Study on influencing factors of forming hydrate membrane in CO_2/N_2 separation

2011 
Greenhouse gases have become a serious world problem.CO2 is known to be the most prevalent greenhouse gas and has the potential to cause severe changes in the global climate.New energy-saving and effective technology to capture CO2 should be developed in present factory for CO2 Emission Reduction.It has scientific significance and broad application prospects in reducing the greenhouse effect and environmental protection.Hydrate membrane separation which combined hydrate with membrane separation has been proposed.Influencing factors of forming hydrate membrane such as the pore size of ceramic tube,gas composition,pressure and temperature were investigated using the self-established experimental apparatus of hydrate membrane separation for CO2 capture.The results demonstrate that α-Al2O3 ceramic tube with average pore diameter of 380 nm is better than the others for forming hydrate membrane.The CO2/N2 mixture gas with more CO2 will be more easy to form flawless hydrate membrane under condition of higher pressure,lower temperature and longer static time.
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