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Empirical regularity of the thermal pressure coefficient for dense fluids / Zhi-Yong Zeng in Industrial & engineering chemistry research, Vol. 49 N° 16 (Août 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 16 (Août 2010) . - pp. 7654–7659 Titre : Empirical regularity of the thermal pressure coefficient for dense fluids Type de document : texte imprimé Auteurs : Zhi-Yong Zeng, Auteur ; Yuan-Yuan Xu, Auteur ; Xiao-Sen Li, Auteur Année de publication : 2010 Article en page(s) : pp. 7654–7659 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Thermal  Pressure Résumé : In this paper, an empirical regularity has been proposed for dense fluids, namely, that the thermal pressure coefficient is a near-parabola function of pressure. The regularity has been tested with experimental data for both associating and nonassociating compounds. The applicable ranges have also been investigated widely. It is found that the regularity holds well from the freezing temperature to critical temperature, and no obvious limits were found for pressure and compound type. Moreover, parameters of the thermal pressure coefficient expression were regressed from experimental data for n-alkanols, and the statistical results show it is an accurate correlation equation. Further, on the basis of the Lennard-Jones (12−6) potential function, the theoretical analysis was given to confirm the existence and uniqueness of the peak point for Lennard-Jones fluids. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100271c [article] Empirical regularity of the thermal pressure coefficient for dense fluids [texte imprimé] / Zhi-Yong Zeng, Auteur ; Yuan-Yuan Xu, Auteur ; Xiao-Sen Li, Auteur . - 2010 . - pp. 7654–7659. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 16 (Août 2010) . - pp. 7654–7659 Mots-clés : Thermal  Pressure Résumé : In this paper, an empirical regularity has been proposed for dense fluids, namely, that the thermal pressure coefficient is a near-parabola function of pressure. The regularity has been tested with experimental data for both associating and nonassociating compounds. The applicable ranges have also been investigated widely. It is found that the regularity holds well from the freezing temperature to critical temperature, and no obvious limits were found for pressure and compound type. Moreover, parameters of the thermal pressure coefficient expression were regressed from experimental data for n-alkanols, and the statistical results show it is an accurate correlation equation. Further, on the basis of the Lennard-Jones (12−6) potential function, the theoretical analysis was given to confirm the existence and uniqueness of the peak point for Lennard-Jones fluids. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100271c

Experimental investigation into the production behavior of methane hydrate in porous sediment with hot brine stimulation / Xiao-Sen Li in Industrial & engineering chemistry research, Vol. 47 N° 23 (Décembre 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 N° 23 (Décembre 2008) . - p. 9696–9702 Titre : Experimental investigation into the production behavior of methane hydrate in porous sediment with hot brine stimulation Type de document : texte imprimé Auteurs : Xiao-Sen Li, Auteur ; Li-Hua Wan, Auteur ; Gang Li, Auteur Année de publication : 2009 Article en page(s) : p. 9696–9702 Note générale : Chemistry engineering Langues : Anglais (eng) Mots-clés : Experimental  investigation  Methane  hydrate  Porous  sediment  Hot  brine  stimulation Résumé : The gas production behavior from methane hydrate in porous sediment by injecting the brine with the salinity of 0−24 wt % and the temperature of −1 to 130 °C was investigated in a one-dimensional experimental apparatus. The results show that the gas production process consists of three periods: the free gas production, the hydrate dissociation, and the general gas reservoir production. The hydrate dissociation accompanies the temperature decrease with the injection of the brine (NaCl solution), and the dissociation duration is shortened with the increase of the salinity. With the injection of hot brine, instantaneous hydrate dissociation rate also increases with the increase of the salinity. However, while the NaCl concentration is beyond a certain value, the rate has no longer continued increasing. Thermal efficiency and energy ratio for the hydrate production can be enhanced by injecting hot brine, and the enhanced effectiveness is quite good with the injection of high salinity at lower temperature. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8009582 [article] Experimental investigation into the production behavior of methane hydrate in porous sediment with hot brine stimulation [texte imprimé] / Xiao-Sen Li, Auteur ; Li-Hua Wan, Auteur ; Gang Li, Auteur . - 2009 . - p. 9696–9702. Chemistry engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 N° 23 (Décembre 2008) . - p. 9696–9702 Mots-clés : Experimental  investigation  Methane  hydrate  Porous  sediment  Hot  brine  stimulation Résumé : The gas production behavior from methane hydrate in porous sediment by injecting the brine with the salinity of 0−24 wt % and the temperature of −1 to 130 °C was investigated in a one-dimensional experimental apparatus. The results show that the gas production process consists of three periods: the free gas production, the hydrate dissociation, and the general gas reservoir production. The hydrate dissociation accompanies the temperature decrease with the injection of the brine (NaCl solution), and the dissociation duration is shortened with the increase of the salinity. With the injection of hot brine, instantaneous hydrate dissociation rate also increases with the increase of the salinity. However, while the NaCl concentration is beyond a certain value, the rate has no longer continued increasing. Thermal efficiency and energy ratio for the hydrate production can be enhanced by injecting hot brine, and the enhanced effectiveness is quite good with the injection of high salinity at lower temperature. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8009582

