Influence of a Combined Low Dosage Gas Hydrate Inhibitor on Methane Hydrate Surface

Abstract:

According to analysis of the gas hydrate cage and structure of the inhibitor and simulation of molecular dynamics, the interaction between GHI1 and hydrates was discussed. The structure analysis indicated the side group of PVP can insert into the open hydrate cage, and force the hydrate growing along the polymer chain, which results in a large space resistance and inhibits gas hydrate agglomerating. The results of MD simulation show GHI1 can damage the surface cage in hydrate lattice; the hydrogen and oxygen in GHI1 can form hydrogen bonds respectively with oxygen and hydrogen in hydrates, which makes the surface molecules of the cages unstable and distorts the cages; Synergist diethylene glycol ether increases strength and range of length of hydrogen bond.

• Periodical: Advanced Materials Research (Volumes 1008-1009)
• Pages: 300-306
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1008-1009.300
• Online since: August 2014
• Authors: Cui Ping Tang, Dong Liang Li, De Qing Liang*
• Keywords: Hydrates, Interaction, Low Dosage Hydrates Inhibitors, Natural Gas

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