Pressure swing adsorption processes to purify oxygen using a carbon molecular sieve

Jee, Jeong Geun; Kim, Min Bae; Lee, Chang Ha

doi:10.1016/j.ces.2004.09.050

Cited by 99 publications

(86 citation statements)

References 19 publications

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“…Another option to separate Ar from O 2 is by nonequilibrium methods. Another type of adsorbent, carbon molecular sieves (CMS), with a kinetic selectivity of oxygen over argon has been investigated and employed for production of purified oxygen and argon . Ba‐RPZ‐3, a titanosilicate molecular sieve, was found to favor oxygen based on the sieving properties of the adsorbent and the difference in size between O 2 molecules and Ar atoms .…”

Section: Introductionmentioning

confidence: 99%

Production of argon free oxygen by adsorptive air separation on Ag‐ETS‐10

et al. 2012

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in Wiley Online Library (wileyonlinelibrary.com).The purification of different components of air, such as oxygen, nitrogen, and argon, is an important industrial process. Pressure swing adsorption (PSA) is surpassing the traditional cryogenic distillation for many air separation applications, because of its lower energy consumption. Unfortunately, the oxygen product purity in an industrial PSA process is typically limited to 95% due to the presence of argon which always shows the same adsorption equilibrium properties as oxygen on most molecular sieves. Recent work investigating the adsorption of nitrogen, oxygen and argon on the surface of silverexchanged Engelhard Titanosilicate-10 (ETS-10), indicates that this molecular sieve is promising as an adsorbent capable of producing high-purity oxygen. High-purity oxygen (99.7þ%) was generated using a bed of Ag-ETS-10 granules to separate air (78% N 2 , 21% O 2 , 1% Ar) at 25 C and 100 kPa, with an O 2 recovery rate greater than 30%. V V C 2012 American Institute of Chemical Engineers AIChE J, 59: 982-987, 2013 Compressed air (a mixture of 78% N 2 , 21% O 2 and 1% Ar) was introduced into a column containing 130 g of pelletized Ag-ETS-10 (sieved to a size between 0.28-0.84 mm) at a flow rate of 126 mL/min (bed volume 150 mL). Composition of the outlet gas was determined by GC analysis.

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Section: Introductionmentioning

confidence: 99%

Production of argon free oxygen by adsorptive air separation on Ag‐ETS‐10

et al. 2012

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“…The adsorption of gas or vapor is widely used in the field of gas separation [1,2], purification [3,4], adsorption chillers [5][6][7][8][9], cryocoolers [10] and energy storage systems [11][12][13]. Each of the above mentioned applications requires basic adsorption data as a function of pressure (P), temperature (T) and the amount of adsorbate (q) for understanding and predicting their performances.…”

Section: Introductionmentioning

confidence: 99%

Isotherms and thermodynamics for the adsorption of n-butane on pitch based activated carbon

Saha

Chakraborty

Koyama

et al. 2008

International Journal of Heat and Mass Transfer

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“…The selectivity based on steric effect or equilibrium or kinetics is taken advantage of in the adsorption separation process [34]. Adsorption separation based on kinetic selectivity has a potential to capture CO 2 from N 2 /CO 2 mixture after successful separation of N 2 /O 2 , CH 4 /CO 2 and CH 4 /N 2 on carbon molecular sieve CMS [35][36][37][38][39], Using an economic adsorbent also raises the process efficiency of cost and of energy for CO 2 capture. The carbogenic adsorbents are lightweight, elastic, heat and electric conductive (may be used in electric swing adsorption), cheap, easy-shapeable from precursors, higher specific surficial, thermal and chemical stable, durable, non-moisture sensitive, stable under the impurity, environment-protective and energy saving, it solves many difficulties of the other adsorbents possess in the process of implementation [40][41][42][43][44].…”

Section: Introductionmentioning

confidence: 99%

Supercritical Adsorption Based CO2 Capture from N2/CO2 Mixture by Activated Carbon and Carbon Molecular Sieve

Nuermaiti¹,

Li²

2017

AJCHE

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Abstract:The adsorption equilibria of pure supercritical N 2 and CO 2 on the activated carbon Yigao-A and carbon molecular sieve CMS-200 were measured by the gravimetric method (IGA-001, Hiden) in the temperature region of 313.15-393.15 K and pressure region of 0-2 MPa. The adsorption kinetics of N 2 and of CO 2 on the activated carbon Yigao-A and carbon molecular sieve CMS-200 at 313.15 K in 50 kPa were tested. The Langmuir-Freundlich model was applied to analyze the adsorption isotherms. The adsorption kinetics was investigated with the Fickian model. The analysis of adsorption equilibria showed that a high temperature, low pressure is beneficial to the equilibria based selective adsorption of supercritical CO 2 on the activated carbon Yigao-A and carbon molecular sieve CMS-200. The investigation of adsorption kinetics exposed that the carbon molecular sieve CMS-200 is able to separate CO 2 from the N 2 /CO 2 mixture by its kinetic effect, and lower temperature is preferred.

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Pressure swing adsorption processes to purify oxygen using a carbon molecular sieve

Cited by 99 publications

References 19 publications

Production of argon free oxygen by adsorptive air separation on Ag‐ETS‐10

Production of argon free oxygen by adsorptive air separation on Ag‐ETS‐10

Isotherms and thermodynamics for the adsorption of n-butane on pitch based activated carbon

Supercritical Adsorption Based CO<sub>2</sub> Capture from N<sub>2</sub>/CO<sub>2</sub> Mixture by Activated Carbon and Carbon Molecular Sieve

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Pressure swing adsorption processes to purify oxygen using a carbon molecular sieve

Cited by 99 publications

References 19 publications

Production of argon free oxygen by adsorptive air separation on Ag‐ETS‐10

Production of argon free oxygen by adsorptive air separation on Ag‐ETS‐10

Isotherms and thermodynamics for the adsorption of n-butane on pitch based activated carbon

Supercritical Adsorption Based CO&lt;sub&gt;2&lt;/sub&gt; Capture from N&lt;sub&gt;2&lt;/sub&gt;/CO&lt;sub&gt;2&lt;/sub&gt; Mixture by Activated Carbon and Carbon Molecular Sieve

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Supercritical Adsorption Based CO<sub>2</sub> Capture from N<sub>2</sub>/CO<sub>2</sub> Mixture by Activated Carbon and Carbon Molecular Sieve