Sunday, March 6, 2011

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Renewable electricity to generate hydrogen

Siemens is participating in a research project for the conversion of carbon dioxide (CO2) into useful chemical building blocks. The separated at a fossil combustion gas could thus be deprived permanently of the atmosphere, which can help mitigate the greenhouse effect. The energy for the conversion of relatively inert CO2 to come from renewable sources.


The project CO2RRECT (CO2 Reaction using Renewable Energies and Catalytic Technologies) by the Federal Ministry of Research funded for three years with eleven million €. Partners include Bayer, RWE and numerous universities and institutes. Siemens contributes a key component of the research department, Corporate Technology: an Electrolyzer for industrial production of hydrogen. Is currently investing heavily in wind and solar energy. The current yield from these renewable sources but it will vary depending on the weather. The industry is looking for ways to use emerging surpluses sense. For today, wind plants are partially decoupled from the grid, because there are no customers for the electricity there. In a first step, the power to split water into its elements hydrogen and oxygen are used. Siemens to build a prototype of an Electrolyzer. Goal is to build a 100-kilowatt unit in a container. In the project this Electrolyzer be connected to the mains and will always be in operation when excessive or very cheap electricity is available.

The generated hydrogen can react with carbon dioxide and convert the gas into intermediate products such as carbon monoxide or formic acid. This could in turn recyclable plastics or fuels can be produced. The project is the carbon dioxide from the RWE lignite power plant Niederaußem where a flue gas scrubber is operated. Siemens is also investigating the possibility of the energy-rich hydrogen umzuwaldeln industrial scale turbines in power again. Together with Russian partners CT researchers are looking for combustion processes that produce as few nitrogen oxides. Click to connect to natural gas compared to much higher temperatures, which will include special requirements on the materials.



Image: http://www.siemens.com/press/de/pressebilder
Source: idw

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