Commenced in January 2007
Paper Count: 31105
Reactive Absorption of Hydrogen Sulfide in Aqueous Ferric Sulfate Solution
Abstract:Many commercial processes are available for the removal of H2S from gaseous streams. The desulfurization of gas streams using aqueous ferric sulfate solution as washing liquor is studied. Apart from sulfur, only H2O is generated in the process, and consequently, no waste treatment facilities are required. A distinct advantage of the process is that the reaction of H2S with is so rapid and complete that there remains no danger of discharging toxic waste gas. In this study, the reactive absorption of hydrogen sulfide into aqueous ferric sulfate solution has been studied and design calculations for equipments have been done and effective operation parameters on this process considered. Results show that high temperature and low pressure are suitable for absorption reaction. Variation of hydrogen sulfide concentration and Fe3+ concentration with time in absorption reaction shown that the reaction of ferric sulfate and hydrogen sulfide is first order with respect to the both reactant. At low Fe2(SO4)3 concentration the absorption rate of H2S increase with increasing the Fe2(SO4)3 concentration. At higher concentration a decrease in the absorption rate was found. At higher concentration of Fe2(SO4)3, the ionic strength and viscosity of solution increase remarkably resulting in a decrease of solubility, diffusivity and hence absorption rate.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1081969Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 3640
 H. ter Maat, J. A. Hogendoorn, G. F. Versteeg , The removal of hydrogen sulfide from gas streams using an aqueous metal sulfate absorbent Part I. The absorption of hydrogen sulfide in metal sulfate solutions, Separation and Purification Technology 43, 2005, pp 183-197.
 S. Ebrahimi, R. Kleerebezem, M. C. M. van Loosdrecht, J. J. Heijnen (2003). Kinetics of the reactive absorption of hydrogen sulfide into aqueous ferric sulfate solutions, Chemical Engineering Science 58, 2003, pp 417-427.
 D. L. HEGU and G. J. NAGL. Consider optimized iron-redox process to remove sulfur, Hydrocarbon Processing, January, 2003, pp 53-57.
 R. K. Sinnott, Coulson & Richardson-s chemical engineering, vol. 6, Fourth edition, Elsevier Butterworth-Heinemann, 2005.
 Nikolai Kolev, Packed Bed Column For absorption, desorption, rectification and direct heat transfer, First edition, Elsevier, 2006.
 J. F. Richardson and J. R. Harker, Coulson and Richrdson-s Chemical Engineering, Fifth edition, Butterworth-Heinemann, 2002.
 Levenspiel. Octave, Chemical Reaction Engineering, Third edition, John Wiley & Sons, 1999.
 Robert E. Treybal, Mass Transfer Operations, Third edition, Mc Grow- Hill, 1980.
 Robbert H. Perry, Don W. Green, Perry-s Chemical Engineers- Handbook, Seventh edition, Mc Grow-Hill Professional, New York, 1997.