Methane recovery from natural gas hydrate with simulated IGCC syngas
Methane (CH4) recovery from natural gas hydrates (NGHs) by CO2-CH4 replacement is considered as a win-win technology for producing CH4 and sequestrating CO2 synchronously. In this investigation, simulated Integrated Gasification Combined Cycle (IGCC) syngas of CO2/H2 gas mixture is used to replace C...
Main Authors: | , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | unknown |
Subjects: | |
Online Access: | http://www.sciencedirect.com/science/article/pii/S0360544216319430 |
id |
ftrepec:oai:RePEc:eee:energy:v:120:y:2017:i:c:p:192-198 |
---|---|
record_format |
openpolar |
spelling |
ftrepec:oai:RePEc:eee:energy:v:120:y:2017:i:c:p:192-198 2024-04-14T08:14:52+00:00 Methane recovery from natural gas hydrate with simulated IGCC syngas Ding, Ya-Long Xu, Chun-Gang Yu, Yi-Song Li, Xiao-Sen http://www.sciencedirect.com/science/article/pii/S0360544216319430 unknown http://www.sciencedirect.com/science/article/pii/S0360544216319430 article ftrepec 2024-03-19T10:38:19Z Methane (CH4) recovery from natural gas hydrates (NGHs) by CO2-CH4 replacement is considered as a win-win technology for producing CH4 and sequestrating CO2 synchronously. In this investigation, simulated Integrated Gasification Combined Cycle (IGCC) syngas of CO2/H2 gas mixture is used to replace CH4 from simulated methane hydrate which is formed in pure water at 274.15 K and 4.5 MPa. The changes of concentrations of CH4, CO2 and H2 in gas phase during the replacement process are supervised by Gas Chromatograph (GC), and the gas hydrates are determined through in situ Raman. Meanwhile, the CH4 recovery and the replacement mechanism are qualitatively analyzed. The results indicate that, on one hand, the replacement consists of two steps, CH4 hydrate dissociation at the first and followed by CO2 hydrate formation, on the other hand, the CH4 recovery from CH4-CO2/H2 replacement is more than 71% which is significantly higher than that from CH4-CO2 replacement. Notably, no H2 is found in the hydrate phase in the replacement process, which implying that H2 does not compete with CH4 molecules occupying hydrate cages but plays promotion role in CO2-CH4 replacement. CH4 hydrate; Replacement; IGCC syngas; Raman; Article in Journal/Newspaper Methane hydrate RePEc (Research Papers in Economics) |
institution |
Open Polar |
collection |
RePEc (Research Papers in Economics) |
op_collection_id |
ftrepec |
language |
unknown |
description |
Methane (CH4) recovery from natural gas hydrates (NGHs) by CO2-CH4 replacement is considered as a win-win technology for producing CH4 and sequestrating CO2 synchronously. In this investigation, simulated Integrated Gasification Combined Cycle (IGCC) syngas of CO2/H2 gas mixture is used to replace CH4 from simulated methane hydrate which is formed in pure water at 274.15 K and 4.5 MPa. The changes of concentrations of CH4, CO2 and H2 in gas phase during the replacement process are supervised by Gas Chromatograph (GC), and the gas hydrates are determined through in situ Raman. Meanwhile, the CH4 recovery and the replacement mechanism are qualitatively analyzed. The results indicate that, on one hand, the replacement consists of two steps, CH4 hydrate dissociation at the first and followed by CO2 hydrate formation, on the other hand, the CH4 recovery from CH4-CO2/H2 replacement is more than 71% which is significantly higher than that from CH4-CO2 replacement. Notably, no H2 is found in the hydrate phase in the replacement process, which implying that H2 does not compete with CH4 molecules occupying hydrate cages but plays promotion role in CO2-CH4 replacement. CH4 hydrate; Replacement; IGCC syngas; Raman; |
format |
Article in Journal/Newspaper |
author |
Ding, Ya-Long Xu, Chun-Gang Yu, Yi-Song Li, Xiao-Sen |
spellingShingle |
Ding, Ya-Long Xu, Chun-Gang Yu, Yi-Song Li, Xiao-Sen Methane recovery from natural gas hydrate with simulated IGCC syngas |
author_facet |
Ding, Ya-Long Xu, Chun-Gang Yu, Yi-Song Li, Xiao-Sen |
author_sort |
Ding, Ya-Long |
title |
Methane recovery from natural gas hydrate with simulated IGCC syngas |
title_short |
Methane recovery from natural gas hydrate with simulated IGCC syngas |
title_full |
Methane recovery from natural gas hydrate with simulated IGCC syngas |
title_fullStr |
Methane recovery from natural gas hydrate with simulated IGCC syngas |
title_full_unstemmed |
Methane recovery from natural gas hydrate with simulated IGCC syngas |
title_sort |
methane recovery from natural gas hydrate with simulated igcc syngas |
url |
http://www.sciencedirect.com/science/article/pii/S0360544216319430 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
http://www.sciencedirect.com/science/article/pii/S0360544216319430 |
_version_ |
1796313119738298368 |