January, 2009
Hydrogen membrane reactors for CO2 capture
D. Jansen, J.W. Dijkstra, R.W. van den Brink, T.A. Peters, M. Stange, R. Bredesen, A. Goldbach, H.Y. Xuc, A. Gottschalk, A. Doukelise
In the European FP6 research project CACHET hydrogen palladium-based membrane reactors for pre-combustion CO2 capture from natural gas combined cycles are being developed. In the project both the electroless plating method used by DICP and the SINTEF two-stage membrane preparation method based on magnetron sputtering have been successfully up-scaled to membranes with a length of 50 cm. The membranes have been tested extensively with hydrogen/nitrogen gas mixtures, and with simulated feed gas for reforming and water gas shift conditions. The membrane performances in terms of flux, stability and separation efficiency were sufficient to start the design and construction of a membrane reactor test facility, the Process Development Unit (PDU), where membrane tests under relevant process conditions will be performed. Finally, process synthesis and techno-economic analysis indicate overall LHV efficiencies between 46.7 and 47.4 % LHV for natural gas combined cycle power plant with hydrogen membrane reactors for CO2 capture. The cost of electricity is estimated to 73 - 92 €/MWh. These figures are based on 2008 cost data, and the membrane performance after two years of membrane development in CACHET.
© 2008 Elsevier B.V. All rights reserved.
Keywords: Membrane reactors, CO2 Capture, Natural gas combine cycle, Costs.
Source: Greenhouse Gas Control Technologies (GHGT) conference, 16-20 November 2008
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