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    CRC 1615 - Project A02: Quantitative real-time 3D electrical impedance tomography of multiphase reactors
    Project A02 develops the methodology of quantitative, real-time, 3D Electrical Impedance Tomography (EIT) for process monitoring in the SMART multiphase reactor for catalytic hydrogenolysis of glycerol. In A02, EIT will be combined with synchronized capillary sampling of multiphase flows, converting impedance data into process variables like gas-holdup, bubble size distribution and phase flow rates. An EIT measurement cell will be built featuring a higher number of electrodes (100-400) than existing systems (32) for performing EIT over a frequency range (100 kHz-1 MHz) on water/glycerol/propanediol/hydrogen flows at temperatures up to 250°C and 50 bar H2 pressure. Tailored measurement electronics and reconstruction algorithms will be developed.
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    CRC 1615 - Project A07: Highly integrated sensors for in-line detection of granulation state in fluidised bed reactors
    In project A07 novel Lagrangian sensor particles will be developed, which allow the measurement of temperature, humidity and applied coating layer thickness during fluidized bed spray granulation based on impedance spectroscopy. The first prototype is of 25 mm size, whereby further miniaturization to 5 mm will be achieved by designing and fabricating an application specific integrated circuit (ASIC). Particle position will be measured by a magnetic particle tracking setup, which is for the first time adapted to a fluidized bed spray granulation process.
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