An analysis of gas separation processes of HFC-134a from gaseous mixtures with nitrogen—Comparison of two types of gas separation methods, liquefaction and hydrate-based methods, in terms of the equilibrium recovery ratio

Nagata, Toru; Tajima, Hideo; Yamasaki, Akira; Kiyono, Fumio; Abe, Yutaka

doi:10.1016/j.seppur.2008.10.023

Cited by 37 publications

(13 citation statements)

References 10 publications

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“…Similar to the experiments conducted on the flue gas mixture, the presence of THF (1.0 mol%) significantly reduced the gas uptake and the separation efficiency. Finally, other applications such as gas separation of HFC-134a (Nagata et al, 2009) may also be considered.…”

Section: Pre-combustion Capturementioning

confidence: 99%

“…For example, a 4% conversion at the onset of agglomeration has been reported (Englezos, 1996). There is an ongoing effort to improve the performance of these crystallizers that will enable the continuous and efficient hydrate crystallization for CO 2 capture, natural gas storage and transport and other gas separation applications like separation of HFC-134a (Nagata et al, 2009). Mori (2003) reviewed and discussed the various hydrate formation vessels and their limitations.…”

Section: Introductionmentioning

confidence: 99%

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Capture of carbon dioxide from flue or fuel gas mixtures by clathrate crystallization in a silica gel column

Adeyemo

Kumar

Linga

et al. 2010

International Journal of Greenhouse Gas Control

174

113

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Section: Pre-combustion Capturementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Capture of carbon dioxide from flue or fuel gas mixtures by clathrate crystallization in a silica gel column

Adeyemo

Kumar

Linga

et al. 2010

International Journal of Greenhouse Gas Control

174

113

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“…Although it is difficult to measure the concentration of the HFC134a solution directly, we calculated * and indirectly. * can be calculated by determining the theoretical gas recovery rate from the P (pressure)-y (gas composition) equilibrium diagram of the HFC134a-N2 mixed gas hydrate (Nagata et al, 2009). can be considered as the sum of the saturated solubility of HFC134a in water and the concentration of HFC 134a absorbed within hydrate in the slurry.…”

Section: Volumetric Mass Transfer Coefficientmentioning

confidence: 99%

Study on Mass Transfer Characteristics of Hydrate-based Gas Absorber

et al. 2021

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Hydrated-based gas separation is a method capable of selectively separating and recovering greenhouse gases. Although a conventional hydrate-based gas separation apparatus is a batch or a semi-batch system, continuous operation is preferable to increase the throughput of gas without changing the apparatus volume. Recently, we proposed a flow type apparatus to allow continuous operation of hydrate formation (absorption) and subsequent decomposition (desorption). The aim of this study is to investigate the mass transfer characteristics of the continuous apparatus using the HFC134a-N2 mixed gas system. The volumetric mass transfer coefficient was calculated especially during a steady state of gas absorption. Besides, we compared mass transfer performance between the hydrate-based gas absorber and a conventional bubble column. Sodium dodecyl sulfate was used as a hydrate dispersant. In the flow type apparatus, the gas-liquid contact was good and the hydrate slurry state was observed during hydrate formation. In the surfactant solution, the volumetric mass transfer coefficient increased in comparison with that in water. The volumetric mass transfer coefficient with hydrate was higher than that of the bubble column. These results suggest that hydrate formation improves gas absorption performance.

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“…On the other hand, hydrate can be taken into account as a useful phase in many applications (Sarshar et al 2010b). Indeed, it can be used in gas storage (Sun et al 2003b;Khokhar et al 1998;Gudmundsson et al 1994;Ohgaki et al 1996;Sun et al 2003a;Lee et al 2005;Veluswamy and Linga 2013;Aliabadi et al 2015), transmission (Sun et al 2003b), separation technology (Eslamimanesh et al 2012b;Kamata et al 2004;Arjmandi et al 2007;Nagata et al 2009;Shiojiri et al 2004;Tang et al 2013), energy resource (Collett 2002;Kvenvolden 1993;Makogon et al 2007;Collett 2004;Chong et al 2016), CO 2 capturing (Kang and Lee 2000;Zhong et al 2016;Spencer and Currier 2002;Duc et al 2007;Dickens 2003;Babu et al 2016;Zhong et al 2015;Yang et al 2015;Sarshar et al 2009), and solving geohazard problems (Maslin et al 2010;Kvenvolden 1999;Milkov et al 2000;Ruppel et al 2008;Yamamoto et al 2015). As mentioned, the conditions of hydrate formation are difficult (high pressure and low temperature), and in practical applications, the conditions need to be moderated (Eslamimanesh et al 2012a).…”

Section: Effect Of Inhibitors and Promotersmentioning

confidence: 99%

An insight into the role of the association equations of states in gas hydrate modeling: a review

et al. 2020

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Encouraged by the wide spectrum of novel applications of gas hydrates, e.g., energy recovery, gas separation, gas storage, gas transportation, water desalination, and hydrogen hydrate as a green energy resource, as well as CO2 capturing, many scientists have focused their attention on investigating this important phenomenon. Of course, from an engineering viewpoint, the mathematical modeling of gas hydrates is of paramount importance, as anticipation of gas hydrate stability conditions is effective in the design and control of industrial processes. Overall, the thermodynamic modeling of gas hydrate can be tackled as an equilibration of three phases, i.e., liquid, gas, and solid hydrate. The inseparable component in all hydrate systems, water, is highly polar and non-ideal, necessitating the use of more advanced equation of states (EoSs) that take into account more intermolecular forces for thermodynamic modeling of these systems. Motivated by the ever-increasing number of publications on this topic, this study aims to review the application of associating EoSs for the thermodynamic modeling of gas hydrates. Three most important hydrate-based models available in the literature including the van der Waals–Platteeuw (vdW–P) model, Chen–Guo model, and Klauda–Sandler model coupled with CPA and SAFT EoSs were investigated and compared with cubic EoSs. It was concluded that the CPA and SAFT EoSs gave very accurate results for hydrate systems as they take into account the association interactions, which are very crucial in gas hydrate systems in which water, methanol, glycols, and other types of associating compounds are available. Moreover, it was concluded that the CPA EoS is easier to use than the SAFT-type EoSs and our suggestion for the gas hydrate systems is the CPA EoS.

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An analysis of gas separation processes of HFC-134a from gaseous mixtures with nitrogen—Comparison of two types of gas separation methods, liquefaction and hydrate-based methods, in terms of the equilibrium recovery ratio

Cited by 37 publications

References 10 publications

Capture of carbon dioxide from flue or fuel gas mixtures by clathrate crystallization in a silica gel column

Capture of carbon dioxide from flue or fuel gas mixtures by clathrate crystallization in a silica gel column

Study on Mass Transfer Characteristics of Hydrate-based Gas Absorber

An insight into the role of the association equations of states in gas hydrate modeling: a review

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