Abstract: A system for removing carbon dioxide from a flue gas stream is provided, the system comprising an absorber vessel configured to receive a flue gas stream, the absorber vessel comprising a first absorption stage configured to receive the flue gas stream and contact it with a first ionic solution, a second absorption stage configured to receive flue gas which has passed the first absorption stage and contact it with a second ionic solution, a first sump vessel, and a second sump vessel.

Abstract: A system for removal of carbon dioxide from a process gas includes an absorption arrangement arranged to allow contact between the process gas and an ammoniated solution within the absorption arrangement such that at least a part of the carbon dioxide of the process gas is captured by the ammoniated solution. The absorption arrangement is arranged to, with regard to the ammoniated solution, only accommodate ammoniated solution without solids. A first heat exchanger is arranged to cool the ammoniated solution including captured carbon dioxide after it has exited the absorption arrangement. A separator is arranged to remove at least a part of any solids in the cooled ammoniated solution. A second heat exchanger is arranged to heat the ammoniated solution after it has exited the separator and returned to the absorption arrangement.

Abstract: Systems and processes for treating a flue gas for removing sulfur oxides (SOx) entrained in the flue gas generally includes contacting the gas stream with an aqueous alkali and/or alkaline earth metal hydroxide solution such as sodium hydroxide and reacting SOx entrained in the gas stream to form an aqueous alkali and/or alkaline earth metal sulfur-containing salt solution such as sodium sulfate. The aqueous alkali and/or alkaline earth metal sulfur-containing salt solution can be introduced into an electrodialysis apparatus configured to electrolyze water to form hydrogen and hydroxyl ions that selectively combine with alkali and/or alkaline earth metal ions and sulfur containing ions from the aqueous alkali and/or alkaline earth metal sulfur containing salt feedstream to form a regenerated alkali and/or alkaline earth metal hydroxide feedstream and an acid containing feedstream.

Abstract: Disclosed is a method of removing carbon dioxide from a process gas, the method comprising: contacting an ammoniated solution with the process gas in an absorption arrangement 101, the ammoniated solution capturing at least a part of the carbon dioxide of the process gas, wherein the molar ratio, R, of ammonia to carbon dioxide in the ammoniated solution is controlled such that substantially no precipitation of solids occurs within the absorption arrangement 101; allowing ammoniated solution including captured carbon dioxide to exit the absorption arrangement 101; cooling the ammoniated solution that has exited the absorption arrangement, wherein at least a part of the captured carbon dioxide is precipitated as solid salt; separating at least a part of the precipitated salt from the ammoniated solution; heating the ammoniated solution from which the at least a part of the precipitated salt has been separated, such that substantially no solids are present in the heated ammoniated solution; and allowing the hea

Abstract: A system for reducing the power required to cool a combustion gas for cleaning and a method for performing the same are disclosed. The system includes an expander for producing power. Energy in the form of heat is transferred from the combustion gas to a working fluid. The working fluid drives the expander to generate at least a portion of the power required for performing to drive a compressor in a refrigeration system. After the combustion gas transfers energy the combustion gas is cooled with the refrigeration system. In some embodiments the expander and the compressor are arranged along a common shaft.

Abstract: A system for removing carbon dioxide from a flue gas stream is provided, the system comprising an absorber vessel configured to receive a flue gas stream, the absorber vessel comprising a first absorption stage configured to receive the flue gas stream and contact it with a first ionic solution, a second absorption stage configured to receive flue gas which has passed the first absorption stage and contact it with a second ionic solution, a first sump vessel, and a second sump vessel.

Abstract: A system and process for utilizing energy generated within a flue gas processing system (100). The process includes subjecting a carbon dioxide loaded solution (142) to pressure in a regeneration system (136), thereby removing carbon dioxide from the carbon dioxide loaded solution (142) and generating a high pressure carbon dioxide stream (138). At least a portion of the high pressure carbon dioxide stream (138) is introduced to an expansion turbine (160), thereby generating energy (164). The energy (164) is utilized to generate power (168).

Abstract: Disclosed is a method of removing carbon dioxide from a process gas, the method comprising: contacting an ammoniated solution with the process gas in an absorption arrangement 101, the ammoniated solution capturing at least a part of the carbon dioxide of the process gas, wherein the molar ratio, R, of ammonia to carbon dioxide in the ammoniated solution is controlled such that substantially no precipitation of solids occurs within the absorption arrangement 101; allowing ammoniated solution including captured carbon dioxide to exit the absorption arrangement 101; cooling the ammoniated solution that has exited the absorption arrangement, wherein at least a part of the captured carbon dioxide is precipitated as solid salt; separating at least a part of the precipitated salt from the ammoniated solution; heating the ammoniated solution from which the at least a part of the precipitated salt has been separated, such that substantially no solids are present in the heated ammoniated solution; and allowing the hea