Experimental investigation of the formation of cyclopentane - methane hydrate in a novel and large - size bubble column reactor / Qiu-Nan Lv in Industrial & engineering chemistry research, Vol. 51 N° 17 (Mai 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 17 (Mai 2012) . - pp. 5967–5975 Titre : Experimental investigation of the formation of cyclopentane - methane hydrate in a novel and large - size bubble column reactor Type de document : texte imprimé Auteurs : Qiu-Nan Lv, Auteur ; Xiao-Sen Li, Auteur ; Chun-Gang Xu, Auteur Année de publication : 2012 Article en page(s) : pp. 5967–5975 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Methane  gas Résumé : The effects of the flow rates of cyclopentane (CP) and methane gas, operating pressure, and experimental temperature on the formation of cyclopentane-methane hydrate were investigated using a novel bubble column reactor. The results indicated that, with either an increase of the operating pressure or a decrease of the experimental temperature, the induction time decreased whereas the cumulative gas consumption and gas conversion ratio increased. In addition, with an increase of the flow rate of methane gas, the induction time decreased, whereas the cumulative gas consumption increased. The gas conversion ratio increased first from 61.5% to 93.1% when the flow rate of methane gas increased from 159 to 234 mL/min and then decreased from 93.1% to 83.2% when the flow rate of methane gas continuously increased from 234 mL/min to 308.9 mL/min. This decrease was attributed to an increase of the discharge rate of methane from the reactor. It was noted the average methane consumption rate could be effectively enhanced with an increase of the flow rate of gas at relatively low pressure and high temperature. The flow rate of CP had a minimal effect on the cumulative gas consumption and gas conversion ratio. However, an increase of the flow rate of CP could reduce the induction time. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie202422c [article] Experimental investigation of the formation of cyclopentane - methane hydrate in a novel and large - size bubble column reactor [texte imprimé] / Qiu-Nan Lv, Auteur ; Xiao-Sen Li, Auteur ; Chun-Gang Xu, Auteur . - 2012 . - pp. 5967–5975. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 17 (Mai 2012) . - pp. 5967–5975 Mots-clés : Methane  gas Résumé : The effects of the flow rates of cyclopentane (CP) and methane gas, operating pressure, and experimental temperature on the formation of cyclopentane-methane hydrate were investigated using a novel bubble column reactor. The results indicated that, with either an increase of the operating pressure or a decrease of the experimental temperature, the induction time decreased whereas the cumulative gas consumption and gas conversion ratio increased. In addition, with an increase of the flow rate of methane gas, the induction time decreased, whereas the cumulative gas consumption increased. The gas conversion ratio increased first from 61.5% to 93.1% when the flow rate of methane gas increased from 159 to 234 mL/min and then decreased from 93.1% to 83.2% when the flow rate of methane gas continuously increased from 234 mL/min to 308.9 mL/min. This decrease was attributed to an increase of the discharge rate of methane from the reactor. It was noted the average methane consumption rate could be effectively enhanced with an increase of the flow rate of gas at relatively low pressure and high temperature. The flow rate of CP had a minimal effect on the cumulative gas consumption and gas conversion ratio. However, an increase of the flow rate of CP could reduce the induction time. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie202422c

