Methane hydrate nucleation and growth from the bulk phase: Further insights into their mechanisms
Methane hydrate nucleation and growth from a bulk phase has been investigated using a quiescent high-pressure view cell. Several hydrate formation/dissociation cycles have been performed at two different initial pressures (10 MPa and 19.5 MPa). Every experiment was performed with a maximum of five c...
Published in: | Fuel |
---|---|
Main Authors: | , |
Format: | Text |
Language: | English |
Published: |
Elsevier Sci Ltd
|
Subjects: | |
Online Access: | https://doi.org/10.1016/j.fuel.2013.10.004 https://archimer.ifremer.fr/doc/00159/27007/25260.pdf https://archimer.ifremer.fr/doc/00159/27007/ |
id |
fttriple:oai:gotriple.eu:10670/1.eg0jde |
---|---|
record_format |
openpolar |
spelling |
fttriple:oai:gotriple.eu:10670/1.eg0jde 2023-05-15T17:11:54+02:00 Methane hydrate nucleation and growth from the bulk phase: Further insights into their mechanisms Fandino Torres, Olivia Ruffine, Livio https://doi.org/10.1016/j.fuel.2013.10.004 https://archimer.ifremer.fr/doc/00159/27007/25260.pdf https://archimer.ifremer.fr/doc/00159/27007/ en eng Elsevier Sci Ltd doi:10.1016/j.fuel.2013.10.004 10670/1.eg0jde https://archimer.ifremer.fr/doc/00159/27007/25260.pdf https://archimer.ifremer.fr/doc/00159/27007/ Archimer, archive institutionnelle de l'Ifremer Fuel (0016-2361) (Elsevier Sci Ltd), 2014-01 , Vol. 117 , P. 442-449 envir geo Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ fttriple https://doi.org/10.1016/j.fuel.2013.10.004 2023-01-22T17:02:23Z Methane hydrate nucleation and growth from a bulk phase has been investigated using a quiescent high-pressure view cell. Several hydrate formation/dissociation cycles have been performed at two different initial pressures (10 MPa and 19.5 MPa). Every experiment was performed with a maximum of five consecutive cycles of cooling/heating. For each cycle, the induction time of incipient hydrate formation has been determined. On one hand, results obtained from cycles using fresh water led to the conclusion that the hydrate formation process is rather stochastic, with induction times varying over a large scale. On the other hand, the whole dataset enabled us to investigate on the controversial memory effect of water which may have the ability to fasten the hydrate formation. Moreover, video monitoring has been performed for most of the hydrate formation/dissociation cycles and pictures were taken at different steps of the hydrate formation. The analysis of the results allowed a better understanding of the hydrate nucleation and growth. Two different mechanisms have been observed according to the initial pressure. At initial pressure around 10 MPa, a thick layer of hydrates was created within a couple seconds at the water–gas interface. This layer hinders the gas diffusion and considerably slows down their growth. At 19.5 MPa, the hydrate formation occurs within a larger volume of the bulk phase, and still close to the water–gas interface. The small hydrate crystals are rather dispersed, allowing the diffusion of gas and enhancing the hydrate growth until the formation of a hard layer at the interface of both phases. Text Methane hydrate Unknown Fuel 117 442 449 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
envir geo |
spellingShingle |
envir geo Fandino Torres, Olivia Ruffine, Livio Methane hydrate nucleation and growth from the bulk phase: Further insights into their mechanisms |
topic_facet |
envir geo |
description |
Methane hydrate nucleation and growth from a bulk phase has been investigated using a quiescent high-pressure view cell. Several hydrate formation/dissociation cycles have been performed at two different initial pressures (10 MPa and 19.5 MPa). Every experiment was performed with a maximum of five consecutive cycles of cooling/heating. For each cycle, the induction time of incipient hydrate formation has been determined. On one hand, results obtained from cycles using fresh water led to the conclusion that the hydrate formation process is rather stochastic, with induction times varying over a large scale. On the other hand, the whole dataset enabled us to investigate on the controversial memory effect of water which may have the ability to fasten the hydrate formation. Moreover, video monitoring has been performed for most of the hydrate formation/dissociation cycles and pictures were taken at different steps of the hydrate formation. The analysis of the results allowed a better understanding of the hydrate nucleation and growth. Two different mechanisms have been observed according to the initial pressure. At initial pressure around 10 MPa, a thick layer of hydrates was created within a couple seconds at the water–gas interface. This layer hinders the gas diffusion and considerably slows down their growth. At 19.5 MPa, the hydrate formation occurs within a larger volume of the bulk phase, and still close to the water–gas interface. The small hydrate crystals are rather dispersed, allowing the diffusion of gas and enhancing the hydrate growth until the formation of a hard layer at the interface of both phases. |
format |
Text |
author |
Fandino Torres, Olivia Ruffine, Livio |
author_facet |
Fandino Torres, Olivia Ruffine, Livio |
author_sort |
Fandino Torres, Olivia |
title |
Methane hydrate nucleation and growth from the bulk phase: Further insights into their mechanisms |
title_short |
Methane hydrate nucleation and growth from the bulk phase: Further insights into their mechanisms |
title_full |
Methane hydrate nucleation and growth from the bulk phase: Further insights into their mechanisms |
title_fullStr |
Methane hydrate nucleation and growth from the bulk phase: Further insights into their mechanisms |
title_full_unstemmed |
Methane hydrate nucleation and growth from the bulk phase: Further insights into their mechanisms |
title_sort |
methane hydrate nucleation and growth from the bulk phase: further insights into their mechanisms |
publisher |
Elsevier Sci Ltd |
url |
https://doi.org/10.1016/j.fuel.2013.10.004 https://archimer.ifremer.fr/doc/00159/27007/25260.pdf https://archimer.ifremer.fr/doc/00159/27007/ |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_source |
Archimer, archive institutionnelle de l'Ifremer Fuel (0016-2361) (Elsevier Sci Ltd), 2014-01 , Vol. 117 , P. 442-449 |
op_relation |
doi:10.1016/j.fuel.2013.10.004 10670/1.eg0jde https://archimer.ifremer.fr/doc/00159/27007/25260.pdf https://archimer.ifremer.fr/doc/00159/27007/ |
op_doi |
https://doi.org/10.1016/j.fuel.2013.10.004 |
container_title |
Fuel |
container_volume |
117 |
container_start_page |
442 |
op_container_end_page |
449 |
_version_ |
1766068654957395968 |