Distributed Fiber Optic Sensor as a New Tool to Monitor Bubble Column Reactors
Sprache des Vortragstitels:
Englisch
Original Tagungtitel:
16th International Conference on Gas-Liquid and Gas-Liquid-Solid Reactor Engineering (GLS-16)
Sprache des Tagungstitel:
Englisch
Original Kurzfassung:
Bubble column reactors are commonly utilized in chemical engineering for gas-liquid systems to facilitate efficient mass transfer. Various experimental studies have investigated the flow behavior in such reactors aiming to aid in proper design and upscaling. However, there is no universal measurement technique to reveal the complex fluid dynamics of these devices. Recently, Fiber Optic Sensors and Distributed Acoustic Sensing (DAS) technology have emerged as a new sensing technique in various areas from structural health monitoring to environmental monitoring. DAS allows for the measurement of vibration and/or acoustic signals over long distances along the fiber and provides spatial resolution in the meter range. The measurement principle behind DAS is based on the Rayleigh scattering of light within the optical fiber. This study presents the use of DAS to monitor an experimental bubble column (7 m height and 100 mm internal diameter). A 150-meter optical cable was installed around the exterior of the column and interrogated by a DAS system. Results show that the system was able to effectively detect bubble flow patterns and distinguished features of Taylor bubbles by sensing their sound and vibration. DAS shows great promise as a technique for revealing complex flow conditions within bubble column reactors.
Forschungs-