Carbon‐intensive sectors like steel or chemical industry need to reduce their emissions and their dependence on fossil feedstocks to help reaching climate goals. Coupling previously independent sectors by carbon capture and utilization and power‐to‐X technologies are promising concepts. Within the Carbon2Chem® project, a generic approach for the evaluation of various plant configurations with respect to future market and energy scenarios is presented. Economically and ecologically favorable concepts for the recycling of steel mill gases to valuable products, especially methanol, by integrating high amounts of renewable energies are identified for the year 2030.

A methodology for identifying suitable locations for the CO2‐based production of olefins in Germany is presented. Based on electricity and CO2 requirements, locations are identified that can provide sufficient CO2 and renewable energy for the conversion of CO2 to olefins. In addition, the use of existing infrastructures is taken into account. The regional, technical renewable energy potential in Germany is sufficient to produce ∼ 800 kt of olefins from CO2‐based methanol per year in one plant. But the currently available CO2 point sources with high CO2 concentrations of around 100 % are not sufficient to meet the CO2 requirement of an 800 kt a−1 methanol‐to‐olefins plant. If existing refineries are preferred due to existing infrastructure services, locations in the north of Cologne, in Lower Saxony, and in Brandenburg are particularly suitable. A full substitution of fossil olefins by CO2‐based olefins is possible in Germany. The challenge is to provide sufficient renewable electricity for the production of H2 with a low CO2 intensity.

This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. Die rohstoffliche Nutzung von CO 2 gewinnt in Anbetracht des Klimaschutzes und als alternative Rohstoffbasis zunehmend an Bedeutung. Sowohl elektrochemische Direktsynthesen als auch thermochemische Verfahren zur CO 2 -Konversion gehen mit einem hohen Bedarf an elektrischer Energie einher. Ein Beitrag zum Klimaschutz ist nur im Fall einer CO 2 -armen Stromerzeugung möglich, wie sie z. B. durch die Nutzung von Windkraft oder Solarenergie realisiert werden kann. Vor diesem Hintergrund präsentiert der vorliegende Artikel eine Methodik zur Identifizierung von geeigneten Standorten für die CO 2 -basierte Produktion von Olefinen in Deutschland.Schlagwörter: Carbon capture and use, CO 2 -Nutzung, CO 2 -Quellen, Methanol-to-Olefins, StandortplanungThe use of CO 2 as raw material is increasingly gaining in importance as an option for climate protection and as an alternative raw material feedstock. Both direct electrochemical syntheses and thermochemical processes are associated with a high demand for electrical energy. A contribution to climate protection is only possible in the case of low-carbon power generation, as can be realized, e.g., by wind power or solar energy. This article presents a methodology for identifying suitable sites for the CO 2 -based production of olefins in Germany.