. ; Bisho, J. W. ; Gordo, J. S. ;
CORP Author Pope, Evans and Robbins, Inc., Alexandria, Va.
Year Published 1972
Report Number CPA-70-10; 1170;
Stock Number PB-210 828
Additional Subjects ( Fluidized bed processors ; Combustion products) ; ( Coal ; Fluidized bed processors) ; ( Fly ash ; Combustion) ; ( Air pollution ; Combustion products) ; Design criteria ; Furnaces ; Pilot plants ; Injection ; Limestone ; Mathematical ; Particle size ; Performance evaluation ; Process variables ; Temperature ; Nitrogen oxides ; Sulfur dioxide ; Cost estimates ; Air pollution control ; Limestone injection
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB-210 828 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 241p
Abstract
In earlier work, it was found that sulfur oxide emissions could be markedly reduced by injecting finely divided limestone into a coal-burning, fluidized bed operating at 1500F to 1600F and with about 3% residual oxygen in the flue gas. However, with 3% residual oxygen in the flue gas, an economically unacceptable fraction of the input coal's fuel value would be lost as carbon in the flyash that is blown out of the furnace. A comprehensive search for methods to reduce the loss of fuel, which ranged as high as 15%, led to the invention of the Carbon-Burnup Cell. The Carbon-Burnup Cell is a region of a fluidized bed boiler in which the fuel is the carbon bearing flyash carried out of the adjacent coal burning regions of the boiler. The report describes an effort to produce design criteria for an effective Carbon-Burnup Cell. The experimental work was conducted in two different test rigs. The more basic work, that which led to a statistically derived performance model, was done in a separate column which depends on an external source for its fuel supply. The second set of tests was performed in an actual fluidized-bed boiler, generating the flyash which is then immediately burned in its own internal flyash fired section, the prototype Carbon-Burnup Cell. The work in the boiler led to engineering insights on the design requirements for a commercial fluidized-bed boiler which included a Carbon-Burnup Cell. A performance model and costs are included.