Gas hydrate formation process for pre-combustion capture of carbon dioxide

Lee, Hyun Ju; Lee, Ju Dong; Linga, Praveen; Englezos, Peter; Kim, Young Seok; Lee, Man Sig; Kim, Jae Won

doi:10.1016/j.energy.2009.05.026

Cited by 245 publications

(167 citation statements)

References 22 publications

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“…This significant decrease can be attributed to the presence of THF in some of the large cages A. Adeyemo et al / International Journal of Greenhouse Gas Control xxx (2009) Lee et al (2009) reported a similar hydrate composition for experiments conducted on a fuel gas mixture in the presence of 1.0 mol% THF employing a semi-batch stirred tank reactor. For the experiment conducted without THF the hydrate phase concentration was 92% whereas the residual gas phase concentration was 21.39% CO 2 .…”

Section: Pre-combustion Capturementioning

confidence: 88%

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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

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174

113

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Section: Pre-combustion Capturementioning

confidence: 88%

“…9. Recently, kinetic experiments on a semi-batch stirred tank reactor for the fuel gas mixture in the presence of THF as an additive concluded that 1.0 mol% is the optimal amount (Lee et al, 2009) similar to the case of flue gas separation . Hence, 1.0 mol% THF aqueous solutions were used in the experiments with the silica gel.…”

Section: Pre-combustion Capturementioning

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

Self Cite

174

113

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“…However, the industrial application of the technology still faces the problems of low hydrate formation rate, relatively high operating pressure and hydrate blockage in separating equipment. Previous studies have shown that the addition of tetrahydrofuran [6], propane [7], cyclopentane [8] and other thermodynamic promoters can greatly moderate the hydrate formation conditions and accelerate the hydrate formation. However, these promoters are faced with the problem of volatilizing in the practical application.…”

Section: Introductionmentioning

confidence: 99%

Anti-Agglomerator of Tetra-n-Butyl Ammonium Bromide Hydrate and Its Effect on Hydrate-Based CO2 Capture

Chen

et al. 2018

Energies

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Tetra-n-butyl ammonium bromide (TBAB) was widely used in the research fields of cold storage and CO 2 hydrate separation due to its high phase change latent heat and thermodynamic promotion for hydrate formation. Agglomeration always occurred in the process of TBAB hydrate generation, which led to the blockage in the pipeline and the separation apparatus. In this work, we screened out a kind of anti-agglomerant that can effectively solve the problem of TBAB hydrate agglomeration. The anti-agglomerant (AA) is composed of 90% cocamidopropyl dimethylamine and 10% glycerol, which can keep TBAB hydrate of 19.3-29.0 wt. % in a stable state of slurry over 72 h. The microscopic observation of the morphology of the TBAB hydrate particles showed that the addition of AA can greatly reduce the size of the TBAB hydrate particles. CO 2 gas separation experiments found that the addition of AA led to great improvement on gas storage capacity, CO 2 split fraction and separation factor, due to the increasing of contact area between gas phase and hydrate particles. The CO 2 split fraction and separation factor with AA addition reached up to 70.3% and 42.8%, respectively.

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“…Thermodynamically the experimental measurements showed that the addition of THF extended CO 2 hydrate stability region by elevating the hydrate equilibrium temperature at a specified pressure (Sabil et al, 2010b). Lee et al (2010) obtained the thermodynamic and kinetic data for the separation/recovery of CO 2 (pre-combustion capture) from a fuel gas (CO 2 -H 2 ) mixture in the presence of THF. Arjmandi et al (2007) studied experimentally the equilibrium of CO 2 and other gases in TBAB semi clathrate hydrate.…”

Section: Additives Used In Co 2 Hydrate Studiesmentioning

confidence: 99%

“…The additives tetrahydrofuran (THF) (Kang et al, 2001b;Lee et al, 2010;Sabil et al, 2010a) , tetra-n-butyl ammonium bromide (TBAB) (Arjmandi et al, 2007;Li et al, 2009aLi et al, , 2010aLi et al, , 2009bLi et al, , 2010b, cyclopentane (CP) (Zhang and Lee, 2009) or silica (Bai et al, 2012) have been tested and used commonly as promoters for CO 2 hydrate formation. Collectively these studies reveal that hydrate nucleation process and onset growth are enhanced by these promoters (Sabil et al, 2010a).…”

Section: Introductionmentioning

confidence: 99%

Kinetics of the formation of CO2 hydrates in the presence of sodium halides and hydrophobic fumed silica nanoparticles

Farhang¹

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CO 2 capture by trapping the greenhouse gas in clathrates hydrates is proving to be one of the promising options for long term carbon storage. This technology is desirable as it can be deposited in the deep ocean where the suitable pressure and temperature is ready without any extra cost. To date, this method has mostly been of academic interest because the formation of gas hydrates is very slow and requires lots of energy and resources. It is important therefore to develop an efficient and economical process to be able to apply this method at an industrial scale. Scientists and researchers have been looking for suitable additives to accelerate the formation of CO 2 hydrate. To meet these objectives numerous additives have previously been tested and several were found to be suitable hydrate promoters. The mechanism for the formation of gas hydrates in the presence of additives is not clear yet. Understanding this mechanism would help us to select and synthesise the most suitable and cost effective additive.In this thesis, two groups of chemicals i.e. salt and hydrophobic particles were added to the hydrate formation reactor and examined. Initially sodium halides were tested for their effect on the kinetics of the formation of CO 2 hydrates in an isochoric system. The effect of different anion types and concentrations was investigated by directly measuring pressure and temperature changes in the reactor and evaluating maximum CO 2 uptake, conversion, storage capacity, induction time, and hydrate growth rate. The results indicated that sodium halides at a concentration of 50 mM (mmol/L) increase CO 2 consumption and conversion to hydrates. In addition, sodium iodide and sodium bromide in a range of concentrations between 50 and 250 mM significantly increased the hydrate formation kinetics. Measurements of the surface potential of CO 2 hydrates formed in the presence of sodium halides showed negative charge on hydrates with the highest zeta potential observed at the concentration of 50 mM. The findings of this part of the research led us to propose a mechanism for the formation of CO 2 hydrates in the presence of sodium halides.The second group of additives extensively investigated in the current research were hydrophobic nano-particles. Two types of hydrophobic fumed silica were studied.iii They produced two types of particle stabilised systems when mixed with water (i.e. silica foam and dry water). The influence of particle hydrophobicity and concentration on hydrate formation kinetics was established by monitoring gas consumption, CO 2 conversion and induction time. The morphology, microstructure, and pore characteristics were elucidated by cryogenic scanning electron microscopy (cryo-SEM), and the elemental distribution and composition were determined by X-ray energy dispersive spectroscopy (EDS). The results indicated that the promoting effect of hydrophobic fumed silica was dependent on the particle hydrophobicity and on the weight ratio of silica to water. The kinetics of CO 2 hydrate formation were ...

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Gas hydrate formation process for pre-combustion capture of carbon dioxide

Cited by 245 publications

References 22 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

Anti-Agglomerator of Tetra-n-Butyl Ammonium Bromide Hydrate and Its Effect on Hydrate-Based CO2 Capture

Kinetics of the formation of CO2 hydrates in the presence of sodium halides and hydrophobic fumed silica nanoparticles

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