Process Engineering encompasses a very wide knowledge domain which in future will gain even more in breadth. Since process engineering occupies a central position between mechanical engineering, chemistry, electrical engineering and biology, it demands a high degree of interdisciplinary comprehension. Like in scarcely any other engineering discipline, in process engineering there is a continuous need to voyage into uncharted waters. About 100.000 publications and 15.000 patents every year – a volume no longer possible for an individual to digest – bear witness to this development. The number of technically manufactured materials has also become conspicuously large. Practice has shown that environmental protection and safety can only be optimally developed on the basis of thorough knowledge in the area of process engineering. Accordingly, holistic and system engineering considerations are being increasingly integrated into research which are also communicated in teaching. Not only is the optimisation of an individual stage to the forefront, but also the optimisation of the entire system: Apart from the natural science/technical dimension, the processes and products also feature an economic dimension and incorporate themselves in a socio-political framework. What is sought after is therefore not just the technically brilliant solution, but also its feasibility in the given economic and political landscape.