Device For Capturing Acidic Gas

摘要

The present invention relates to a device for capturing acid gas which is capable of reducing an used amount of heat energy. According to an embodiment of the present invention, the device for capturing acid gas comprises: an absorption tower including an absorbent therein to absorb acid gas of synthesis gas; a stripper for receiving the absorbent from the absorption tower and steaming the absorbent to separate carbon dioxide therefrom; a first heat exchanger for exchanging heat between branch current which composes a part of an absorbent discharged from the absorption tower and an absorbent discharged from the bottom of the stripper; and a second heat exchanger for exchanging heat between main current which composes the remaining of the absorbent discharged from the absorption tower and an absorbent having passed through the first heat exchanger.