(234aa) CO2 Removal from CO2-CH4 Mixtures Using a Shell-and-Tube Separator and Its CFD Analysis
AIChE Annual Meeting
2016
2016 AIChE Annual Meeting
Environmental Division
Poster Session: Environmental Division
Monday, November 14, 2016 - 6:00pm to 8:00pm
 T�� performance of the gas separator for binary CH4-CO2 mixture with zeolite membrane is experimentally known to be influenced by the composition, which can change along the length of separator: this makes it more difficult to formulate the concentration dependency. Then, it was assumed that the permeances of CO2 and CH4 were as follows; PCO2=PCO20(1+a(1-x)) and PCH4=PCH40(1+bx), where x was the mol fraction of CO2. The CFD code used in this study is STAR-CCM+. The constant a and b is determined so as to agree with the experimental result. It was made clear that the permeances of two gases for the chabazite zeolite membrane show the concentration dependences assumed. In addition, the concentration distribution and flow rate within the separator were visualized, helping understand the separation manner inside the separator employed.
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