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Date of Publication:2022-10-06

Journal:化工学报

Affiliation of Author(s):能源与动力学院

Issue:6

Page Number:1362-1366

ISSN No.:0438-1157

Abstract:The salinity of free water affects directly the formation and decomposition of methane hydrate. The phase equilibrium of methane hydrate in porous media under the condition of different compositions and concentrations of anions and cations was studied by using the orthogonal experimental design. The experimental results showed that the equilibrium temperature of methane hydrate under the same pressure conditions would decrease with the presence of ions. The increase of ions concentration would cause the gradual decrease of equilibrium temperature. Analysis of variance demonstrated that only Mg2+had significant influence on the equilibrium point of methane hydrate. The influences of the concentration of three anions on the equilibrium point of methane hydrate were all significant. The induction time of methane hydrate was irregular and was rarely affected by the kind and concentration of ions. © All Rights Reserved.

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