Ein auf erneuerbare Energiequellen ausgerichtetes Versorgungssystem benötigt ein hohes Maß an Flexibilität, um Systemstabilität zu sichern. Lastmanagement kann einen großen Beitrag leisten und die chemische Industrie als einer der größten Verbraucher elektrischer Energie dabei eine wichtige Rolle spielen. Die Analyse der bisher hierzu durchgeführten Studien zeigt große Potenziale für den Chlor‐Alkali‐Prozess und die Luftverflüssigung. Die variablen Kosten sind mit anderen Flexibilisierungsoptionen vergleichbar. Zur Bestimmung der tatsächlich realisierbaren Potenziale bedarf es noch weiterer Untersuchungen.

This work presents multi-scale approaches to investigate 3D printed structured Mn–Na–W/SiO2 catalysts used for the oxidative coupling of methane (OCM) reaction. The performance of the 3D printed catalysts has been compared to their conventional analogues, packed beds of pellets and powder. The physicochemical properties of the 3D printed catalysts were investigated using scanning electron microscopy, nitrogen adsorption and X-ray diffraction (XRD). Performance and durability tests of the 3D printed catalysts were conducted in the laboratory and in a miniplant under real reaction conditions. In addition, synchrotron-based X-ray diffraction computed tomography technique (XRD-CT) was employed to obtain cross sectional maps at three different positions selected within the 3D printed catalyst body during the OCM reaction. The maps revealed the evolution of catalyst active phases and silica support on spatial and temporal scales within the interiors of the 3D printed catalyst under operating conditions. These results were accompanied with SEM-EDS analysis that indicated a homogeneous distribution of the active catalyst particles across the silica support.

An experimental study of the potential autothermal reactor operation for the ethylene production via oxidative coupling of methane based on the ignition-extinction behavior for a Mn-Na 2 WO 4 /SiO 2 catalyst is presented. The possibility of benefiting from the heat released during the reaction is analyzed. The effect of different process variables, challenges, and limitations on the autothermal oxidative coupling of methane reactor operation are investigated in which a moderately large amount of heat appears.

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