The influence of porosity and structural parameters on different kinds of gas hydrate dissociation
Methane hydrate dissociation at negative temperatures was studied experimentally for different artificial and natural samples, differing by macro- and micro-structural parameters. Four characteristic dissociation types are discussed in the paper. The internal kinetics of artificial granule gas hydra...
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ftpubmed:oai:pubmedcentral.nih.gov:4957226 2023-05-15T17:12:00+02:00 The influence of porosity and structural parameters on different kinds of gas hydrate dissociation Misyura, S. Y. 2016-07-22 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4957226/ http://www.ncbi.nlm.nih.gov/pubmed/27445113 https://doi.org/10.1038/srep30324 en eng Nature Publishing Group http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4957226/ http://www.ncbi.nlm.nih.gov/pubmed/27445113 http://dx.doi.org/10.1038/srep30324 Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ CC-BY Article Text 2016 ftpubmed https://doi.org/10.1038/srep30324 2016-07-31T00:10:16Z Methane hydrate dissociation at negative temperatures was studied experimentally for different artificial and natural samples, differing by macro- and micro-structural parameters. Four characteristic dissociation types are discussed in the paper. The internal kinetics of artificial granule gas hydrates and clathrate hydrates in coal is dependent on the porosity, defectiveness and gas filtration rate. The density of pores distribution in the crust of formed ice decreases by the several orders of magnitude and this change significantly the rate of decay. Existing models for describing dissociation at negative temperatures do not take into account the structural parameters of samples. The dissociation is regulated by internal physical processes that must be considered in the simulation. Non-isothermal dissociation with constant external heat flux was simulated numerically. The dissociation is simulated with consideration of heat and mass transfer, kinetics of phase transformation and gas filtering through a porous medium of granules for the negative temperatures. It is shown that the gas hydrate dissociation in the presence of mainly microporous structures is fundamentally different from the disintegration of gas hydrates containing meso and macropores. Text Methane hydrate PubMed Central (PMC) Scientific Reports 6 1 |
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Article Misyura, S. Y. The influence of porosity and structural parameters on different kinds of gas hydrate dissociation |
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Methane hydrate dissociation at negative temperatures was studied experimentally for different artificial and natural samples, differing by macro- and micro-structural parameters. Four characteristic dissociation types are discussed in the paper. The internal kinetics of artificial granule gas hydrates and clathrate hydrates in coal is dependent on the porosity, defectiveness and gas filtration rate. The density of pores distribution in the crust of formed ice decreases by the several orders of magnitude and this change significantly the rate of decay. Existing models for describing dissociation at negative temperatures do not take into account the structural parameters of samples. The dissociation is regulated by internal physical processes that must be considered in the simulation. Non-isothermal dissociation with constant external heat flux was simulated numerically. The dissociation is simulated with consideration of heat and mass transfer, kinetics of phase transformation and gas filtering through a porous medium of granules for the negative temperatures. It is shown that the gas hydrate dissociation in the presence of mainly microporous structures is fundamentally different from the disintegration of gas hydrates containing meso and macropores. |
format |
Text |
author |
Misyura, S. Y. |
author_facet |
Misyura, S. Y. |
author_sort |
Misyura, S. Y. |
title |
The influence of porosity and structural parameters on different kinds of gas hydrate dissociation |
title_short |
The influence of porosity and structural parameters on different kinds of gas hydrate dissociation |
title_full |
The influence of porosity and structural parameters on different kinds of gas hydrate dissociation |
title_fullStr |
The influence of porosity and structural parameters on different kinds of gas hydrate dissociation |
title_full_unstemmed |
The influence of porosity and structural parameters on different kinds of gas hydrate dissociation |
title_sort |
influence of porosity and structural parameters on different kinds of gas hydrate dissociation |
publisher |
Nature Publishing Group |
publishDate |
2016 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4957226/ http://www.ncbi.nlm.nih.gov/pubmed/27445113 https://doi.org/10.1038/srep30324 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4957226/ http://www.ncbi.nlm.nih.gov/pubmed/27445113 http://dx.doi.org/10.1038/srep30324 |
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Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
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CC-BY |
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https://doi.org/10.1038/srep30324 |
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