Sorbent utilization studies using a mini-pilot spray dryer. Final report, 1 September 1992--31 August 1993 [electronic resource].
- Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 1993.
- Physical Description:
- 50 pages : digital, PDF file
- Additional Creators:
- University of Cincinnati. Department of Civil and Environmental Engineering and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- The main body of the report consists of four parts: 1. additives to change process chemistry for SO₂ absorption by Ca(OH)₂ slurry; 2. recycle tests and hydration of fly ash with Ca(OH)₂ to increase reactivity; 3. limestone as an alternative sorbent and additive effects; 4. physical and chemical model developments for some of the additive effects and spray dryer mathematical model application. As the concentration of SO₂ in the flue gases increases, the SO₂ removal efficiency will go down. Additives such as delinquent salts (NaOH, NaCl, and NaHCO₃) have been shown to improve SO₂ uptake, and these additive tests have indicated that SO₂ uptake may be increased by as much as 60% over baseline conditions. Other additives such as H₂O₂, sugar, and some organic acids which can change the chemical reaction processes are suggested and tested, and some promising results have been obtained. Recycle has been shown to increase sorbent utilization by allowing partially reacted sorbent to react further with the SO₂ in the flue gases. Two types of Ohio coal fly ashes have been extensively studied, and improvement of utilization in spray dryer flue gas desulfurization has been demonstrated. Limestone represents an area where significant cost savings can be realized. The spray dryer tests were designed to provide some results for understanding the magnitude of the limestone performance in the spray dryer system and the additive effects. The additive effects on increasing SO₂ absorption by Ca(OH)₂ slurry were investigated, and the chemical and physical properties of these tested additives were studied. Some models have been formed to explain the additive phenomena.
- Published through SciTech Connect., 09/30/1993., "ocdo--94012362", "TI94012362", Sanders, J.F.; Wang, J.; Keener, T.C.; Khang, S.J., Ohio Coal Development Office, Columbus, OH (United States), and Ohio State Government, Columbus, OH (United States)
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