Condensed Rotational Separation of CO2

R.J. van Benthum, H.P. van Kemenade, J.J.H. Brouwers and M. Golombok

Applied Energy, 2012, vol. 93, issue C, 457-465

Abstract: Condensed Rotational Separation is a technique in which flue gas is cleaned by condensation of the CO2 and mechanical centrifugal separation. It requires partial purification of CO2 to concentrations above 50% in the flue gas, prior to separation. This purification can be realized with existing techniques like oxygen enriched coal combustion or CO2 separating membranes. Combined with a partial enrichment technique, Condensed Rotational Separation provides an answer that can compete with promising conventional techniques for CO2 capture, like oxy-fuel combustion or amine absorption. These conventional techniques produce a waste stream with a high CO2 purity that can be compressed to supercritical pressure for transport and storage. It is shown that the energy consumption of Condensed Rotational Separation is only slightly more than gas compression of a sequestration stream resulting from conventional separation techniques. The net result is that the total energy consumption becomes less because of the savings due to partial oxygen/CO2 enrichment.

Keywords: CO2 separation; Coal-fired power plants (search for similar items in EconPapers)
Date: 2012
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Citations: View citations in EconPapers (2)

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DOI: 10.1016/j.apenergy.2011.12.025

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