Full Text:   <2919>

CLC number: X5; X7

On-line Access: 

Received: 2008-07-03

Revision Accepted: 2008-10-15

Crosschecked: 0000-00-00

Cited: 9

Clicked: 3612

Citations:  Bibtex RefMan EndNote GB/T7714

-   Go to

Article info.
1. Reference List
Open peer comments

Journal of Zhejiang University SCIENCE A 2008 Vol.9 No.11 P.1601~1613

http://doi.org/10.1631/jzus.A0820507


CFD simulation with enhancement factor of sulfur dioxide absorption in the spray scrubber


Author(s):  Xiang GAO, Wang HUO, Zhong-yang LUO, Ke-fa CEN

Affiliation(s):  State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   xgao@cmee.zju.edu.cn

Key Words:  SO2 absorption, Limestone dissolution, Enhancement factor, Mass transfer, Concentration profile


Xiang GAO, Wang HUO, Zhong-yang LUO, Ke-fa CEN. CFD simulation with enhancement factor of sulfur dioxide absorption in the spray scrubber[J]. Journal of Zhejiang University Science A, 2008, 9(11): 1601~1613.

@article{title="CFD simulation with enhancement factor of sulfur dioxide absorption in the spray scrubber",
author="Xiang GAO, Wang HUO, Zhong-yang LUO, Ke-fa CEN",
journal="Journal of Zhejiang University Science A",
volume="9",
number="11",
pages="1601~1613",
year="2008",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A0820507"
}

%0 Journal Article
%T CFD simulation with enhancement factor of sulfur dioxide absorption in the spray scrubber
%A Xiang GAO
%A Wang HUO
%A Zhong-yang LUO
%A Ke-fa CEN
%J Journal of Zhejiang University SCIENCE A
%V 9
%N 11
%P 1601~1613
%@ 1673-565X
%D 2008
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A0820507

TY - JOUR
T1 - CFD simulation with enhancement factor of sulfur dioxide absorption in the spray scrubber
A1 - Xiang GAO
A1 - Wang HUO
A1 - Zhong-yang LUO
A1 - Ke-fa CEN
J0 - Journal of Zhejiang University Science A
VL - 9
IS - 11
SP - 1601
EP - 1613
%@ 1673-565X
Y1 - 2008
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A0820507


Abstract: 
A model describing the absorption process of SO2 into limestone slurry with a spray scrubber is presented. Both the physical performance of the spray liquid in the scrubber and the involved chemical reactions are analyzed in the model. A continuous concentration change of H+ was solved by iterative coupling using Matlab, and it was found that there was a remarkable influence on the concentration of the other elements in the process of SO2 absorption. The calculations show that the enhancement factor exponentially grows with an increasing value of pH and logarithmically decays with an increasing value of the driving force. To verify the accuracy of the model, experiments were also carried out, and the results suggest that the model, after combining the physical performance of the spray and the enhancement factor, can more precisely describe SO2 absorption in a spray scrubber. Furthermore, a commercial computational fluid dynamics (CFD) tool is used to perform several simulations which describe and clarify the effects of variables on SO2 absorption. The results of numerical simulation can provide a basis for further design and optimization of the scrubber.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

[1] Akbar, M.K., Yan, J., Ghiaasiaan, S.M., 2003. Mechanism of gas absorption enhancement in a slurry droplet containing reactive, sparingly soluble micro particles. International Journal of Heat and Mass Transfer, 46(24):4561-4571.

[2] Alexandrova, S., Marion, M., Lepinasse, E., Saboni, A., 2004. Mass transfer modeling of SO2 into large drops. Chemical Engineering & Technology, 27(6):676-680.

[3] Altwicker, E.R., Lindhjem, C.E., 1988. Absorption of gases into drops. AIChE Journal, 34(2):329-332.

[4] Amokrane, H., Caussade, B., 1999. Gas absorption into a moving spherical water drop. Journal of the Atmospheric Sciences, 56(12):1808-1829.

[5] Bausach, M., Pera, T.M., Fite, C., 2006. Water-induced rearrangement of Ca(OH)2 reacted with SO2. AIChE Journal, 52(8):2876-2886.

[6] Bird, R.B., Stewart, W.E., Lightfoot, E.N., 2002. Transport Phenomena (2nd Edition). Wiley, New York.

[7] Brogren, C., Karlsson, H.T., 1997. Modeling the absorption of SO2 in a spray scrubber using the penetration theory. Chemical Engineering Science, 52(18):3085-3099.

[8] Ebrahimi, S., Kleerebezem, R., Loosdrecht, M.C., Heijnen, J.J., 2003. Kinetics of the reactive absorption of hydrogen sulfide into aqueous ferric sulfate solutions. Chemical Engineering Science, 58(2):417-427.

[9] Epstein, M., 1977. EPA Alkali Scrubbing Test Facility: Summary of Testing Through October 1974. U.S. EPA 600/ 7-7-105.

[10] Gerbec, M., Stergarsek A., Kocjancic R., 1995. Simulation model of wet flue gas desulphurization plant. Computers and Chemical Engineering, 19(1):283-286.

