Abstract
AbstractPower‐to‐Gas approaches comprise different activities to store electric power in form of gaseous energy carriers like hydrogen or methane. The synthesis of SNG (substitute natural gas) and its injection into the natural gas grid allows the utilization of the well‐established infrastructure for natural gas storage, distribution and utilization without the need for further changes to the energy system. At the Engler‐Bunte‐Institut research focuses on catalytic methanation in catalytically coated metallic honeycomb reactors and in slurry bubble column reactors with the aim of evaluating alternative reactor concepts offering optimized heat transfer characteristics as well as maximizing the possibility of dynamic operation. Both concepts are attractive for small to medium scale power‐to‐gas applications. Hence, a scale‐up was performed for bothreactor concepts with the aim of implementation on commercial scale.
Highlights
The increasing share of fluctuating renewable electric energy in future energy systems causes an increasing dynamic behavior of the energy system depending on the availability of wind and sunlight
PtG approaches establish a link between the electric energy network with limited storage capacities and the natural gas network with the aim of overcoming the lack of mid- to long-term storage capacities of the first
Thema et al [3] recently published an overview of currently operating PtG plants showing a high research interest and exponential global trend to increase installed PtG power as a key technology for future energy systems
Summary
The increasing share of fluctuating renewable electric energy in future energy systems causes an increasing dynamic behavior of the energy system depending on the availability of wind and sunlight. In this context, storage of electric energy in form of chemical energy carriers is a viable solution to match production with demand. Methane qualifies as a gaseous energy carrier because of its versatility and established process technologies. There are many possible routes to store electric energy in form of gaseous energy carriers using Power-to-Gas (PtG) processes [1, 2]. Thema et al [3] recently published an overview of currently operating PtG plants (for H2 as well as for SNG production) showing a high research interest and exponential global trend to increase installed PtG power as a key technology for future energy systems
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