Pressure-Swing Adsorption Using Layered Adsorbent Beds with Different Adsorption Properties: II?Experimental Investigation

Adsorption ◽  
2005 ◽  
Vol 10 (4) ◽  
pp. 267-275 ◽  
Author(s):  
Yaping L� ◽  
Shain-Jer Doong ◽  
Martin B�low
Materials ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 2024 ◽  
Author(s):  
Xiaofei Hao ◽  
Hongjie Hu ◽  
Zhen Li ◽  
Limei Wu ◽  
Xueqin Liu ◽  
...  

Coalbed methane (CBM) is a kind of unconventional gas. CBM often contains a great deal of air when it comes out of the well. So, it must be condensed and purified before it can be applied. In this paper, raw clinoptilolite (Cp) was treated with grinding, gravimetric concentration, and ion-exchange using different aqueous solutions of salts. Then, the modified Cp powder was prepared into particles as adsorbents. Then, the adsorbents were used for nitrogen/methane separation in pressure swing adsorption (PSA) at the same condition of 0.2 MPa and 298 K. Research results indicated that there were micropores and lots of mesopores in the Cp, and the pores were mainly slit holes formed by sheet stacking. The adsorbents of NH4-Cp, Cs-Cp, and Cu-Cp showed good equilibrium selectivity for CH4, and the equilibrium separation factors of CH4 and N2 were 2.56, 2.31, and 1.95, respectively. The adsorbents of Na-Cp and Ag-Cp showed good equilibrium selectivity for N2, and the equilibrium separation factors of N2 and CH4 were 7.25 and 6.53, respectively. Consequently, the adsorbent of Na-Cp was suitable for nitrogen/methane mixture separation, which could make the concentration of methane concentrated from 19.7% to 30.72%.


2020 ◽  
pp. 127384
Author(s):  
Changkai Zhou ◽  
Ke Zhou ◽  
Huan Li ◽  
Xiang Xu ◽  
Baogen Liu ◽  
...  

1999 ◽  
Author(s):  
David T. Croft ◽  
David K. Friday ◽  
Jeffrey M. Campbell

Fuel ◽  
2021 ◽  
Vol 301 ◽  
pp. 121014
Author(s):  
Humera Ansari ◽  
Elena Rietmann ◽  
Lisa Joss ◽  
JP Martin Trusler ◽  
Geoffrey Maitland ◽  
...  

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