Carbon dioxide sequestration in foamed controlled low...

Details Carbon dioxide sequestration in foamed controlled low... Carbon dioxide sequestration in foamed controlled low...

B - Operations, Transporting

01

D

B01D 53/62 (2006.01) B01F 3/04 (2006.01) C04B 18/00 (2006.01) C04B 38/00 (2006.01)

Patent

CA 2668249

A process for sequestering carbon dioxide from the exhaust gas emitted from a combustion chamber is disclosed. In the process, a foam including a foaming agent and the exhaust gas is formed, and the foam is added to a mixture including a cementitious material (e.g., cement-kiln dust, lime kiln dust, or slag cement) and water to form a foamed mixture. Thereafter, the foamed mixture is allowed to set, preferably to a controlled low-strength material having a compressive strength of 1200 psi or less. The carbon dioxide in the exhaust gas reacts with hydration products in the controlled low-strength material and in turn sequesters the carbon dioxide.

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