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The 120kW Chemical Looping Combustion pilot plant is a fluidized bed system consisting of two circulating fluidized beds. They are connected at the top and bottom via steam fluidized loop seals, in order to ensure gas tightness. The bed material circulates between the two reactors and can transport heat and species (e.g. oxygen, carbon dioxide, etc.) without mixing gas phases of the two reactors. Different fluidization agents can be used for the two reactors at the same time. This allows investigation of processes, which are divided into two different reaction zones. Chemical Looping Combustion can be named as one example. Here, combustion of hydrocarbon fuels is separated into two different zones to obtain a highly concentrated CO2 stream. A metal oxide (the so-called oxygen carrier) circulates between the two fluidized beds. It is oxidized by air in on reactor and reduced by the fuel in the second reactor. This yields two different exhaust gas streams. One consists of nitrogen and excess oxygen, the other one of the combustion products. After condensation of steam, a highly concentrated CO2 stream can be obtained with nearly no energy penalty.
The plant is equipped with extensive measurement equipment (pressure, temperature, mass flows, gas analytics) and can be operated at temperature up to 1050°C. It is also possible to work with pollutants like sulphur or ammonia. In this case, more sophisticated gas analytics is available.
Investigation of (reactive) bed materials for fluidized bed processes (e.g. chemical looping combustion);
Investigation of innovative fluidized bed processes;
Methods & Expertise for Research Infrastructure
The unit has a total operational experience of more than 1500 hours. With this extensive experience, it is possible to perform experimental campaigns very efficiently. Extensive measurement equipment is aivailable and can be easily extenden if necessary. Tools for data evaluation allow fast data processing and first results can be obtained in short term.
Institut für Verfahrenstechnik, Umwelttechnik und technische Biowissenschaften
Shell Global Solutions (Netherlands)
Spanish National Research Council, CSIC (Spain)
IFP Energies Nouvelles (France)
Institut National Polytechnique de Toulouse (France)
Darmstadt University of Technology (Germany)
Euro Support Advanced Materials (Netherlands)
Johnson Matthey (United Kingdom)
Bertsch Energy (Austria)
Electricite de France (France)
Universität für Bodenkultur (Austria)
Göteborg Energi (Sweden)
"Fate of sulfur in chemical looping combustion of gaseous fuels using a copper-based oxygen carrier", 2018, Pachler, R.F., Mayer, K.
Penthor, S., Kollerits, M., Hofbauer, H., International Journal of Greenhouse Gas Control 71 (https://doi.org/10.1016/j.ijggc.2018.02.006)
"Investigation of the performance of a copper based oxygen carrier for chemical looping combustion in a 120kW pilot plant for gaseous fuels", 2015, Penthor, S., Zerobin, F., Mayer, K., Pröll, T., Hofbauer, H., Applied Energy 145 (https://dx.doi.org/10.1016/j.apenergy.2015.01.079)
"Experimental Study of the Path of Nitrogen in Chemical Looping Combustion Using a Nickel-Based Oxygen Carrier", 2014, Penthor, S., Mayer, K., Pröll, T., Hofbauer, H., Energy & Fuels 10 (https://dx.doi.org/10.1021/ef500744f)
"Chemical-looping combustion of raw syngas from biomass steam gasification – Coupled operation of two dual fluidized bed pilot plants", 2014, Penthor, S., Mayer, K., Kern, S., Kitzler, H., Wöss, D., Pröll, T., Hofbauer, H., Fuel 127 (https://dx.doi.org/10.1016/j.fuel.2014.01.062)