A Combined Ca(OH)2/NH3 Flue Gas Desulfurization Process for High Sulfur Coal: Results of a Pilot Plant Study |
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| Authors: | Arijit Pakrasi Wayne T. Davis Gregory D. Reed Timothy C. Keener |
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| Affiliation: | 1. The University of Tennessee , Knoxville , Tennessee , USA;2. The University of Cincinnati , Cincinnati , Ohio , USA |
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| Abstract: | ![]()
The removal of SO2 with atomization of a slaked lime slurry and supplemental injection of gaseous NH3 were tested in a conventional spray dryer/baghouse system for SO2 concentrations of 2000 ppm and 3000 ppm and a 30° F approach to saturation. Results at 3000 ppm of SO2 showed an average SO2 removal efficiency of 90.3 percent at a combined stoichiometric ratio of 0.95-1.10 and an average overall sorbent utilization of 91.6 percent. The overall molal ratio of NH3/SO2 reaction was found to be 2:1 under the test conditions Particle size analyses, and EP toxicity tests were conducted on the products of the reactions. |
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