Abstract: The present invention relates to an method for producing sodium carbonate by integration of a carbon dioxide capture process with an ammonia-soda process. The present invention moreover relates to a plant for producing sodium carbonate comprising a carbon dioxide capture system and an ammonia-soda system. Uses of fluid streams generated in a carbon dioxide capture process in an ammonia-soda process is moreover disclosed.

Abstract: A chilled ammonia capture system for capturing carbon dioxide from a flue gas stream comprises a first absorber and a second absorber. The first absorber operates at a temperature of about 25 to about 50 degrees Celsius. The operating temperature permits the use of a lower circulation rate, which leads to smaller diameter vessels and to fewer recirculation pumps, which in turn leads to lower operating and maintenance costs.

Abstract: The present invention relates to an method for producing sodium carbonate by integration of a carbon dioxide capture process with an ammonia-soda process. The present invention moreover relates to a plant for producing sodium carbonate comprising a carbon dioxide capture system and an ammonia-soda system. Uses of fluid streams generated in a carbon dioxide capture process in an ammonia-soda process is moreover disclosed.

Abstract: The present invention relates to a method and system for cleaning a process gas containing carbon dioxide and contaminants, by bringing the process gas into direct contact with an alkaline solution or slurry, and capturing in the alkaline solution or slurry at least a part of the contaminants of the process gas; and bringing the process gas, depleted in contaminants, into direct contact with a cooling liquid to form a cooled process gas; wherein said alkaline solution or slurry is separate from the cooling liquid.

Abstract: A system for capturing CO2 from a flue gas stream includes a CO2 absorber having first and second absorption stages. A first contacting means is provided for contacting, in the first stage, the flue gas stream (FG) with a mixture of CO2-lean ammoniated solution and recirculated CO2-enriched ammoniated solution. A second contacting means is provided for contacting, in the second stage, partly cleaned flue gas stream with the recirculated CO2-enriched solution. A device collects the mixture of CO2-lean solution and recirculated CO2-enriched solution. A pipe passes a first portion of the collected CO2-enriched solution for regeneration. A CO2-lean solution pipe passes the CO2-lean solution from regeneration to the first stage. A recirculation pipe passes a second portion of the collected CO2-enriched solution to the second stage.

Abstract: A chilled ammonia capture system for capturing carbon dioxide from a flue gas stream comprises a first absorber and a second absorber. The first absorber operates at a temperature of about 25 to about 50 degrees Celsius. The operating temperature permits the use of a lower circulation rate, which leads to smaller diameter vessels and to fewer recirculation pumps, which in turn leads to lower operating and maintenance costs.