CHEN Bin, XIN Feng, SONG Xiaofei, et al. Enhancement of methane hydrate formation process in phase change slurry[J]. CIESC Journal, 2016, (8): 3202-3208.
CHEN Bin, XIN Feng, SONG Xiaofei, et al. Enhancement of methane hydrate formation process in phase change slurry[J]. CIESC Journal, 2016, (8): 3202-3208.DOI: 10.11949/j.issn.0438-1157.20160346.
The phase change emulsion(PCE) containing phase change material(PCM) of n-tetradecane was used to directly absorb heat of the hydration by the solid-to-liquid phase change of n-tetradecane. Once n-tetradecane in PCE was solidified in the hydrator
the PCE would convert to slurry. The impacts of different pressures from 5.0 to 6.28 MPa on the yield of methane hydrate and hydration rate in the slurry at the temperature 277.6 K were researched at a semi-batch hydrator. Considering the influence of methane dissolution in n-tetradecane on the hydration process
a PVT apparatus to measure the solubility of methane in liquid n-tetradecane was designed
and a more precise calculation process was established to describe the methane hydration. The results showed that:at low temperature conditions
the solubility of methane in liquid n-tetradecane distributed linearly versus pressure
and the methane hydrate formation process was intensified significantly compared to indirect heat removal hydration.