Bachelor theses / Master theses / Diploma theses / Compulsory internship

Bubble column reactors are apparatuses of choice regarding multiphase flows/reactions in the chemical process industry. Processes like the Fischer-Tropsch-synthesis are typically carried out in a bubble column reactor. Since most of the reactions are of exothermic nature, the produced heat has to be sufficiently removed to guarantee a stable reactor operation. Therefore, longitudinal flow heat exchanging tubes, which alter the flow behavior of the phases and cover a large portion of the reactor’s cross sectional area, are inserted into the bubble column reactor. For a secure construction of a bubble column with an internal tube bundle heat exchanger, its influence on hydrodynamic, mass transfer and liquid mixing needs to be investigated.

• Student of Process or Chemical Engineering, Technical Chemistry or comparable fields of study
• Enthusiasm in experimental work
• Knowledge in plant commissioning and mass transfer phenomena are welcome, but not compulsory
• Knowledge in Matlab for data acquisition

• Literature research in the field of bubble column reactors with internals and measurement techniques
• Investigation of liquid mixing and mass transfer in bubble columns with internals using oxygen proebes and wire-mesh sensors
• Measurement of mass transfer in bubble column with internals
• Model development for bubble columns with internals, maybe compartment modeling