Experimental and modeling study on controlling factor of methane hydrate formation in silica gels

Yu Zhang, Xiao-Sen Li, Zhao-Yang Chen, Zhi-Ming Xia, Yi Wang and Gang Li

Applied Energy, 2018, vol. 225, issue C, 827-834

Abstract: In order to study the mechanism of methane hydrate formation in porous media, the formation experiments of methane hydrate in porous media at the constant pressure were performed in the temperature range of 274.15–276.15 K and the pressure range of 5–8 MPa. The silica gels with the average pore diameters of 129.5, 179.6, and 332 Å were used as the porous media for the experiments. The experimental results indicate that the final gas consumption increases with the increase of the formation pressure and the decrease of the formation temperature. Based on the shrinking core model, the reaction-controlled kinetic model and the diffusion-controlled kinetic model for hydrate formation in silica gels were built, respectively. The reaction-controlled kinetic model well fits the kinetic data in 129.5 Å and 179.6 Å silica gels, and the diffusion-controlled model well fits the kinetic data in 332 Å silica gels with a relatively high regression coefficient (R2 > 0.99). The formation rate of the methane hydrate is controlled by the gas diffusion process in 129.5 Å and 179.6 Å silica gels, and is controlled by the reaction process in 332 Å silica gels.

Keywords: Methane hydrate; Formation; Silica gels; Pore size; Controlling factor (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0306261918307694
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:225:y:2018:i:c:p:827-834

Ordering information: This journal article can be ordered from
http://www.elsevier.com/wps/find/journaldescription.cws_home/405891/bibliographic
http://www.elsevier. ... 405891/bibliographic

DOI: 10.1016/j.apenergy.2018.05.059

Access Statistics for this article

Applied Energy is currently edited by J. Yan

More articles in Applied Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().