CARBON DIOXIDE RECOVERY SYSTEM AND OPERATING METHOD THEREOF

摘要

A carbon dioxide recovery system includes an absorption tower in which carbon dioxide is absorbed into an absorbing solution then the absorbing solution is output to a regeneration tower in which carbon dioxide is released from the absorbing solution. The regeneration tower outputs the absorbing solution from which carbon dioxide has been released and an exhaust gas included released carbon dioxide and water vapor. In a condensing section the exhaust gas is separated into dioxide gas stream and a condensed water stream. In a mixing section the condensed water is mixed with an amine to a replenishment amine aqueous solution in which the amine is dissolved in the condensed water. In a replenishment section the absorbing solution is mixed with the replenishment amine aqueous solution.

主权项

1. A carbon dioxide recovery system, comprising:
an absorption tower in which an absorbing solution absorbs carbon dioxide, the absorption tower outputting the absorbing solution which has absorbed carbon dioxide; a regeneration tower in which the absorbing solution output from the absorption tower releases carbon dioxide, the regeneration tower outputting the absorbing solution, from which carbon dioxide has been released, and a regeneration tower exhaust gas, which includes carbon dioxide and water vapor; a condensing section that condenses water vapor in the regeneration tower exhaust gas and outputs a gas stream and a condensed water stream; a mixing section that mixes water from the condensed water stream and an amine component to produce a replenishment amine aqueous solution in which the amine component is dissolved; and a replenishment section in which the replenishment amine aqueous solution mixes with the absorbing solution.