[11] Gomez, A., Fueyo, N., Tomas, A., 2007. Detailed modeling of a flue-gas desulfurisation plant. Computers and Chemical Engineering, 31(11):1419-1431.

[12] Haider, A., Levenspiel, O., 1989. Drag coefficient and terminal velocity of spherical and nonspherical particles. Powder Technology, 58(1):63-70.

[13] Han, K.S., Chung, M.K., Sung, H.J., 1991. Application of Lumley’s drag reduction model to two-phase gas-particles flow in pipe. Journal of Fluids Engineering, 113(1):130-136.

[14] Hikita, H., Asia, S., Takatsuka, T., 1972. Gas absorption with a two step instantaneous chemical reaction. The Chemical Engineering Journal, 4(1):31-40.

[15] Kadja, M., Bergeles, G., 2003. Modeling of slurry droplet drying. Applied Thermal Engineering, 23(7):829-844.

[16] Kota, K., Langrish, T.A.G., 2007. Prediction of wall deposition behavior in a pilot-scale spray dryer using deposition correlations for pipe flows. Journal of Zhejiang University SCIENCE A, 8(2):301-312.

[17] Lancia, A., Musmarra, D., Pepe, F., Volpicelli, G., 1994. SO2 absorption in a bubbling reactor using limestone suspensions. Chemical Engineering Science, 49(24):4523-4532.

[18] Lancia, A., Musmarra, D., Pepe, F., 1996. Uncatalyzed heterogeneous oxidation of calcium bisulfite. Chemical Engineering Science, 51(16):3889-3896.

[19] Lancia, A., Musmarra, D., Pepe, F., 1997. Modeling of SO2 absorption into limestone suspensions. Industrial & Engineering Chemistry Research, 36(1):197-203.

[20] Lopez de Bertodano, M., Lee, S.J., Lahey, R.T., Drew, D.A., 1990. The prediction of 2-phase turbulence and phase distribution phenomena using a Reynolds stress model. Journal of Fluids Engineering, 112(1):107-114.

[21] Muginstein, A., Fichman, M., Gutfinger, C., 2001. Gas absorption in a moving drop containing suspended solids. International Journal of Multiphase Flow, 27(6):1079-1094.

[22] Nagel, D., Richard, K.D., Lintnz, H.G., Roizard, C., Lapicque, F., 2002. Absorption of sulfur dioxide in N-formylmorpholine: investigations of the kinetics of the liquid phase reaction. Chemical Engineering Science, 57(22):4883-4893.

[23] Olausson, S., Wallin, M., Bjerle, I., 1993. A model for absorption of sulphur dioxide into a limestone slurry. The Chemical Engineering Journal, 51(2):99-108.

[24] Pinsent, B.R.W., Pearson, L., Roughton, F.J.W., 1956. The kinetics of the combination of carbondioxide with hydroxide ions. Transactions of the Faraday Society, 52(1):1512-1522.

[25] Retieb, S., Guiraud, P., Angelov, G., Gourdon, C., 2007. Hold-up within two-phase countercurrent pulsed columns via Eulerian simulations. Chemical Engineering Science, 62(17):4558-4572.

[26] Romain, L., Arsam, B., Laurent, S., Yannick, J.H., Rachid, O., Badie, I.M., 2008. An algorithm for predicting the hydrodynamic and mass transfer parameters in bubble column and slurry bubble column reactors. Fuel Processing Technology, 89(1):322-343.

[27] Saboni, A., Alexandrova, S., 2001. Sulfur dioxide absorption and desorption by water drops. Chemical Engineering Journal, 84(3):577-580.

[28] Scala, F., D′Ascenzo, M., Lancia, A., 2004. Modeling flue gas desulfurization by spray-dry absorption. Separation and Purification Technology, 34(1-3):143-153.

[29] Sheng, Y.L., Wen, D.X., 2006. Modeling and simulation of a bubbling SO2 absorber with granular limestone slurry and an organic acid additive. Chemical Engineering & Technology, 29(10):1167-1173.

[30] Stromberg, A.M., 1992. Prospects for Further Development of Spray-scrubbing. PhD Thesis, University of Lund.

[31] Vandu, C.O., Berg, B.V.D., Krishna, R., 2005. Gas-liquid mass transfer in a slurry bubble column at high slurry concentrations and high gas velocities. Chemical Engineering & Technology, 28(9):998-1002.

[32] Yeh, N.K., Rochelle, G.T., 2003. Liquid-phase mass transfer in spray contactors. AIChE Journal, 49(9):2363-2373.

[33] Zhang, Q.Y., Wei, Y.M., Chen, Y.X., Guo, H., 2007. Environmental damage costs from fossil electricity generation in China, 2000-2003. Journal of Zhejiang University SCIENCE A, 8(11):1816-1825.

Open peer comments: Debate/Discuss/Question/Opinion

<1>

Please provide your name, email address and a comment





Journal of Zhejiang University-SCIENCE, 38 Zheda Road, Hangzhou 310027, China
Tel: +86-571-87952783; E-mail: cjzhang@zju.edu.cn
Copyright © 2000 - Journal of Zhejiang University-SCIENCE