12 June 2013 12:59 [Source: ICIS news]
LONDON (ICIS)--Bayer MaterialScience and chemicals engineering firm ThyssenKrupp Uhde have begun commercialising a new technology to produce chlorine with as much as 30% less electricity than conventional processes, the Germany-based companies said on Wednesday.
The new oxygen depolarized cathode (ODC) technology is based on the membrane technology used in chlorine alkali electrolysis, they said.
With the ODC technology, the electrode normally used to produce hydrogen in the membrane process is replaced by an oxygen-depolarized cathode. The addition of oxygen suppresses the formation of hydrogen at the cathode, which is the negative pole. The only products are chlorine and caustic soda. This reduces electricity consumption by as much as 30%, they said.
The companies successfully tested the technology over two years at a demonstration plant at Bayer’s Krefeld-Uerdingen production hub in Germany.
ThyssenKrupp Uhde will be responsible for the global marketing of the technology while chemicals major Bayer MaterialScience will supply the oxygen-depolarized cathodes.
"The new process can make a significant contribution to energy efficiency and thus to the sustainable transformation of energy systems," said Tony Van Osselaer, member of the board of management of Bayer MaterialScience.
In Germany alone, 100% deployment of the technology would save 1% of the total electricity demand, he said.
"This corresponds to the energy consumption of a major city such as Cologne," Van Osselaer added.
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