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Screening of Low-Dosage Methanol as a Hydrate Promoter

Author

Listed:
  • Jyoti Shanker Pandey

    (Center for Energy Resource Engineering (CERE), Department of Chemical Engineering, Technical University of Denmark, 2800 Kongens Lyngby, Denmark)

  • Saad Khan

    (Center for Energy Resource Engineering (CERE), Department of Chemical Engineering, Technical University of Denmark, 2800 Kongens Lyngby, Denmark)

  • Nicolas von Solms

    (Center for Energy Resource Engineering (CERE), Department of Chemical Engineering, Technical University of Denmark, 2800 Kongens Lyngby, Denmark)

Abstract

We report a quantitative study of the effect of low-concentration methanol (MeOH) on the formation and dissociation of hydrates based on CH 4 and CO 2 /N 2 guest molecules. The kinetic promotion and dissociation ability of MeOH is also compared with the anionic surfactant sodium dodecyl sulfate (SDS, 100 ppm, 50 ppm). The effects of concentration changes (1 wt% and 5 wt%), pressure ( p = 80–120 bar), guest molecules (CH 4 and CO 2 ), and temperature (1 °C and below 0 °C) are investigated using slow constant ramp (SCR) and isothermal (IT) temperature schemes. The results show that the kinetics are affected by the guest molecule and MeOH concentration. For CH 4 gas, 5 wt% MeOH shows better promotion, while for CO 2 /N 2 gas mixtures, 1 wt% MeOH gives better promotion. This conclusion agrees well with our previous results demonstrating optimal CH 4 recovery and CO 2 storage in the presence of 5 wt% MeOH. The promoting and inhibiting properties of MeOH could be beneficial in CH 4 production from gas hydrate using CO 2 -rich gas injection, as delayed hydrate film formation in the presence of MeOH could improve both CH 4 recovery and CO 2 storage.

Suggested Citation

  • Jyoti Shanker Pandey & Saad Khan & Nicolas von Solms, 2022. "Screening of Low-Dosage Methanol as a Hydrate Promoter," Energies, MDPI, vol. 15(18), pages 1-20, September.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:18:p:6814-:d:917967
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    References listed on IDEAS

    as
    1. Jyoti Shanker Pandey & Charilaos Karantonidis & Adam Paul Karcz & Nicolas von Solms, 2020. "Enhanced CH 4 -CO 2 Hydrate Swapping in the Presence of Low Dosage Methanol," Energies, MDPI, vol. 13(20), pages 1-30, October.
    2. M Fahed Qureshi & Majeda Khraisheh & Fares Almomani, 2020. "Doping amino acids with classical gas hydrate inhibitors to facilitate the hydrate inhibition effect at low dosages," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 10(4), pages 783-794, August.
    3. Chong, Zheng Rong & Yang, She Hern Bryan & Babu, Ponnivalavan & Linga, Praveen & Li, Xiao-Sen, 2016. "Review of natural gas hydrates as an energy resource: Prospects and challenges," Applied Energy, Elsevier, vol. 162(C), pages 1633-1652.
    4. Veluswamy, Hari Prakash & Kumar, Asheesh & Seo, Yutaek & Lee, Ju Dong & Linga, Praveen, 2018. "A review of solidified natural gas (SNG) technology for gas storage via clathrate hydrates," Applied Energy, Elsevier, vol. 216(C), pages 262-285.
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