期刊
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
卷 40, 期 19, 页码 2257-2264出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/15567036.2018.1477879
关键词
Additive amount; aggregation; grain size; hydrate; hydrophobic nano-SiO2; influence mechanism
资金
- National Science and Technology Major Project [2016ZX05020004-002]
Effects of hydrophobic nano-SiO2 with different grain sizes and concentrations on CH4 hydrate formation were studied in this paper. Results showed that although the addition of hydrophobic nano-SiO2 did not change the phase equilibrium condition of CH4 hydrate, hydrate formation was promoted by enhancing the thermal conductivity of nano-fluid and increasing the gas-liquid contact area on the hydrophobic nano-SiO2 surface. When the grain size of hydrophobic nano-SiO2 was 80 nm and the concentration reached 5.0 wt%, there was no induction time for CH4 hydrate formation, and the average rate of CH4 hydrate formation increased 33.1% compared with ultrapure water experiment.
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