Experimental Investigation on Phase Equilibria and Kinetics of Methane Hydrate Formation in Maojian Tea Extracts

Hang Zhou ； Qiming Geng ； Weilong Zhao ； Jun Song ； Ruirui Wang

《International Core Journal of Engineering》 8卷3期 (2022/03) Pp. 493-506

https://doi.org/10.6919/ICJE.202203_8(3).0063

摘要

The effects of Xinyang Maojian tea extracts on the methane hydrate formation of phase equilibria and kinetics were investigated in this work. Tea extracts at three different concentrations (0.0625wt%, 0.25wt% and 0.625wt%) and two different solution stand time (0 h and 24 h) were performed respectively. The results showed that 0.0625wt% tea extracts have no obvious effect on kinetics of methane hydrate formation; 0.25wt% and 0.625wt% tea extracts increased the gas consumption and hydrate formation rates significantly. The tea extracts have lager gas consumption than the tea extracts standing still for 0h in same concentrations. However, we also found that tea extracts are also thermodynamic promoters and could mitigate the phase equilibrium condition of methane hydrate. This work provides an environmentally friendly and low-cost synthetic hydrate solution, which might promote the development and industrial application of hydrate technology.

關鍵字

Tea Extracts ； Methane Hydrate ； Phase Equilibria ； Kinetics

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