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CCS Project at Plant Barry Begins Storing CO2 Underground
  U.S.

Thursday, August 22, 2012

The carbon capture and storage project at the 2,657 MW Barry coal-fired power plant in Alabama is now injecting carbon dioxide (CO2) underground, making it the world’s first large-scale coal-fired CO2 capture facility, according to the U.S. Department of Energy (DOE).
The Anthropogenic Test, conducted by the Southeast Regional Carbon Sequestration Partnership, uses CO2 from a CCS facility at Plant Barry that began operating in June 2011. The test will help demonstrate the feasibility of carbon capture, utilization and storage. The system is designed to capture approximately 150,000 tons of CO2 a year for permanent underground storage.
Mitsubishi Heavy Industries developed the KM-CDR technology that uses a 25 MW slip of flue gas from the plant. The CO2 in the flue gas reacts with an amine solvent before being captured and compressed, making it ready for pipeline transport. Once captured, the CO2 is transported approximately 12 miles west to a geologic structure called the Citronelle Dome within the Paluxy saline formation. The formation is more than 9,000 feet underground and is overlain by multiple geologic confining units that serve as barriers to prevent CO2 from escaping.
CO2 injection will take place over two years at a rate of up to 550 metric tons of CO2 per day. Several monitoring technologies will be used to track the CO2 plume, measure the pressure front, evaluate CO2 trapping mechanisms and ensure that the CO2 remains in the formation. The site will be closed in 2017 following three years of post-injection monitoring. When that happens, the wells will either be plugged and abandoned according to state regulations, or re-permitted for CO2-enhanced oil recovery and CO2 storage operations. If it is re-permitted, the CO2 would be used to recover stranded oil while also being sequestered in a geologic formation.
The project is jointly developed by the DOE, Southern Co. (NYSE: SO), the Electric Power Research Institute and Mitsubishi Heavy Industries. (Power Engineering)
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