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Dissolution Rate of Limestone for Wet Flue Gas Desulfurization in the Presence of Citric Acid

[+] Author Affiliations
Rui-tang Guo, Wei-guo Pan, Xiao-bo Zhang, Jiang Wu, Jian-xing Ren

Shanghai University of Electric Power, Shanghai, P. R. China

Paper No. POWER2011-55403, pp. 191-195; 5 pages
  • ASME 2011 Power Conference collocated with JSME ICOPE 2011
  • ASME 2011 Power Conference, Volume 1
  • Denver, Colorado, USA, July 12–14, 2011
  • ISBN: 978-0-7918-4459-5
  • Copyright © 2011 by ASME


Dissolution rate of limestone for wet flue gas desulfurization in the presence of citric acid was measured by pH-stat method. It was found that limestone dissolution rate in the presence of citric acid was controlled by mass transfer. As can be seen from the experimental results, in the presence of citric acid, limestone dissolution rate increased with increasing stirring speed and reaction temperature. When pH value was greater than or equal to 5.5, due to the formation of calcium citrate, citric acid would inhibit the dissolution process of limestone. And the inhibition effect was more obvious at higher pH value.

Copyright © 2011 by ASME



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