Record Display for the EPA National Library Catalog

RECORD NUMBER: 33 OF 62

Main Title Flue Gas Desulfurization Pilot Study. Phase I. Survey of Major Installations. Appendix 95-G. Double Alkali/Gypsum Flue Gas Desulfurization Process.
Author Princiotta, Frank ; Gerstle, Richard W. ; Schindler, Edmund ;
CORP Author NATO Committee on the Challenges of Modern Society, Brussels (Belgium). ;Environmental Protection Agency, Washington, DC. Office of Research and Development. ;PEDCo-Environmental, Inc., Cincinnati, OH.
Year Published 1979
Stock Number PB-295 008
Additional Subjects Air pollution control ; Flue gases ; Surveys ; Absorbers(Materials) ; Gypsum ; Sulfur dioxide ; Industrial wastes ; Combustion products ; Cost analysis ; Process charting ; Design criteria ; Performance evaluation ; Scaling ; Technology ; pH ; Sulfates ; Pilot plants ; Dual alkali scrubbing ; Chloride ions ; NATO furnished
Holdings
Library Call Number Additional Info Location Last
Modified		 Checkout
Status
NTIS  PB-295 008 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 79p
Abstract
The double alkali/gypsum of flue gas desulfurization (FGD) was developed to reduce scaling and plugging problems associated with direct lime (CaO) or limestone (CaCO3) systems. One of the first large-scale installations of this process to control SO2 emissions and produce gypsum (CaSO4) was put in operation in 1973 at the Showa Denko plant in Chiba, Japan. By December 1977, 25 systems were operating, all in Japan. The double alkali system is especially applicable in situations requiring high (98 percent) SO2 removal, high availability, and low maintenance. The process is particularly applicable to areas where lime/limestone resources are abundant and where gypsum is a marketable by-product. If it is not marketable, gypsum and fly ash can be used as landfill to form a base with load-bearing capacities sufficient for some construction.