Siemens Reports Breakthrough in CCS Technology

Siemens AG reported that it attained a CO2 capture efficiency of over 90 percent with practically zero solvent emissions. The new post-combustion capture process was reportedly tested for more than 3,000 hours in a pilot facility at the Staudinger power plant operated by E.ON AG.

The high level of stability of the solvent and the extremely low losses will have a positive impact on the operating costs of CO2 capture facilities, Siemens pointed out. While  conventional CO2 capture processes use amines as scrubbing agents, Siemens uses a non-volatile, aqueous amino acid salt solution. As this creates practically no solvent emissions at the outlet of the capture facility, the Siemens PostCap process does not require any complex downstream scrubbing of the flue gas after CO2 capture. In addition to CO2, the solvent also removes further contaminants contained in the flue gas. These contaminants additionally absorbed by the solvent and any by-products produced will in the future be removed from the liquid solution using an innovative separation process, Siemens emphasized.

The Staudinger plant project is sponsored by E.ON and the German Federal Ministry of Economics and Technology within the framework of the COORETEC Initiative. The experience gained so far shall also be put to use in a larger-scale project at the Big Bend coal-fired power plant operated presumably as of 2012 by Tampa Electric, Florida, USA. For this project Siemens Energy, Inc. was awarded funds by the United States Department of Energy.

Source: Siemens

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