• Proceedings of the Korean Environmental Sciences Society Conference
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• 2000.05a
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• pp.31-36
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• 2000

• Proceedings of the Korea Society for Energy Engineering kosee Conference
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• 2001.11a
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• pp.311-316
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• 2001

• Proceedings of the Korean Environmental Sciences Society Conference
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• 2001.11a
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• pp.19-21
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• 2001

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.41 no.9
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• pp.56-62
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• 2012

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.38 no.2
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• pp.36-40
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• 2009

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.44 no.10
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• pp.24-32
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• 2015

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 1999.04a
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• pp.29-30
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• 1999

• Korean Chemical Engineering Research
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• v.49 no.6
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• pp.865-868
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• 2011

An organic substance, hydroquinone is used to form clathrate compounds in order to identify separation characteristics of carbon dioxide in flue gas. Formed samples were analyzed by means of the solid-state $^{13}C$ nuclear magnetic resonance (NMR) and Raman spectroscopic methods to examine enclthration behaviors of guest species. In addition, elemnetal analysis was also performed in order to evaluate separation efficiency of $CO_2$ in a quantitative way. Based on the experimental results obtained, $CO_2$ molecules are found to be captured into the clathrate compound more readily than $N_2$ molecules. Moreover, because such preferential enclathration is even more significant at low pressure conditions, $CO_2$ separation/recovery from flue gas can be achieved with minimizing additional energy cost for the technique. Experimental results obtained in this study can provide useful information on separation techniques of flue gas or selective separation of gas mixtures in the future.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.32 no.10
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• pp.729-753
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• 2008

Oxy-fuel combustion is a reliable way for the reduction of pollutants, the higher combustion efficiency and the separation of carbon dioxide. The review of recent research trends and the prospects of oxy-fuel combustion were presented. The difference in characteristics among oxy-fuel combustion, conventional air combustion, oxy-fuel combustion with flue gas recirculation (FGR) technique was investigated. Recent experiments of oxy-fuel combustion with/without FGR were surveyed in various ways which are optimized burner design, flame characteristics, the soot emission, the radiation effect, the NOx reduction and the corrosion of combustor. Numerical simulation is more important in oxy-fuel combustion because flame temperature is so high that conventional measurement devices have a restricted application. Equilibrium and non-equilibrium chemical reaction mechanisms for oxy-fuel combustion were investigated. Combustion models suitable for the numerical simulation of non-premixed oxy-fuel flame were surveyed.

• Journal of Hydrogen and New Energy
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• v.30 no.3
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• pp.289-295
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• 2019

Effects of various reaction factors such as pressure, time, and temperature on clathrate formation were investigated for hydroquinone with $CO_2$ and $N_2$. Experimental and spectroscopic results indicate that $CO_2$ plays more preferential role in forming hydroquinone clathrates than $N_2$. These results can be used in application of selective $CO_2$ separation from flue gases with the formation of clathrate compounds.