At the Staudinger coal-fired power plant near Hanau, Germany, more than 90 percent of the carbon dioxide (CO2) in the facility’s flue gas was separated. Another result of the large-scale project, which has been running since 2009, is that the flue gas scrubbing process doesn’t reduce the plant’s efficiency to the extent that had been expected. Based on this finding, the Siemens process is also suitable for use in larger demonstration facilities.
Separation of CO2 from power plant exhaust gases is one of the ways in which plants that run on fossil fuels can help protect the climate. The CO2 is removed from the flue gas by means of Siemens’ post-combustion process. The carbon dioxide is captured with a special scrubbing agent consisting of an amino acid salt solution. These acids occur in nature and aren’t harmful to the environment. The aqueous amino acid salt solution is almost completely non-volatile, so it generates practically no solvent emissions. Unlike previous processes, the new method doesn’t require extensive cleaning of the flue gas after the carbon dioxide is captured. What’s more, the scrubbing agent removes other pollutants in the flue gas besides CO2 and can be repeatedly reused.
In addition to being very environmentally friendly, the process — which is called PostCap — is also energy efficient. Thanks to improvements to the process made by the experts at Siemens Energy, the power plant’s efficiency is only reduced by about six percentage points. That’s far less than was expected: Previous estimates had indicated a loss of about ten percentage points.
The Siemens process is suited for new power plants using fossil fuels and for retrofitting existing power stations. Siemens has a comprehensive, technologically optimized solution package for CO2 capture. This technology is part of the Siemens environmental portfolio, which generated around €28 billion in sales for the company in fiscal year 2010.
Dr. Norbert Aschenbrenner | Siemens InnovationNews
International network connects experimental research in European waters
21.03.2017 | Leibniz-Institut für Gewässerökologie und Binnenfischerei (IGB)
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17.03.2017 | ISOE - Institut für sozial-ökologische Forschung
Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
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In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...
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