Record Display for the EPA National Library Catalog


Main Title Feasibility of a Regenerative High Temperature Amine Absorption Process for the Control of Sulfur Dioxide Emissions from Stack Gases.
Author Beutne, Heinz P. ; Niesse, Walter R. ; Hale, Henry E. ; Emerso, William S. ;
CORP Author Little (Arthur D.), Inc., Cambridge, Mass.
Year Published 1968
Report Number ADL-C-69983; PH-86-68-57;
Stock Number PB-180 233
Additional Subjects ( Sulfur compounds ; Absorption) ; ( Waste gases ; Sulfur compounds) ; High-temperature research ; Pyrolysis ; Amines ; Ion exchange ; Chemical precipitation ; Air pollution ; Chemical engineering ; Cost effectiveness ; Disproportionation ; Sulfur dioxide ; Tetraethylene pentamines ; Polythionates
Library Call Number Additional Info Location Last
NTIS  PB-180 233 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 86p
This report is directed toward elucidating the irreversible reactions in the amine-sulfur dioxide system and explores potential methods of chemically recovering the sulfur values. This effort is successful insofar as insight is gained into the reactions of sulfur dioxide in amines at elevated temperatures and a better perspective of the required recovery processes is achieved. Furthermore, in order to gain a perspective of the economics of the modified amine process, engineering cost estimates are carried out for potential process schemes involving chemical recovery. A significant result of this research work was the observation of the disproportionation of the absorbed sulfur dioxide in the amine into di- and polythionates, for example, according to the following overall equation 20 SO2 + 8 H2O yields 6 S2O6(2-) + S3O6(2-) + S5O6(2-) + 16 H(+). This reaction might have ramifications extending to a variety of sulfur dioxide sorption processes in the temperature range of stack gases (200 to 350F). This report, therefore, includes both a discussion of the evidence for this reaction occurring in the amine system and a brief review of some known chemistry of the sulfur species produced. (Author)