In response to a funding opportunity recently issued by the US Department of Energy’s Clean Coal Power Initiative, Praxair (working with the Jamestown Oxy-Coal Alliance) intend to submit a proposal to demonstrate technology designed to capture carbon dioxide emissions from both new and existing coal-fired electricity-generating plants. If successful, the demonstration project would be the first of its kind in the United States, integrating several tested technologies for the first time.
Helping companies such as Praxair to develop the technology is funding of $340 million available from The Department of Energy (DOE) which will be distributed among chosen recipients. The DOE will consider cooperative agreements between government and industry to demonstrate, at a commercial scale, new technologies that capture carbon dioxide emissions from coal-fired power plants and either sequester the carbon dioxide or put it to beneficial use.
Oxy-coal technology involves the introduction of pure oxygen instead of air into the utility boiler, creating a highly concentrated stream of carbon dioxide which is more economical to capture than emissions from existing systems. The technology is designed to capture more than 90% of the carbon dioxide generated, and also to further reduce emissions of sulphur dioxide, nitrogen oxides and mercury.
The proposed project would integrate Praxair’s oxy-coal technology with a CFB boiler generating system to be supplied by Foster Wheeler. Praxair would provide oxygen supply facilities; oxygen mixing and injection technology; the downstream carbon dioxide capture and gas-processing equipment; and overall integration of control systems with the power systems.
“We are confident that our proposal will meet the DOE’s goal to demonstrate, at a commercial scale, advanced coal-based, carbon-capture technologies,” said Charles McConnell, Praxair’s vice president for oxy-coal and gasification. “Demonstration projects such as these are fundamental to advancing the technology and know-how necessary to reduce greenhouse gas emissions.”