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Aqua ammonia process for simultaneous removal of CO 2 , SO 2 and NO x

Author

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  • Kevin P. Resnik
  • James T. Yeh
  • Henry W. Pennline

Abstract

Experimental research work in applying aqueous ammonia solution for the simultaneous reduction of acidic gaseous emission from fossil fuel-fired utility plants is currently being performed at the National Energy Technology Laboratory. The traditional monoethanolamine process for CO2 removal suffers the disadvantages of low carbon dioxide loading capacity, equipment corrosion, amine degradation by SO2 and O2 in flue gas, and high energy penalty during absorbent regeneration. The aqueous ammonia process can simultaneously remove CO2, SO2, NOx, plus HCl and HF that may exist in the flue gas. There could be oxidation of SO2 and NO prior to contacting the aqueous ammonia absorbent. Test results pertaining to the ammonia/carbon dioxide reaction in a semi-continuous reactor system are presented. The parametric effects of sparger design, reaction temperature, and ammonia concentration on gas loadings and absorption rates are discussed. Regeneration test results, including solution-cycling between the regeneration and absorption steps to determine a realistic loading capacity for the ammonia solutions are also presented.

Suggested Citation

  • Kevin P. Resnik & James T. Yeh & Henry W. Pennline, 2004. "Aqua ammonia process for simultaneous removal of CO 2 , SO 2 and NO x," International Journal of Environmental Technology and Management, Inderscience Enterprises Ltd, vol. 4(1/2), pages 89-104.
    • Handle: RePEc:ids:ijetma:v:4:y:2004:i:1/2:p:89-104
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    Cited by:

    1. Martín, C.F. & Sweatman, M.B. & Brandani, S. & Fan, X., 2016. "Wet impregnation of a commercial low cost silica using DETA for a fast post-combustion CO2 capture process," Applied Energy, Elsevier, vol. 183(C), pages 1705-1721.
    2. Muhammad Asif & Muhammad Suleman & Ihtishamul Haq & Syed Asad Jamal, 2018. "Post‐combustion CO2 capture with chemical absorption and hybrid system: current status and challenges," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 8(6), pages 998-1031, December.
    3. Yuta Sakanaka & Shotaro Hiraide & Iori Sugawara & Hajime Uematsu & Shogo Kawaguchi & Minoru T. Miyahara & Satoshi Watanabe, 2023. "Generalised analytical method unravels framework-dependent kinetics of adsorption-induced structural transition in flexible metal–organic frameworks," Nature Communications, Nature, vol. 14(1), pages 1-12, December.

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