Continuous hydrate-based CO2 separation from H2 + CO2 gas mixture using cyclopentane as co-guest

Misawa, Takuma; Ishikawa, Tomoaki; Takeya, Satoshi; Alavi, Saman; Ohmura, Ryo

doi:10.1016/j.jiec.2023.01.026

Cited by 17 publications

(1 citation statement)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has a good application prospect in carbon capture and storage. Compared with the traditional CO 2 separation technologies – (chemical absorption, pressure swing adsorption, and membrane separation), the gas separation based on hydrate technology has the advantages of good economy, environmental friendliness, and reusability. It has the potential to be widely used in the future.…”

Section: Introductionmentioning

confidence: 99%

Effect of 1,3-Dioxolane on Gas Separation Kinetics via Gas Hydrates

Ni,

Lv,

Zhong

et al. 2023

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

The mixed gas separation of hydrate technology can promote biogas separation, purify CO2, and improve the quality of CH4 while reducing carbon emissions and realizing efficient CO2 capture and storage. Herein, we identified the effects of low-content 1,3-dioxolane (DIOX) on the separation efficiency and kinetics of a CH4/CO2 (6:4) mixture via gas hydrates. The experimental results showed that the hydrate formation with DIOX had five stages. The purification rate of CH4 could be effectively accelerated with the increase in DIOX concentrations. At 4.5 MPa and 274.65 K, the induction time of hydrate formation could be reduced by 93.3% compared to that of the pure water system. However, higher driving forces could lead to dense hydrate film and reduce the separation efficiency of CO2/CH4. The suitable pressure and temperature (e.g., 4 MPa, 274.65 K) could alleviate this problem, and it could result in a CO2 recovery of 92.2%. When the gas–liquid ratio was 3.5, the CO2 recovery could be increased by 23% and the CO2 phase equilibrium constant could be increased by 2.8 times compared to that of the pure water system.

show abstract