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ECN publication
Membrane reactors: key technology for production of de-carbonised energy carriers
Published by: Publication date:
ECN 1-12-2004
ECN report number: Document type:
ECN-RX--04-130 Conference Paper
Number of pages: Full text:
7 Download PDF  

Presented at: 7th International Conference on GreenHouse Gas Control Technologies (GHGT-7), Vancouver, Canada, 5-9 september 2004.

Pre-Combustion De-Carbonisation (PCDC) has been identified as promisingconcept to capture CO2 in power generation systems. Membrane reactors are expected to play a key role in the development in novel PCDC schemes, next to gas turbines and fuel cells. This paper focuses on the application of membrane reactors with hydrogen separating membranes. A generalized layout of systems for power production with H2 membranes is discussed. An analysis revealed that the systems all exhibited certain key elements, with several options to fulfil the function in that element. The combination of a shift membrane burner (SMB) and an SOFC offer the possibility for high-efficiency power generation with CO2 capture. The impact of the fuel efficiency on the system efficiency and key system parameters is discussed. Optimum efficiency was found at a fuel utilisation of 75.5%. The integration of a membrane reformer (MREF) in a gas turbine cycle offers the possibility for power production with a low carbon capture penalty. The results of an economic analysis are provided, which give targets for membrane development. The membrane flux target is 50-100 kW/m2 at corresponding membrane costs of 700-1400 ?/m2.

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