Record Display for the EPA National Library Catalog


Main Title Regenerative Limestone Process for Fluidized-Bed Coal Combustion and Desulfurization.
Author Hok, R. C. ; Nutki, M. S. ; Rut, L. A. ; Sha, H. ;
CORP Author Esso Research and Engineering Co., Linden, N.J. Government Research Lab.
Year Published 1974
Report Number GRUS.14GFGS.74; CPA-70-19; EPA-ROAP-21ADB-13; 650/2-74-001;
Stock Number PB-231 374
Additional Subjects Fluidized bed processing ; Combustion ; Coal ; Desulferization ; Combustion chambers ; Flue gases ; Limestone ; Regeneration(Engineering) ; Combustion products ; Sulfur dioxide ; Design ; Calcium oxides ; Calcium sulfates ; Air pollution control ; Limestone injection ; Dolomite
Library Call Number Additional Info Location Last
NTIS  PB-231 374 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 110p
The report gives results of an experimental study of the pressurized combustion of coal in a fluidized bed of limestone and regeneration of sulfated limestone. The study is part of a program to develop fluidized-bed coal combustion as a means of desulfurizing flue gas in-situ and generating clean power at low cost. The process, including regeneration of spent limestone by reduction to lime, produces a gas stream containing a sufficient concentration of SO2 to be fed to a by-product sulfur recovery unit. Initial SO2 removal rates were about 85%. The regeneration step was studied at pressures up to 10 atm and temperatures up to 2100F. High conversion of sulfated material to lime was achieved by injecting air into the bed, by forming adjacent reducing and oxidizing zones, and by minimizing formation of undesired CaS.