Integrated carbon dioxide removal and ammonia-soda process

A method for producing sodium carbonate, comprising integrating a carbon dioxide capture process with an ammonia-soda process,

• wherein the carbon dioxide capture process comprises:
• providing a process gas stream containing carbon dioxide;
• removing the carbon dioxide from the process gas stream by bringing the process gas stream into contact with a carbon dioxide-lean ammoniated solution in an absorption unit to allow absorption of the carbon dioxide into the carbon dioxide-lean ammoniated solution to generate a solution enriched with carbon dioxide and a gas stream depleted in carbon dioxide and enriched in ammonia;
• and
• removing the carbon dioxide from the solution enriched with carbon dioxide by desorption in a regeneration unit to generate a carbon dioxide rich gas stream and the carbon dioxide-lean ammoniated solution,
• and the ammonia-soda process comprises:
• forwarding the carbon dioxide rich gas stream from the regeneration unit to a carbonator for reacting the carbon dioxide rich gas stream with an ammoniated brine solution to generate sodium bicarbonate, and converting the sodium bicarbonate to sodium carbonate;
• and
• forwarding a fluid containing ammonia generated in the ammonia-soda process as make-up ammonia to the absorption unit for removing the carbon dioxide from the process gas stream.