||Reduction of Atmospheric Pollution by the Application of Fluidized-Bed Combustion.
Vogel, G. J. ;
Haas, M. ;
Shift, W. ;
Hiha, J. ;
Schoffstoll., C. B. ;
||Argonne National Lab., Ill.;Environmental Protection Agency, Washington, D.C.
||W-31-109-eng-38 ;EPA-IAG-0199(D); EPA/650/2-74-057;
Air pollution control ;
Sulfur dioxide ;
Fluidized bed combustion ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
A fluidized-bed combustion pilot plant and a fluidized-bed regenerator, both capable of operating at 10-atm pressure, have been tested and operated. In combustion of coal at 9-atm pressure and 1550F (843C), high (>90%) retention of sulfur in the fluidized bed of dolomite has been obtained with continous addition of fresh dolomite at a Ca/S ratio of 3. The NO level in the flue gas has been low, <150 ppm. Two favored methods for regenerating the sulfated dolomite have been studies: a one-step reductive decomposition of the CaSO4 to CaS at about 1700F followed by reaction of CaS with H2O/CO2 to release H2S.