The methodological work focuses on four application areas and their combination. All four areas deal with the objective of process intensification, while different means of pursuing this objective address different scales. While reactive and hybrid processes primarily serve process intensification on the process and equipment level, innovative equipment concepts generally pursue intensification on the equipment and transport level, which is achieved by structuring, miniaturization and the targeted improvement of transport phenomena. Especially in the field of biological processes, process intensification at the phase and molecular level also plays a special role, since the process performance depends heavily on the optimal integration and immobilization of the catalysts.