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Methanol absorption characteristics for the removal of H2S (hydrogen sulfide), COS (carbonyl sulfide) and CO2 (carbon dioxide) in a pilot-scale biomass-to-liquid process

Author

Listed:
  • Seo, Myung Won
  • Yun, Young Min
  • Cho, Won Chul
  • Ra, Ho Won
  • Yoon, Sang Jun
  • Lee, Jae Goo
  • Kim, Yong Ku
  • Kim, Jae Ho
  • Lee, See Hoon
  • Eom, Won Hyun
  • Lee, Uen Do
  • Lee, Sang Bong

Abstract

The BTL (biomass-to-liquid) process is an attractive process that produces liquid biofuels from biomass. The FT (Fisher–Tropsch) process is used to produce synfuels such as diesel and gasoline from gasified biomass. However, the H2S (hydrogen sulfide), COS (carbonyl sulfide) and CO2 (carbon dioxide) in the syngas that are produced from the biomass gasifiers cause a decrease of the conversion efficiency and deactivates the catalyst that is used in the FT process. To remove the acid gases, a pilot-scale methanol absorption tower producing diesel at a rate of 1 BPD (barrel per day) was developed, and the removal characteristics of the acid gases were determined. A total operation time of 500 h was achieved after several campaigns. The average syngas flow rate at the inlet of methanol absorption tower ranged from 300 to 800 L/min. The methanol absorption tower efficiently removed H2S from 30 ppmV to less than 1 ppmV and COS from 2 ppmV to less than 1 ppmV with a removal of CO2 from 20% to 5%. The outlet gas composition adhered to the guidelines for FT reactors. No remaining sulfurous components were found, and the tar component was analyzed in the spent methanol after long-term operations.

Suggested Citation

  • Seo, Myung Won & Yun, Young Min & Cho, Won Chul & Ra, Ho Won & Yoon, Sang Jun & Lee, Jae Goo & Kim, Yong Ku & Kim, Jae Ho & Lee, See Hoon & Eom, Won Hyun & Lee, Uen Do & Lee, Sang Bong, 2014. "Methanol absorption characteristics for the removal of H2S (hydrogen sulfide), COS (carbonyl sulfide) and CO2 (carbon dioxide) in a pilot-scale biomass-to-liquid process," Energy, Elsevier, vol. 66(C), pages 56-62.
  • Handle: RePEc:eee:energy:v:66:y:2014:i:c:p:56-62
    DOI: 10.1016/j.energy.2013.08.038
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    References listed on IDEAS

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    1. Olajire, Abass A., 2010. "CO2 capture and separation technologies for end-of-pipe applications – A review," Energy, Elsevier, vol. 35(6), pages 2610-2628.
    2. Li, Chunshan & Suzuki, Kenzi, 2009. "Tar property, analysis, reforming mechanism and model for biomass gasification--An overview," Renewable and Sustainable Energy Reviews, Elsevier, vol. 13(3), pages 594-604, April.
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    Cited by:

    1. Kim, Young-Doo & Yang, Chang-Won & Kim, Beom-Jong & Moon, Ji-Hong & Jeong, Jae-Yong & Jeong, Soo-Hwa & Lee, See-Hoon & Kim, Jae-Ho & Seo, Myung-Won & Lee, Sang-Bong & Kim, Jae-Kon & Lee, Uen-Do, 2016. "Fischer–tropsch diesel production and evaluation as alternative automotive fuel in pilot-scale integrated biomass-to-liquid process," Applied Energy, Elsevier, vol. 180(C), pages 301-312.
    2. Li, Shenghui & Sun, Xiaojing & Liu, Linlin & Du, Jian, 2023. "A full process optimization of methanol production integrated with co-generation based on the co-gasification of biomass and coal," Energy, Elsevier, vol. 267(C).
    3. Yang, Sheng & Zhang, Lu & Xie, Nan & Gu, Zhaohui & Liu, Zhiqiang, 2021. "Thermodynamic analysis of a semi-lean solution process for energy saving via rectisol wash technology," Energy, Elsevier, vol. 226(C).
    4. Ben Hnich, Khaoula & Khila, Zouhour & Hajjaji, Noureddine, 2020. "Comprehensive study of three configurations coproducing synthetic fuels and electricity from palm residue via Fischer-Tropsch process," Energy, Elsevier, vol. 205(C).
    5. Wafiq, A. & Hanafy, M., 2015. "Feasibility assessment of diesel fuel production in Egypt using coal and biomass: Integrated novel methodology," Energy, Elsevier, vol. 85(C), pages 522-533.
    6. Zhao, Yi & Zhang, Zili & Wang, Hao & Qian, Xinfeng, 2016. "Absorption of carbon dioxide by hydrogen donor under atmospheric pressure," Renewable and Sustainable Energy Reviews, Elsevier, vol. 64(C), pages 84-90.

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