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

作者：Lee Hyun Ju; Lee Ju Dong; Linga Praveen; Englezos Peter; Kim Young Seok; Lee Man Sig; Kim Yang Do^*

来源：Energy, 2010, 35(6): 2729-2733.

DOI：10.1016/j.energy.2009.05.026

• Gas hydrate
• CO(2) recovery
• Gas separation
• Pre-combustion
• IGCC

In this study, gas hydrate from CO(2)/H(2) gas mixtures with the addition of tetrahydrofuran (THE) was formed in a semi-batch stirred vessel at various pressures and temperatures to investigate the CO(2) separation/recovery properties. This mixture is of interest to CO(2) separation and recovery from Integrated Gasification Combine Cycle (IGCC) power plants. During hydrate formation the gas uptake was determined and composition changes in the gas phase were obtained by gas chromatography. The impact of THE on hydrate formation from the CO(2)/H(2) was observed. The addition of THF significantly reduced the equilibrium formation conditions. 1.0 mol% THF was found to be the optimum concentration for CO(2) capture based on kinetic experiments. The present study illustrates the concept and provides thermodynamic and kinetic data for the separation/recovery of CO(2) (pre-combustion capture) from a fuel gas (CO(2)/H(2)) mixture.

• 出版日期2010-6