Methane Hydrate Formation and Dissociation in Sand Media: Effect of Water Saturation, Gas Flowrate and Particle Size
Assessing the influence of key parameters governing the formation of hydrates and determining the capacity of the latter to store gaseous molecules is needed to improve our understanding of the role of natural gas hydrates in the oceanic methane cycle. Such knowledge will also support the developmen...
Published in: | Energies |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
MDPI AG
2020
|
Subjects: | |
Online Access: | https://doi.org/10.3390/en13195200 https://doaj.org/article/367ccea9509c4ad79ab3100d77daaeb2 |
id |
ftdoajarticles:oai:doaj.org/article:367ccea9509c4ad79ab3100d77daaeb2 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:367ccea9509c4ad79ab3100d77daaeb2 2023-05-15T17:11:58+02:00 Methane Hydrate Formation and Dissociation in Sand Media: Effect of Water Saturation, Gas Flowrate and Particle Size Fatima Doria Benmesbah Livio Ruffine Pascal Clain Véronique Osswald Olivia Fandino Laurence Fournaison Anthony Delahaye 2020-10-01T00:00:00Z https://doi.org/10.3390/en13195200 https://doaj.org/article/367ccea9509c4ad79ab3100d77daaeb2 EN eng MDPI AG https://www.mdpi.com/1996-1073/13/19/5200 https://doaj.org/toc/1996-1073 doi:10.3390/en13195200 1996-1073 https://doaj.org/article/367ccea9509c4ad79ab3100d77daaeb2 Energies, Vol 13, Iss 5200, p 5200 (2020) gas hydrate porous media kinetics methane storage estimate water saturation gas flowrate Technology T article 2020 ftdoajarticles https://doi.org/10.3390/en13195200 2022-12-30T20:42:30Z Assessing the influence of key parameters governing the formation of hydrates and determining the capacity of the latter to store gaseous molecules is needed to improve our understanding of the role of natural gas hydrates in the oceanic methane cycle. Such knowledge will also support the development of new industrial processes and technologies such as those related to thermal energy storage. In this study, high-pressure laboratory methane hydrate formation and dissociation experiments were carried out in a sandy matrix at a temperature around 276.65 K. Methane was continuously injected at constant flowrate to allow hydrate formation over the course of the injection step. The influence of water saturation, methane injection flowrate and particle size on hydrate formation kinetics and methane storage capacity were investigated. Six water saturations (10.8%, 21.6%, 33%, 43.9%, 55% and 66.3%), three gas flowrates (29, 58 and 78 mLn min ‑1 ) and three classes of particle size (80–140, 315–450 and 80–450 µm) were tested, and the resulting data were tabulated. Overall, the measured induction time obtained at 53–57% water saturation has an average value of 58 ± 14 min minutes with clear discrepancies that express the stochastic nature of hydrate nucleation, and/or results from the heterogeneity in the porosity and permeability fields of the sandy core due to heterogeneous particles. Besides, the results emphasize a clear link between the gas injection flowrate and the induction time whatever the particle size and water saturation. An increase in the gas flowrate from 29 to 78 mLn min –1 is accompanied by a decrease in the induction time up to ~100 min (i.e., ~77% decrease). However, such clear behaviour is less conspicuous when varying either the particle size or the water saturation. Likewise, the volume of hydrate-bound methane increases with increasing water saturation. This study showed that water is not totally converted into hydrates and most of the calculated conversion ratios are around 74–84%, with the lowest ... Article in Journal/Newspaper Methane hydrate Directory of Open Access Journals: DOAJ Articles Energies 13 19 5200 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
gas hydrate porous media kinetics methane storage estimate water saturation gas flowrate Technology T |
spellingShingle |
gas hydrate porous media kinetics methane storage estimate water saturation gas flowrate Technology T Fatima Doria Benmesbah Livio Ruffine Pascal Clain Véronique Osswald Olivia Fandino Laurence Fournaison Anthony Delahaye Methane Hydrate Formation and Dissociation in Sand Media: Effect of Water Saturation, Gas Flowrate and Particle Size |