Gas hydrate formation process for capture of carbon dioxide from fuel gas mixture / Xiao-Sen Li in Industrial & engineering chemistry research, Vol. 49 N° 22 (Novembre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 22 (Novembre 2010) . - pp. 11614–11619 Titre : Gas hydrate formation process for capture of carbon dioxide from fuel gas mixture Type de document : texte imprimé Auteurs : Xiao-Sen Li, Auteur ; Zhi-Ming Xia, Auteur ; Zhao-Yang Chen, Auteur Année de publication : 2011 Article en page(s) : pp. 11614–11619 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Gas  Carbon  Dioxide Résumé : To determine the suitable operating conditions for the hydrate-based CO2 separation process from a fuel gas mixture, the hydrate nucleation and growth kinetics of the simulated fuel gas (39.2 mol % CO2/H2 gas mixture) in the presence of tetra-n-butyl ammonium bromide (TBAB) are investigated. The experiments were conducted at the TBAB concentration range of 0.14−1.00 mol %, the temperature range of 275.15−282.45 K, the driving force range of 1.00−4.50 MPa, the gas/liquid phase ratio range of 0.86−6.47, and the hydrate growth time of 15−120 min. It is found that the addition of TBAB not only shortens the induction time and accelerates the hydrate growth rate, but also enhances CO2 encaged into the hydrate. However, the number of total moles of gas consumed and the number of moles of CO2 transferred into the hydrate slurry phase decrease with the increase of the TBAB concentration when the TBAB concentration is above 0.29 mol %. The induction time reduces, and the number of moles of gas consumed, the hydrate formation rate, and the number of moles of CO2 encaged into hydrate phase increase with the increase of the driving force. However, when the driving force is more than 2.5 MPa, H2 prefers to go into the hydrate phase with the increase of the driving force, as compared to CO2. In addition, the temperature has little effect on the hydrate formation process. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100851u [article] Gas hydrate formation process for capture of carbon dioxide from fuel gas mixture [texte imprimé] / Xiao-Sen Li, Auteur ; Zhi-Ming Xia, Auteur ; Zhao-Yang Chen, Auteur . - 2011 . - pp. 11614–11619. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 22 (Novembre 2010) . - pp. 11614–11619 Mots-clés : Gas  Carbon  Dioxide Résumé : To determine the suitable operating conditions for the hydrate-based CO2 separation process from a fuel gas mixture, the hydrate nucleation and growth kinetics of the simulated fuel gas (39.2 mol % CO2/H2 gas mixture) in the presence of tetra-n-butyl ammonium bromide (TBAB) are investigated. The experiments were conducted at the TBAB concentration range of 0.14−1.00 mol %, the temperature range of 275.15−282.45 K, the driving force range of 1.00−4.50 MPa, the gas/liquid phase ratio range of 0.86−6.47, and the hydrate growth time of 15−120 min. It is found that the addition of TBAB not only shortens the induction time and accelerates the hydrate growth rate, but also enhances CO2 encaged into the hydrate. However, the number of total moles of gas consumed and the number of moles of CO2 transferred into the hydrate slurry phase decrease with the increase of the TBAB concentration when the TBAB concentration is above 0.29 mol %. The induction time reduces, and the number of moles of gas consumed, the hydrate formation rate, and the number of moles of CO2 encaged into hydrate phase increase with the increase of the driving force. However, when the driving force is more than 2.5 MPa, H2 prefers to go into the hydrate phase with the increase of the driving force, as compared to CO2. In addition, the temperature has little effect on the hydrate formation process. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100851u

Investigation of Interfacial Tensions for Carbon Dioxide Aqueous Solutions by Perturbed-Chain Statistical Associating Fluid Theory Combined with Density-Gradient Theory / Xiao-Sen Li ; Jian-Min Liu ; Dong Fu in Industrial & engineering chemistry research, Vol. 47 n°22 (Novembre 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 n°22 (Novembre 2008) . - p. 8911–8917 Titre : Investigation of Interfacial Tensions for Carbon Dioxide Aqueous Solutions by Perturbed-Chain Statistical Associating Fluid Theory Combined with Density-Gradient Theory Type de document : texte imprimé Auteurs : Xiao-Sen Li, Auteur ; Jian-Min Liu, Auteur ; Dong Fu, Auteur Année de publication : 2008 Article en page(s) : p. 8911–8917 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Carbon  Dioxide  Aqueous  Solutions  Perturbed-Chain Résumé : The perturbed-chain statistical associating fluid theory and density-gradient theory are used to construct an equation of state (EOS) applicable for the phase behaviors of carbon dioxide aqueous solutions. With the molecular parameters and influence parameters respectively regressed from bulk properties and surface tensions of pure fluids as input, both the bulk and interfacial properties of carbon dioxide aqueous solutions are satisfactorily correlated by adjusting the binary interaction parameter (kij). Our results show that the constructed EOS is able to describe the interfacial properties of carbon dioxide aqueous solutions in a wide temperature range, and illustrate the influences of temperature, pressure, and densities in each phase on the interfacial properties. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800959h [article] Investigation of Interfacial Tensions for Carbon Dioxide Aqueous Solutions by Perturbed-Chain Statistical Associating Fluid Theory Combined with Density-Gradient Theory [texte imprimé] / Xiao-Sen Li, Auteur ; Jian-Min Liu, Auteur ; Dong Fu, Auteur . - 2008 . - p. 8911–8917. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 n°22 (Novembre 2008) . - p. 8911–8917 Mots-clés : Carbon  Dioxide  Aqueous  Solutions  Perturbed-Chain Résumé : The perturbed-chain statistical associating fluid theory and density-gradient theory are used to construct an equation of state (EOS) applicable for the phase behaviors of carbon dioxide aqueous solutions. With the molecular parameters and influence parameters respectively regressed from bulk properties and surface tensions of pure fluids as input, both the bulk and interfacial properties of carbon dioxide aqueous solutions are satisfactorily correlated by adjusting the binary interaction parameter (kij). Our results show that the constructed EOS is able to describe the interfacial properties of carbon dioxide aqueous solutions in a wide temperature range, and illustrate the influences of temperature, pressure, and densities in each phase on the interfacial properties. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800959h

Numerical simulation of gas production from natural gas hydrate using a single horizontal well by depressurization in qilian mountain permafrost / Xiao-Sen Li in Industrial & engineering chemistry research, Vol. 51 N° 11 (Mars 2012) 

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Study on dissociation behaviors of methane hydrate in porous media based on experiments and fractional dimension shrinking-core model / Xiao-Sen Li in Industrial & engineering chemistry research, Vol. 50 N° 13 (Juillet 2011) 

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