ENERGY-SAVING ACIDIC GAS CAPTURE SYSTEM AND METHOD USING CONDENSED WATER

摘要

The present invention relates to: a system capable of reducing the quantity of heat, which should be supplied to a regenerator for regenerating an absorbent, in a system for capturing acidic gas including carbon dioxide; and a method thereof. Provided are an acidic gas capture system and an acidic gas capture method, capable of reducing energy consumption by utilizing the heat of a system itself in the acidic gas capture system. The system and the method of the present invention have effects of: lowering the cooling capacity of a condenser by preheating condensed water by heat-exchanging the condensed water having a low temperature, which is generated in the capture system, with a treated gas having a high temperature; or lowering the quantity of heat required for a reboiler by allowing the condensed water having a low temperature to flow into a regenerator in a preheated state. In addition, the condensed water having a low temperature can be optionally used for cooling a dilute solution or a scrubber located at the upper end of the absorber.