The Performance of Regeneration for Modified Semi-Coke Supported (Fe, Zn, ce) Sorbents

Abstract:

In this study, the regeneration behavior of modified semi-coke supported (Fe, Zn, Ce) sorbents were investigated using a fixed bed reactor. The effects of the regeneration temperature, space velocity and oxygen concentration have been considered in order to obtain suitable regeneration conditions. The most suitable regeneration conditions were obtained including 650°C regeneration temperature, 4vol.% of oxygen content and 4000h-1 of space velocity. Typical properties of the sorbents before and after regeneration were characterized using XRD and BET methods. Then the sorbents were tested 3 cycle experiments of desulfurization and regeneration for the purpose of duration test. The breakthrough curves changed slightly and the sulfur capacity only decreased 14.2%, it proved that the sorbents had good regenerability, which implied that the sorbents could be used for hot gas desulfurization.

• Periodical: Advanced Materials Research (Volumes 524-527)
• Pages: 1140-1144
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.524-527.1140
• Online since: May 2012
• Authors: Jie Mi, Meng Yu, Su Li Shang
• Keywords: Hot Coal Gas, Modified Semi-Coke, Regeneration, Sorbent, Sulfurization

References

[1] M.A. Ahmed, L. Alonso, J.M. Palacios and C. Cilleruelo: Solid State Ionics. Vol. 138 (2000), pp.51-62

[2] J. Huang, J. Zhao, X. Wei, Y. Wang and X. Bu: Powder Technol. Vol. 180 (2008), pp.196-202

[3] G.D. Focht, P.V. Ranade and D.P. Harrison: Chem. Eng. Sci. Vol. 44 (1989), pp.2919-2926

[4] L.D. Gasper-Galvin, A.T. Atimatay and R.P. Gupta: Ind. Eng. Chem. Res. Vol. 37 (1998), pp.4157-4166

[5] K. Jothimurugesan and S.K. Gangwal: Ind. Eng. Chem. Res. Vol. 37 (1998), pp.1929-1933

[6] S.S. Tamhankar, M. Bagajenicz, G.R. Gavalas, P.K. Sharma and S.M. Flytzanl: Ind. Eng. Chem. Process Des. Dev. Vol. 25 (1986), pp.429-437

[7] S.M. Flytzani, R.G. Gavalas and S.S. Tamhankar, U.S. Patent 4,729,889. (1988)

[8] H.S. Lee, M.P. Kang and Y.M. Rhee: In: The 7th International Joint Symposium of Beijing University of Chemical Technology and Chungnam National University, Beijing, China (2001)

[9] W. Mojtahedi, K. Salo and J. Abbasina: Fuel Process Technol. Vol. 37 (1994), pp.53-65

[10] S. Lew, A.F. Sarofim and S.M. Flytzani: Chem. Eng. Sci. Vol. 47 (1992), pp.1421-1431

[11] M.C. Woods, S.K. Gangwal, D.P. Harrison and K. Jothimurugesan: Ind. Eng. Chem. Res. Vol. 30 (1991), pp.100-107

[12] F.A. Jale and A. Ates: Gas Sep. Purif. Vol. 9 (1995), pp.17-25

[13] S. Lew, K. Jothimurugesan and S.M .Flytzani: Ind. Eng. Chem. Res. Vol. 28 (1989), pp.535-541

[14] T.J. Lee, W.T. Kwon and C.C. Won: Korean J. Chem. Eng. Vol. 14 (1997), pp.513-518

[15] J. Mi, Y. Zhang, R. Wang, T. Guo and X. Liu, in: Symposium Schedule for 8th International Symposium on Gas Cleaning at High Temperatures, Shanxi, China (2010)

[16] J. Zhang, Y. Wang, R. Ma and D. Wu: Fuel Processing Technology. Vol. 84 (2003), pp.217-227

[17] G.D. Focht, P.V. Ranrde and D.P. Horrison: Chem. Eng. Sci. Vol. 44 (1989), pp.2919-2926

[18] W.J.W. Bakker, F. Kapteijn and J.A. Moulijn: Chem. Eng. J. Vol. 96 (2003), pp.223-235

[19] J.T. Zhao, J.J. Huang, X.F. Wei, Y.T. Fang and Y. Wang: J. Fuel. Chem. Tech. Vol. 35 (2007), pp.66-71.