Enthalpies of dissociation of clathrate hydrates of carbon dioxide, nitrogen, (carbon dioxide+ nitrogen), and (carbon dioxide + nitrogen+ tetrahydrofuran)

Kang, Seong-Pil; Lee, H.; Ryu, Byungki

doi:10.1006/jcht.2000.0765

Cited by 171 publications

(77 citation statements)

References 10 publications

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“…Ripmeester and Ratcliffe (1998) determined that the hydration number at 268 K is equal to 7.0. The hydration number at 273 K reported by Kang et al (2001) is 7.23. However, the hydration number at 276 K and 38 bar measured by Udachin et al (2001) is 6.20 Ϯ 0.15.…”

mentioning

confidence: 95%

Prediction of CH4 and CO2 hydrate phase equilibrium and cage occupancy from ab initio intermolecular potentials

Sun

Duan

2005

Geochimica et Cosmochimica Acta

175

122

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mentioning

confidence: 95%

Prediction of CH4 and CO2 hydrate phase equilibrium and cage occupancy from ab initio intermolecular potentials

Sun

Duan

2005

Geochimica et Cosmochimica Acta

175

122

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“…The hydration number of 5.71 (Kang et al, 2001b) was used for the CO 2 /N 2 gas mixture and 10.05 (Kumar et al, 2009a) was used for the CO 2 /H 2 /C 3 H 8 /H 2 O gas mixture. Table 1 summarizes the relevant experimental conditions, the induction time for crystallization, the moles of gas consumed and the water conversion to hydrate.…”

Section: Conversion Of Water To Hydratementioning

confidence: 99%

A new apparatus to enhance the rate of gas hydrate formation: Application to capture of carbon dioxide

Linga

Kumar

Lee

et al. 2010

International Journal of Greenhouse Gas Control

262

132

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A new apparatus to enhance the rate of gas hydrate formation: Application to capture of carbon dioxide. Linga, Praveen; Kumar, Rajnish; Lee, Ju Dong; Ripmeester, John; Englezos, Peter IntroductionClathrate hydrate crystallization has been regarded as a potential unit operation for seawater desalination, gas fractionation, gas storage and other applications (Chatti et al., 2005;Davidson, 1973;Englezos, 1993;Makogon, 1981). During the past 15 years the emphasis has been on natural gas storage and transportation (Gudmundsson et al., 2000;Matsuda et al., 2006;Thomas and Dawe, 2003) and on carbon dioxide capture from flue and fuel gases (Aaron and Tsouris, 2005;Kang and Lee, 2000;Klara and Srivastava, 2002;Linga et al., 2007a;Seo et al., 2005). Hydrate formation is also a factor when considering injection of CO 2 into the ocean (Lee et al., 2003;Tsouris et al., 2004Tsouris et al., , 2007. If hydrate is to be formed from liquid water then the efficient contacting of the gas with water plays a key role in the above applications. This is because agglomeration of the hydrate crystals creates a barrier to increased conversion in stirred tank reactors (Englezos, 1996). A schematic illustrating how agglomeration of floating crystals creates a barrier to efficient gas/water contacting which in turn limits the conversion in a stirred tank reactor is provided by Linga (2009). Therefore, the search for efficient gas hydrate formation vessels or reactors is ongoing.Although there are several configurations and patents available in the literature for production of gas hydrates, the choice of the best multi phase reactor is still unknown (Heinemann et al., 2001;Iwasaki et al., 2002;Mori, 2003;Waycuilis and York, 2002;Yamasaki et al., 2003). Mori (2003) reviewed the subject and concluded that there is a need to focus on developing hydrate reactors with much improved hydrate forming efficiencies. One of the new approaches underway to enhance the kinetics of hydrate formation is to employ a fixed bed column with silica gel as a medium to capture CO 2 from flue and fuel gases via hydrate crystallization (Adeyemo et al., in press;Seo et al., 2005) or to employ a slurry bubble column (fluidized bed) arrangement to enhance the rate of hydrate formation (Hashemi, 2009) or use a non-stirred batch reactor with cyclopentane as a promoter (Zhang and Lee, 2009).A small size (volume = 323 cm 3 ) stirred vessel was used in our laboratory to demonstrate how hydrate crystallization can be employed to capture CO 2 from flue and fuel gases (Kumar et al., 2009c;Linga et al., 2007a Linga et al., ,b, 2008. It has also been used to assess the storage potential of natural gas in structure H hydrate systems . The kinetics of gas hydrate formation in this vessel is influenced by mass transfer in a short period of time due to agglomeration of hydrates at gas/liquid interface (Linga, 2009). The need for the enhancement of the rate of gas hydrate formation is more acute when additives are used. For the CO 2 capture applications additives such as tetrahydro...

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“…According to literature, small amounts of THF can change the structure I of mixed (CO 2 þ N 2 )-hydrate [7] to structure II [8]. In this paper, we considered the same phenomenon would make the mixture of CO 2 and THF form structure II hydrates.…”

Section: Co 2 Ethf Hydrate Structurementioning

confidence: 83%

Solid fraction modelling for CO2 and CO2–THF hydrate slurries used as secondary refrigerants

Marinhas¹,

Delahaye²,

Fournaison³

2007

International Journal of Refrigeration

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Enthalpies of dissociation of clathrate hydrates of carbon dioxide, nitrogen, (carbon dioxide+ nitrogen), and (carbon dioxide + nitrogen+ tetrahydrofuran)

Cited by 171 publications

References 10 publications

Prediction of CH4 and CO2 hydrate phase equilibrium and cage occupancy from ab initio intermolecular potentials

Prediction of CH4 and CO2 hydrate phase equilibrium and cage occupancy from ab initio intermolecular potentials

A new apparatus to enhance the rate of gas hydrate formation: Application to capture of carbon dioxide

Solid fraction modelling for CO2 and CO2–THF hydrate slurries used as secondary refrigerants

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