Yang, Jiangfeng ; Krishna, Rajamani ; Li, Junmin ; Li, Jinping (2014) Experiments and simulations on separating a CO2/CH4 mixture using K-KFI at low and high pressures Microporous and Mesoporous Materials, 184 . pp. 21-27. ISSN 1387-1811
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.micromeso.2013.09.026
Abstract
Separation of CO2 from CH4 is needed in order to use low-quality biogas or landfill gas and to reduce greenhouse gas emissions. To study the separation of a CO2/CH4 gas mixture, K-KFI (Si/Al = 4.59) sorbent was synthesized and pelletized. We performed breakthrough experiments at flow rates of 16.6 and 30 N mL/min under ambient temperature and pressure (298 K, 100 kPa). The breakthrough experiments results showed that K-KFI separated a 40%/60% mixture of CO2/CH4 better than a 50%/50% mixture. Furthermore, the separation performance of K-KFI is superior to that of commercial sorbents zeolite-5A and 13X under the same conditions. Simulations of the breakthrough of binary mixed gases CO2/CH4 = 40%/60%, yield results that are in good agreement with our experimental data. By performing breakthrough simulations at a total pressure of 2 MPa, we demonstrated that pure CH4 can be separated from CO2/CH4 gas mixtures under high pressure and that pure CH4 can be recovered in the initial stages of the breakthrough.
Item Type: | Article |
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Source: | Copyright of this article belongs to Elsevier Science. |
Keywords: | Separate CO2/CH4; Zeolite; K-KFI; Simulation |
ID Code: | 111780 |
Deposited On: | 26 Sep 2017 12:49 |
Last Modified: | 26 Sep 2017 12:49 |
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