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Performance comparison of aqueous MEA and AMP solutions for biogas upgrading

  • The 11th Korea-China Clean Energy Workshop
  • Published:
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Abstract

Two different aqueous amine solutions were applied to CO2 removal from simulated biogas in a lab.-scale continuous absorption process that can handle 5Nm3/hr of gas treatment. The effects of the gas-to-liquid ratio in the absorber and of the temperature of the reboiler on the CO2 removal were analyzed in aqueous MEA and AMP solutions. Since the CO2 loading ratio of AMP solutions is larger than that of MEA solutions for the same absorbent concentration, the AMP solutions have higher CO2 removal efficiency than that of MEA solutions for the same gas-to-liquid ratio and reboiler temperature. Also, the 30 wt% MEA solution has a higher CO2 removal efficiency than that of the 20 wt% MEA solution at the same gas-to-liquid ratio and reboiler temperature. To evaluate the feasibility of biogas upgrading, a commercial simulator, Aspen Plus®, was used to analyze the effects of absorbent concentration, absorbent flow rate at the absorption column, and absorber height on CO2 removal and CH4 purity; the regeneration energy was also evaluated. The results were applied to the design of a pilot-scale biogas upgrading plant that can handle 10,000Nm3/day of biogas treatment.

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Authors and Affiliations

  1. Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon, 34129, Korea

    Young Cheol Park, Jong-Seop Lee, Jong-Ho Moon & Byoung-Moo Min

  2. Hansol EME, 55 Bundang-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13591, Korea

    Dong-Min Shim & Hyun-Je Sung

Authors
  1. Young Cheol Park
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  2. Jong-Seop Lee
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  3. Jong-Ho Moon
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  4. Byoung-Moo Min
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  5. Dong-Min Shim
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  6. Hyun-Je Sung
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Corresponding author

Correspondence to Byoung-Moo Min.

Additional information

This paper is reported in the 11th China-Korea Clean Energy Workshop.

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Park, Y.C., Lee, JS., Moon, JH. et al. Performance comparison of aqueous MEA and AMP solutions for biogas upgrading. Korean J. Chem. Eng. 34, 921–927 (2017). https://doi.org/10.1007/s11814-016-0346-5

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  • DOI: https://doi.org/10.1007/s11814-016-0346-5

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