Reappraisal of the Skarstrom Cycle for CO sub(2) Recovery from Flue Gas Streams: New Results with Potassium-Exchanged Zeolite Adsorbent

CO sub(2)-N sub(2) separation performance of a simple Skarstrom type pressure vacuum swing adsorption (PVSA) cycle is compared with a heavy reflux cycle with a potassium exchanged X zeolite adsorbent. Contrary to literature reports, the performance of the Skarstrom cycle has been found to be better...

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Bibliographic Details
Published in:Industrial & engineering chemistry research 2012-10, Vol.51 (42), p.13765-13772-13765-13772
Main Authors: Nanoti, Anshu, Dasgupta, Soumen, Biswas, Nabanita, Goswami, Amar N, Garg, Madhukar O, Divekar, Swapnil, Pendem, Chandrasekhar
Format: Article
Language:English
Subjects:
Adsorbents
Carbon dioxide
Exchanging
Industrial engineering
Power consumption
Recovery
Streams
Zeolites
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Summary:CO sub(2)-N sub(2) separation performance of a simple Skarstrom type pressure vacuum swing adsorption (PVSA) cycle is compared with a heavy reflux cycle with a potassium exchanged X zeolite adsorbent. Contrary to literature reports, the performance of the Skarstrom cycle has been found to be better under different PVSA process conditions. The best CO sub(2) purity achieved was 92 mol % at a recovery as high as 80% from a feed consisting of 15 mol % CO sub(2) in N sub(2) and under an excellent feed throughput of 790 LSTP/h/kg. The power consumption in the Skarstrom cycle is also found to be lower than in the heavy reflux cycle.
ISSN:0888-5885
1520-5045
DOI:10.1021/ie300982d