Comprehensive study on the dynamic action mechanism of methanol inhibiting hydrate formation and decomposition in simulated seawater DOI
Pan Ma, Shanshan Fu, Yong Cheng

et al.

Journal of Dispersion Science and Technology, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 11

Published: Dec. 13, 2024

Natural gas hydrate is one of the main clean energy sources. It has abundant reserves and high exploitation value in world. At present, injection inhibitor decomposition method most effective extraction method. In order to further clarify mechanism thermodynamic inhibitors for methanol, this paper combines experimental molecular simulation methods study dynamic influence methanol on formation simulated seawater. The specific how salt ions alcohol molecules affect growth analyzed, an explanation given accordingly. results show that: ① Methanol at a concentration 1 wt% promoting effect 9.91% methane hydrates. lower concentrations 3 5 wt%, shows weak inhibitory 10 hydrates completely inhibited. ② From perspective kinetics analysis, no hydrate, but can effectively inhibit secondary hydrate. ③ seawater have hydration salt-expulsion effects, which continuously reduce solubility methane, leading extended period inhibiting ④ that when step size lasts 30 ns, exhibits different existential states fresh water. former obvious gas-liquid stratification, latter appears form nanobubbles, increase will prolong time nanobubbles. ⑤ According from dynamics, enter crystal cavity hydroxyl groups disturb hydrogen bond network resulting inability cage structure close, inhibits above research are helpful field personnel deepen understanding inhibitors.

Language: Английский

Comprehensive study on the dynamic action mechanism of methanol inhibiting hydrate formation and decomposition in simulated seawater DOI
Pan Ma, Shanshan Fu, Yong Cheng

et al.

Journal of Dispersion Science and Technology, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 11

Published: Dec. 13, 2024

Natural gas hydrate is one of the main clean energy sources. It has abundant reserves and high exploitation value in world. At present, injection inhibitor decomposition method most effective extraction method. In order to further clarify mechanism thermodynamic inhibitors for methanol, this paper combines experimental molecular simulation methods study dynamic influence methanol on formation simulated seawater. The specific how salt ions alcohol molecules affect growth analyzed, an explanation given accordingly. results show that: ① Methanol at a concentration 1 wt% promoting effect 9.91% methane hydrates. lower concentrations 3 5 wt%, shows weak inhibitory 10 hydrates completely inhibited. ② From perspective kinetics analysis, no hydrate, but can effectively inhibit secondary hydrate. ③ seawater have hydration salt-expulsion effects, which continuously reduce solubility methane, leading extended period inhibiting ④ that when step size lasts 30 ns, exhibits different existential states fresh water. former obvious gas-liquid stratification, latter appears form nanobubbles, increase will prolong time nanobubbles. ⑤ According from dynamics, enter crystal cavity hydroxyl groups disturb hydrogen bond network resulting inability cage structure close, inhibits above research are helpful field personnel deepen understanding inhibitors.

Language: Английский

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