13 November 2018
The SNG can be used as fuel in cogeneration and heating plants as well as in cars or trucks. Biogas facilities produce the renewable gas mainly by fermenting biological waste. In countries with a large forestry sector, such as Finland or Sweden, there is a high potential for the production of SNG from waste wood. By means of biomass gasification, a synthesis gas is produced, which mainly consists of hydrogen, carbon monoxide, and carbon dioxide.
This mix can then be converted into high-quality methane by methanation. Researchers of KIT’s Engler-Bunte Institute (EBI) and from the Research Centre of the German Technical and Scientific Association for Gas and Water (DVGW) have successfully tested a highly efficient methanation process in the city of Köping, Sweden.
The core components of the plant are honeycomb catalysts that were developed and optimized for use by the “Catalytic Fuel Conversion” group of EBI headed by Siegfried Bajohr. “In a single-stage process, metallic nickel catalysts convert hydrogen and carbon monoxide and, in case of sufficient hydrogen supply, also carbon dioxide into methane and water,” Siegfried Bajohr says.
“Apart from use in natural gas vehicles, methane can also be fed into the existing European natural gas infrastructure,” says Felix Ortloff, EBI. In the opinion of the scientists, methane can already replace fossil natural gas in many applications today. “Moreover, the technology can also be applied in the power-to-gas context,” Ortloff adds. In this case, water is split into hydrogen and oxygen by electrolysis using renewable electric energy. Then, the hydrogen reacts with carbon dioxide to synthetic methane. Apart from strain reduction of power grids, integration of biogas or biomass gasification plants in power-to-gas concepts is considered to be advantageous by researchers. Production capacity of the plants might be doubled, as the carbon dioxide arising from biogas production is converted completely into methane.
http://www.kit.edu/
Production of renewable gas from waste wood
Researchers from the Karlsruhe Institute of Technology (KIT) succeeded in producing renewable methane from a biomass-based synthesis gas mixture in their pilot plant for honeycomb methanation. The quality of this synthetic natural gas (SNG) is comparable to that of fossil natural gas.
 Photo: Andreas SpiegelThe key components: honeycomb catalysts convert hydrogen and carbon monoxide into methane and water. |
This mix can then be converted into high-quality methane by methanation. Researchers of KIT’s Engler-Bunte Institute (EBI) and from the Research Centre of the German Technical and Scientific Association for Gas and Water (DVGW) have successfully tested a highly efficient methanation process in the city of Köping, Sweden.
The core components of the plant are honeycomb catalysts that were developed and optimized for use by the “Catalytic Fuel Conversion” group of EBI headed by Siegfried Bajohr. “In a single-stage process, metallic nickel catalysts convert hydrogen and carbon monoxide and, in case of sufficient hydrogen supply, also carbon dioxide into methane and water,” Siegfried Bajohr says.
“Apart from use in natural gas vehicles, methane can also be fed into the existing European natural gas infrastructure,” says Felix Ortloff, EBI. In the opinion of the scientists, methane can already replace fossil natural gas in many applications today. “Moreover, the technology can also be applied in the power-to-gas context,” Ortloff adds. In this case, water is split into hydrogen and oxygen by electrolysis using renewable electric energy. Then, the hydrogen reacts with carbon dioxide to synthetic methane. Apart from strain reduction of power grids, integration of biogas or biomass gasification plants in power-to-gas concepts is considered to be advantageous by researchers. Production capacity of the plants might be doubled, as the carbon dioxide arising from biogas production is converted completely into methane.
http://www.kit.edu/
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