期刊
ENERGY
卷 231, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2021.120826
关键词
Hydrate; Carbon dioxide separation; Nickel foam; Hydrogen storage
资金
- Key Program of National Natural Science Foundation of China [51736009]
- National Natural Science Fund of Guangdong Province, China [2019A1515011490, 2019A1515011730]
- Guangdong Special Support ProgramLocal innovation and entrepreneurship team project [2019BT02L278]
- Special Project for Marine Economy Development of Guangdong Province [GDME-2018D0 02, GDME-2020D04 4]
- National Natural Science Foundation of China [51879254]
- Key Research Program of Frontier Sciences, CAS [ZDBSLYSLH041]
- CAS Science and Technology Apparatus Development Program [YZ201619]
- Frontier Sciences Key Research Program of the Chinese Academy of Sciences [QYZDJSSWJSC033]
The study demonstrated that using nickel foam can increase the gas consumption rate and separation efficiency of hydrate-based CO2 separation, while also contributing to the stability of hydrogen in the hydrate phase.
Hydrate-based Carbon dioxide (CO2) separation was widely concerned because of its simple process and low energy consumption. Mechanical stirring could promote gas-liquid-hydrate three-phase contact and hydrate formation but consumed lots of energy. Therefore, it was necessary to develop more efficient technologies. Nickel foam (Ni-F) is an excellent hydrogen (H-2) storage material with properties of porous structure and good thermal conductivity which are helpful to heat and mass transfer. In this work, by comparing the rate of gas consumption and CO2 separation efficiency, the influence of Ni-F on the hydrate-based CO2 separation was systematically studied. The results showed, firstly, both the gas consumption rate and CO2 separation efficiency were increased by using Ni-F instead of mechanical agitation; secondly, it was firstly found the clear peaks corresponding to H-2 in the Raman spectra of the hydrates formed in the presence of Ni-F under the presure >4.00 MPa and 273.85 K, which indicated that the Ni-F is helpful to the stability of H-2 in hydrate. The results were not only significant for the further development of hydate-based CO2 separation process, but also provided a possible research direction for hydate-based H-2 storage. (C) 2021 Elsevier Ltd. All rights reserved.
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