Mathematical modeling for height of absorption region in spray tower for limestone-gypsum wet flue gas desulfurization

被引：0
作者：
机构：
[1] Department of Chemical Engineering,, Sichuan University, Chengdu , 610065, Sichuan
来源：
Ye, Shichao | 1600年 / Materials China卷 / 65期
关键词：
Design; Height; Mass transfer; Model; Spray tower; Wet flue gas desulfurization;
D O I：
10.3969/j.issn.0438-1157.2014.08.006
中图分类号：
学科分类号：
摘要：
Specific surface area and mass transfer rate in spray tower were studied by considering the forces acting on a droplet. Absorption region was divided into accelerating segment and constant speed segment, and a segmentation calculation model for the height of absorption region was developed, which was verified by the data of four industrial desulfurization systems. The effects of operating parameters on the height of absorption region were investigated. The results show that height of absorption region decreases with the decrease of spray density and pH value of absorbent, and increases with the decrease of droplet diameter, superficial gas velocity and inlet SO2 concentration. The desulfurization efficiency increases with the height of absorption region. When the desulfurization efficiency reaches above 90%, the height of absorption region only has a slightly influence on the efficiency. © All Rights Reserved.
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页码：2896 / 2901
页数：5
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共 24 条
  • [1] Frandsen J.B.W., Kiil S., Johnsson J.E., Optimisation of a wet FGD pilot plant using fine limestone and organic acids , 56, 10, pp. 3275-3287, (2001)
  • [2] Gutierrez Ortiz F.J., Vidal F., Ollero P., Salvador L., Cortes V., Pilot-plant technical assessment of wet flue gas desulfurization using limestone , 45, 4, pp. 1466-1477, (2006)
  • [3] Marocco L., Modeling of the fluid dynamics and SO<sub>2</sub> absorption in a gas-liquid reactor, 162, 1, pp. 217-226, (2010)
  • [4] Kallinikos L.E., Farsari E.I., Spartinos D.N., Papayannakos N.G., Simulation of the operation of an industrial wet flue gas desulfurization system , 91, 12, pp. 1794-1802, (2010)
  • [5] Zhong Y., Gao X., Huo W., Luo Z., Ni M., Cen K., A model for performance optimization of wet flue gas desulfurization systems of power plants , 89, 11, pp. 1025-1032, (2008)
  • [6] Gomez A., Fueyo N., Tomas A., Detailed modelling of a flue-gas desulfurisation plant , 31, 11, pp. 1419-1431, (2007)
  • [7] Zhang X., Du Y., Zheng Y., Kang S., One-dimensional numerical modeling of wet flue gas desulfurization process , Proceedings of the CSEE, 28, 14, pp. 15-19, (2008)
  • [8] Mondal M.K., Experimental determination of dissociation constant, Henry's constant, heat of reactions, SO<sub>2</sub> absorbed and gas bubble-liquid interfacial area for dilute sulphur dioxide absorption into water, Fluid Phase Equilib, 253, 2, pp. 98-107, (2007)
  • [9] Peng J., Ye S., Liu H., Jiang K., Experimental study on removal of SO<sub>2</sub> in flue gas by ammonia absorption method with wetted-wall column , Proceedings of the CSEE, 31, 17, pp. 55-58, (2011)
  • [10] Zhao J., Jin B., Zhong Z., Sun K., A study of experimental and reaction models for the spray tower of wet-method flue-gas desulfuration , Journal of Engineering for Thermal Energy and Power, 22, 4, pp. 457-462, (2007)
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