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A Medium-Scale 50 MW fuel Biomass Gasification Based Bio-SNG Plant: A Developed Gas Cleaning Process

Author

Listed:
  • Ramiar Sadegh-Vaziri

    (KTH Royal Institute of Technology, Department of Chemical Engineering and Technology, SE-100 44 Stockholm, Sweden)

  • Marko Amovic

    (Cortus Energy AB, Skalholtsvägen 2, SE-164 40 Kista, Sweden)

  • Rolf Ljunggren

    (KTH Royal Institute of Technology, Department of Chemical Engineering and Technology, SE-100 44 Stockholm, Sweden)

  • Klas Engvall

    (KTH Royal Institute of Technology, Department of Chemical Engineering and Technology, SE-100 44 Stockholm, Sweden)

Abstract

Natural gas is becoming increasingly important as a primary energy source. A suitable replacement for fossil natural gas is bio-SNG, produced by biomass gasification, followed by methanation. A major challenge is efficient gas cleaning processes for removal of sulfur compounds and other impurities. The present study focuses on development of a gas cleaning step for a product gas produced in a 50 MW fuel gasification system. The developed gas cleaning washing process is basically a modification of the Rectisol process. Several different process configurations were evaluated using Aspen plus, including PC-SAFT for the thermodynamic modeling. The developed configuration takes advantage of only one methanol wash column, compared to two columns in a conventional Rectisol process. Results from modeling show the ability of the proposed configuration to remove impurities to a sufficiently low concentrations - almost zero concentration for H 2 S, CS 2 , HCl, NH 3 and HCN, and approximately 0.01 mg/Nm 3 for COS. These levels are acceptable for further upgrading of the gas in a methanation process. Simultaneously, up to 92% of the original CO 2 is preserved in the final cleaned syngas stream. No process integration or economic consideration was performed within the scope of the present study, but will be investigated in future projects to improve the overall process.

Suggested Citation

  • Ramiar Sadegh-Vaziri & Marko Amovic & Rolf Ljunggren & Klas Engvall, 2015. "A Medium-Scale 50 MW fuel Biomass Gasification Based Bio-SNG Plant: A Developed Gas Cleaning Process," Energies, MDPI, vol. 8(6), pages 1-16, June.
    • Handle: RePEc:gam:jeners:v:8:y:2015:i:6:p:5287-5302:d:50607
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    References listed on IDEAS

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    1. Mohseni, Farzad & Magnusson, Mimmi & Görling, Martin & Alvfors, Per, 2012. "Biogas from renewable electricity – Increasing a climate neutral fuel supply," Applied Energy, Elsevier, vol. 90(1), pages 11-16.
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    1. Babler, Matthaus U. & Phounglamcheik, Aekjuthon & Amovic, Marko & Ljunggren, Rolf & Engvall, Klas, 2017. "Modeling and pilot plant runs of slow biomass pyrolysis in a rotary kiln," Applied Energy, Elsevier, vol. 207(C), pages 123-133.
    2. Theo, Wai Lip & Lim, Jeng Shiun & Hashim, Haslenda & Mustaffa, Azizul Azri & Ho, Wai Shin, 2016. "Review of pre-combustion capture and ionic liquid in carbon capture and storage," Applied Energy, Elsevier, vol. 183(C), pages 1633-1663.
    3. Akbari, Maryam & Oyedun, Adetoyese Olajire & Kumar, Amit, 2018. "Ammonia production from black liquor gasification and co-gasification with pulp and waste sludges: A techno-economic assessment," Energy, Elsevier, vol. 151(C), pages 133-143.
    4. Vera Marcantonio & Michael Müller & Enrico Bocci, 2021. "A Review of Hot Gas Cleaning Techniques for Hydrogen Chloride Removal from Biomass-Derived Syngas," Energies, MDPI, vol. 14(20), pages 1-15, October.

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