PSRK method for gas hydrate equilibria: I. Simple and mixed hydrates
Abstract A thermodynamic model using the predictive Soave‐Redlich‐Kwong (PSRK) group contribution method to calculate the fugacities of all components in the vapor and liquid phases in equilibrium with the coexisting hydrate phase is proposed. Since the PSRK method together with the UNIFAC model tak...
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crwiley:10.1002/aic.10019 2024-04-21T08:06:59+00:00 PSRK method for gas hydrate equilibria: I. Simple and mixed hydrates Yoon, Ji‐Ho Yamamoto, Yoshitaka Komai, Takeshi Kawamura, Taro 2004 http://dx.doi.org/10.1002/aic.10019 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Faic.10019 https://onlinelibrary.wiley.com/doi/full/10.1002/aic.10019 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor AIChE Journal volume 50, issue 1, page 203-214 ISSN 0001-1541 1547-5905 General Chemical Engineering Environmental Engineering Biotechnology journal-article 2004 crwiley https://doi.org/10.1002/aic.10019 2024-03-26T09:20:07Z Abstract A thermodynamic model using the predictive Soave‐Redlich‐Kwong (PSRK) group contribution method to calculate the fugacities of all components in the vapor and liquid phases in equilibrium with the coexisting hydrate phase is proposed. Since the PSRK method together with the UNIFAC model takes the gas–gas interaction in the vapor and liquid phases into account, the phase equilibria of mixed gas hydrates can be successfully reproduced. This approach greatly improves upon the accuracy of the modified Huron‐Vidal second‐order (MHV2) model, especially for three‐guest hydrate systems. Based on experimentally determined X‐ray data, an accurate representation for the molar volume of the structure I (sI) hydrate is provided and used for predicting the equilibrium dissociation of methane hydrate at high pressures. Using this correlation, it is possible to reduce noticeable errors in dissociation predictions of high‐pressure hydrate formers. Complete phase behavior, including a new quadruple point, which is predicted to be 272.6 K and 7.55 MPa, for cyclopropane hydrate, is presented by the proposed model calculation. © 2004 American Institute of Chemical Engineers AIChE J, 50: 203–214, 2004 Article in Journal/Newspaper Methane hydrate Wiley Online Library AIChE Journal 50 1 203 214 |
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General Chemical Engineering Environmental Engineering Biotechnology Yoon, Ji‐Ho Yamamoto, Yoshitaka Komai, Takeshi Kawamura, Taro PSRK method for gas hydrate equilibria: I. Simple and mixed hydrates |
topic_facet |
General Chemical Engineering Environmental Engineering Biotechnology |
description |
Abstract A thermodynamic model using the predictive Soave‐Redlich‐Kwong (PSRK) group contribution method to calculate the fugacities of all components in the vapor and liquid phases in equilibrium with the coexisting hydrate phase is proposed. Since the PSRK method together with the UNIFAC model takes the gas–gas interaction in the vapor and liquid phases into account, the phase equilibria of mixed gas hydrates can be successfully reproduced. This approach greatly improves upon the accuracy of the modified Huron‐Vidal second‐order (MHV2) model, especially for three‐guest hydrate systems. Based on experimentally determined X‐ray data, an accurate representation for the molar volume of the structure I (sI) hydrate is provided and used for predicting the equilibrium dissociation of methane hydrate at high pressures. Using this correlation, it is possible to reduce noticeable errors in dissociation predictions of high‐pressure hydrate formers. Complete phase behavior, including a new quadruple point, which is predicted to be 272.6 K and 7.55 MPa, for cyclopropane hydrate, is presented by the proposed model calculation. © 2004 American Institute of Chemical Engineers AIChE J, 50: 203–214, 2004 |
format |
Article in Journal/Newspaper |
author |
Yoon, Ji‐Ho Yamamoto, Yoshitaka Komai, Takeshi Kawamura, Taro |
author_facet |
Yoon, Ji‐Ho Yamamoto, Yoshitaka Komai, Takeshi Kawamura, Taro |
author_sort |
Yoon, Ji‐Ho |
title |
PSRK method for gas hydrate equilibria: I. Simple and mixed hydrates |
title_short |
PSRK method for gas hydrate equilibria: I. Simple and mixed hydrates |
title_full |
PSRK method for gas hydrate equilibria: I. Simple and mixed hydrates |
title_fullStr |
PSRK method for gas hydrate equilibria: I. Simple and mixed hydrates |
title_full_unstemmed |
PSRK method for gas hydrate equilibria: I. Simple and mixed hydrates |
title_sort |
psrk method for gas hydrate equilibria: i. simple and mixed hydrates |
publisher |
Wiley |
publishDate |
2004 |
url |
http://dx.doi.org/10.1002/aic.10019 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Faic.10019 https://onlinelibrary.wiley.com/doi/full/10.1002/aic.10019 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_source |
AIChE Journal volume 50, issue 1, page 203-214 ISSN 0001-1541 1547-5905 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/aic.10019 |
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AIChE Journal |
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50 |
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1 |
container_start_page |
203 |
op_container_end_page |
214 |
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1796946493143252992 |