Desulphurization Characteristic of Industry Alkaline Wastes during Coal Combustion
- 1 School of Traffic and Vehicle Engineering, Shandong University of Technology, China
- 2 School of Energy and Power Engineering, Shandong University, China.
Abstract
The desulphurization characteristics of four sorts of industry alkaline wastes and one sort of limestone were studied by means of flue gas analyzer and the high temperature tube reactor. Pore structure and desulphurization product char-acteristic were investigated respectively by mercury porosimeter and XRD diffraction technology. The reasons why wastes and limestone hold the different desulphurization capability were deeply discussed. The result shows that white clay and carbide slag could capture the release of sulfur at 800-1100℃. Salt slurry and red mud could capture the re-lease of sulfur at first stage at 800-900℃. But when the experimental temperature rises to 1000℃, the sulfur capture abilities of them depress. Pore structures of waste are higher than that of limestone. This makes the sulfation reaction goes further. To sum up, wastes have better sulfur capture ability.
- C. M. Lu and Y. Z. Wang, “Study on evaluation regularities and absorption characteristics of sulfur during coal combustion,” Journal of Coal Science & Engineering, 4, pp. 80-86, 1999.
- J. Cheng, J. H. Zhou, and J. Z. Liu, “Dynamic characteristics of catalytic clean coal combustion with additives,” Proceedings of the CSEE, 22, pp. 128-131, 2002.
- J. N. Wang and D. F. Chen, “Experiments on the utilization of discards from the chemical industry substitutes for the conventional absorbents of desulfivrization,” Energy Research and Information, 16, pp. 45-48, 2000.
- S. Q. Cheng, Y. B. Feng, and C. M. Lu, “Study on the kinetics of desulphurization of shells,” Proceedings of the CSEE, 25, pp. 80-85, 2005.
- Y. Tan, C. T. Li, and G. M. Zeng, “Promotion effect of additives on sulfur capture during coal combustion with carbide slag,” Journal of Fuel Chemistry and Technology, 33, pp. 767-770, 2005.
- K. H. Han, J. L. Zhao, and C. M. Lu, “Kinetic analysis of the effect of additive onthe desulfurization activity,” Environmental sciences, 27, pp. 219-223, 2006.
- Z. S. Yuan, D. Y. Wu, and S. D. Wang, “Study on sulfur retention of integrated additive during coal combustion,” Journal Fuel Chemistry and Technology, 30, pp. 36-40. 2002.
- K. H. Han and C. M. Lu, “Study on the characteristics of sulfurous pollutant with different coal in one-dimensional flame,” Journal of China Coal Society, 29, pp. 594-597, 2004.
- G. A. Simons and A. R. Garman, “Small pore closure and the deaction of the limestone sulfation reaction,” AIChEJ, 32, pp. 1491-1499, 1986.
- S. K. Mahuli, R. Agnihotri, and C. Shriniwas, “Pore- structure optimization of calcium carbonate for enhanced sulfation,” AIChEJ, 43, pp. 2323-2335, 1997.