Post Combustion CO2 Capture ProjectThis type of technology applies to the majority of existing coal-fired plants on the planet that burn coal as a solid fuel. If widely deployed in the future, it could have a high impact on CO2 reduction globally.
New generation coal plants use gasification process to produce syngas which can be used as a fuel at that point, or undergo a CO2 Separation process such that the subsequent gas fuel is hydrogen, resulting in "zero" emission if the CO2 is sequestrated.
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Powerspan Setup Post Combustion CO2 Capture Demonstration Project North Dakota
spacedaily.com
by Staff Writers
Bismarck ND (SPX) Mar 14, 2008
Basin Electric Power Cooperative and Powerspan have announced the selection of Powerspan's carbon dioxide (CO2) capture technology for a commercial demonstration at Basin Electric's coal-based electrical generation facility, the Antelope Valley Station located near Beulah, North Dakota. Approximately one million tons of CO2 will be captured annually from the 120 megawatt slipstream project, making this demonstration among the largest in the world.
Powerspan's CO2 capture process, called "ECO2," is a post-combustion, regenerative process, which uses an ammonia-based solution to capture CO2 from the flue gas of a power plant and release it in a form that is ready for further compression, safe transportation, and geological storage.
"Basin Electric has a diverse energy portfolio and
runs extremely clean coal-based plants. However, we're
ready to move to the next level. That's why we are exploring a project that could lead to commercialization of carbon capture technology for existing coal-based generation facilities," says Ron Harper, Basin Electric CEO and general manager.
"The
greatest reductions in CO2 emissions from the power sector can be achieved by developing and proving a technology that can be retrofitted to the hundreds of existing coal-based power plants in the U.S. This is an important first step to achieving that goal."
The CO2 capture takes place after the nitrogen oxides (NOx), sulfur dioxide (SO2), mercury and fine particulate matter are captured. Once the CO2 is captured, the ammonia-based solution is regenerated to release CO2 and ammonia. The ammonia is recovered and sent back to the scrubbing process, and the CO2 is in a form that is ready for geological storage.
Ammonia is not consumed in the scrubbing process, and no separate by-product is created.
Full story:
https://www.spacedaily.com/reports/Powerspan_To_Demonstrate_Carbon_Capture_Technology_At_Antelope_Valley_Station_999.html