Removal of SO2From Flue Gases Using Carbon at Elevated Temperatures
Open Access
- 1 November 1969
- journal article
- research article
- Published by Taylor & Francis in Journal of the Air Pollution Control Association
- Vol. 19 (11) , 856-861
- https://doi.org/10.1080/00022470.1969.10469349
Abstract
The interaction of a typical flue gas with active charcoal and bituminous coal char at temperatures between 600 and 800°C and atmospheric pressure has been studied. The SO2 in the flue gas interacts with the carbon to form primarily H2S, COS, and a carbon-sulfur surface complex. H2S and COS break through the carbon bed much in advance of SO2. At 800°C, sulfur retention on the bed exceeds at least 11% before SO2 breakthrough occurs. The reaction of H2S and COS with O2 over active charcoal at 100–140°C to produce sulfur, which deposits on the carbon, has also been studied and found to be feasible. As a result of this study, a new process is outlined for the removal of SO2 from flue gas, with the ultimate conversionKeywords
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