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Abstract

A method comprising the steps of:

a) capturing carbon dioxide in a carbon dioxide absorption unit using a carbon dioxide absorption solution;b) feeding the carbon dioxide absorption solution comprising absorbed carbon dioxide and generated in step a) to the high-pressure regenerator of a heat exchange system comprising the high-pressure regenerator and a steam-fired reboiler; andc) supplying low-pressure steam at a pressure ranging from 3.2 to 3.5 kg/cm2 to the steam-fired reboiler for supplying heat to the high-pressure regenerator wherein, the carbon dioxide absorption solution is heated, thereby producing a steam condensate and a regenerated carbon dioxide absorption solution;characterized in that the method further comprises the step of:d) directly supplying the steam condensate produced in step c) to a de-aerator, thereby producing an aqueous solution suitable for producing steam with an oxygen content lower than 20 ppb.

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First Claim