KINETIC STUDY OF SULFUR DIOXIDE ABSORPTION INTO DOLOMITE-BRUCITE SUSPENSIONS
DOI:
https://doi.org/10.24193/subbchem.2019.2.29Keywords:
dolomite-brucite suspension, sulfur dioxide, chemisorption, activation energy, macro-kinetic mechanismAbstract
The influence of the dolomite-brucite concentration and temperature on the global process of sulfur dioxide, SO2, absorption into dolomite-brucite suspensions was established. According to the proposed macro-kinetic model, the chemical reaction between H2SO3 and MeCO3 takes place into the adsorbed layer, at the outer surface of the granules. The low values of the activation energies obtained, Ea << 25.1 kJ/mol, confirmed for working conditions, that the global chemisorption process was limited to diffusion stage. At suspension concentrations lower than 5% and high temperatures, the chemisorption was carried out according to the shrinking core model without crust, when the diffusion of H2SO3 through the liquid phase is the limitative stage. At concentrations higher than 10%, the chemisorption was carried out according to the unreacted core model with crust formation, when the diffusion of H2SO3 through the crust of products remains the limitative phenomenon.
References
J. B. W. Frandsen; S. Kiil; J. E. Johansson; Chem. Eng. Sci., 2001, 56, 3275-3287
Y. S. Kang, S. K. Sung. S.C. Hong; J. Ind. Eng. Chem., 2015, 30, 197-203
F. J. Gutierrez Ortiz; F. P. Vidal; L. S. Ollero; V. Cortes; Ind. Eng. Chem. Res., 2006, 45, 1466-1477
I. Hrastel; M. Gerbec; A. Stergaršek; Chem. Eng. & Technol.; 2007, 30, 220-233
Y. Wu; Q.Li; F. Li; Chem. Eng. Sci., 2007, 62, 1814-1824
X. Li; C. Zhu; Y. Ma; Front. Chem. Sci. Eng., 2013, 7, 185-191
G. Muthuraman; Moon Il-Shik; J. Ind. Eng. Chem, 2012, 18, 1540-1550
T. Hlincik; P. Buryan; Fuel Process. Technol.; 2013, 111, 62-67
T. Hlincik; P. Buryan; Fuel; 2013, 104, 208-215
R. Valle-Zermeño; J. Formosa; J. M. Chimenos; Rev. Chem. Eng., 2015, 31, 303-310
S. C. Stultz; J. B. Kitto; Steam: its generation and use, Ed. Babcock & Wilcox, Barberton, Ohio, 2005, Chapter 1, pp. 1-17
S. Shafiee; E. Topal; Energy Policy, 2008, 36, 775-786
A. Kohl; R. Nielsen; Gas purification, 5th Edition, Gulf Publishing Company, Elsevier, Houston, Texas, 1997, Chapter 1, pp. 466-670
N. Karatepe; Energy Sources; 2000, 22, 197-206
A. Gómez; N. Fueyo; A. Tomás; Comput. Chem. Eng. 2007, 31, 1419-1431
C. Brogren; H. T. Karlsson, Chem. Eng. Sci, 1997, 52, 3085-3099
Y. Zhong; X. Gao; W. Huo; Z. Y. Luo; M. J. Ni; K. F. Cen; Fuel Process. Technol., 2008, 89, 1025-1032
B. Dou; W. Pan; Q. Jin; W. Li; Y. Wang; Energy Conv. Manage, 2009, 50, 2547-2553
P. Taerakul; P. Sun; D. W. Golightly; H. W. Walker; L. K. Weavers; B. Zand; T. Butalia; T. J. Thomas; H. Gupta; L. S. Fan; Fuel, 2007, 86, 541-553
L. E.Kallinikos; E. I. Farsari; D. N. Spartinos; N. G. Papayannakos; Fuel Process. Technol., 2010, 91, 1794-1802
P. A. Ramachandran; M. M. Sharma; Chem. Eng. Sci.,1969, 24, 1681-1686
C. Brogren; H. T. Karlsson; Ind. Eng. Chem. Res., 1997, 36, 3889-3897
S. Y. Liu; W. D. Xiao, Chem. Eng. Technol., 2006, 29, 1167-1173
B. Dou; Y. C. Byun; J. Hwang; Energy & Fuel, 2008, 22(2), 1041-1045
S. Kiil; M. L. Michelsen; K. Dam-Johansen; Ind. Eng. Chem. Res., 1998, 37, 2792-2806
S. Dragan; A. Ozunu; Central Eur. J. Chem., 2012, 10, 1556-1564
R. H. Perry; Perry's Chemical Engineering Handbook, Section 2, Physical and Chemical Data, 8th Edition, McGraw Hill., 2008, Chapter 2, pp. 121-124
M. R. Masson; H. D. Lutz; B. Engelen; Solubility Data Series, Sulfites, Selenites and Tellurites, Pergamon Press, Oxford, 1986, Chapter 26, pp.153-220
S. Dragan; Studia UBB Chemia, 2017, 62(4), 283-291.
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