topic_facet |
gas hydrate porous media kinetics methane storage estimate water saturation gas flowrate Technology T |
description |
Assessing the influence of key parameters governing the formation of hydrates and determining the capacity of the latter to store gaseous molecules is needed to improve our understanding of the role of natural gas hydrates in the oceanic methane cycle. Such knowledge will also support the development of new industrial processes and technologies such as those related to thermal energy storage. In this study, high-pressure laboratory methane hydrate formation and dissociation experiments were carried out in a sandy matrix at a temperature around 276.65 K. Methane was continuously injected at constant flowrate to allow hydrate formation over the course of the injection step. The influence of water saturation, methane injection flowrate and particle size on hydrate formation kinetics and methane storage capacity were investigated. Six water saturations (10.8%, 21.6%, 33%, 43.9%, 55% and 66.3%), three gas flowrates (29, 58 and 78 mLn min ‑1 ) and three classes of particle size (80–140, 315–450 and 80–450 µm) were tested, and the resulting data were tabulated. Overall, the measured induction time obtained at 53–57% water saturation has an average value of 58 ± 14 min minutes with clear discrepancies that express the stochastic nature of hydrate nucleation, and/or results from the heterogeneity in the porosity and permeability fields of the sandy core due to heterogeneous particles. Besides, the results emphasize a clear link between the gas injection flowrate and the induction time whatever the particle size and water saturation. An increase in the gas flowrate from 29 to 78 mLn min –1 is accompanied by a decrease in the induction time up to ~100 min (i.e., ~77% decrease). However, such clear behaviour is less conspicuous when varying either the particle size or the water saturation. Likewise, the volume of hydrate-bound methane increases with increasing water saturation. This study showed that water is not totally converted into hydrates and most of the calculated conversion ratios are around 74–84%, with the lowest ... |
format |
Article in Journal/Newspaper |
author |
Fatima Doria Benmesbah Livio Ruffine Pascal Clain Véronique Osswald Olivia Fandino Laurence Fournaison Anthony Delahaye |
author_facet |
Fatima Doria Benmesbah Livio Ruffine Pascal Clain Véronique Osswald Olivia Fandino Laurence Fournaison Anthony Delahaye |
author_sort |
Fatima Doria Benmesbah |
title |
Methane Hydrate Formation and Dissociation in Sand Media: Effect of Water Saturation, Gas Flowrate and Particle Size |
title_short |
Methane Hydrate Formation and Dissociation in Sand Media: Effect of Water Saturation, Gas Flowrate and Particle Size |
title_full |
Methane Hydrate Formation and Dissociation in Sand Media: Effect of Water Saturation, Gas Flowrate and Particle Size |
title_fullStr |
Methane Hydrate Formation and Dissociation in Sand Media: Effect of Water Saturation, Gas Flowrate and Particle Size |
title_full_unstemmed |
Methane Hydrate Formation and Dissociation in Sand Media: Effect of Water Saturation, Gas Flowrate and Particle Size |
title_sort |
methane hydrate formation and dissociation in sand media: effect of water saturation, gas flowrate and particle size |
publisher |
MDPI AG |
publishDate |
2020 |
url |
https://doi.org/10.3390/en13195200 https://doaj.org/article/367ccea9509c4ad79ab3100d77daaeb2 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_source |
Energies, Vol 13, Iss 5200, p 5200 (2020) |
op_relation |
https://www.mdpi.com/1996-1073/13/19/5200 https://doaj.org/toc/1996-1073 doi:10.3390/en13195200 1996-1073 https://doaj.org/article/367ccea9509c4ad79ab3100d77daaeb2 |
op_doi |
https://doi.org/10.3390/en13195200 |
container_title |
Energies |
container_volume |
13 |
container_issue |
19 |
container_start_page |
5200 |
_version_ |
1766068732866592768 |