| 摘要 |
PROBLEM TO BE SOLVED: To recover efficiently heat energy necessary for regeneration of an absorbent.SOLUTION: A carbon dioxide recovery apparatus 100 comprises an absorption portion 120, a heating portion 134 heating a rich absorbent R and preparing a gas-liquid mixed fluid comprising the absorbent, carbon dioxide and water vapor, a first gas-liquid separation portion 140 separating the gas-liquid mixed fluid into the absorbent and a recovery gas X, a passage line 210 through which the recovery gas X passes, a compression portion 220 compressing the recovery gas X, a first heat exchange portion 320 recovering heat generated in compression of the recovery gas X and heating the rich absorbent R before heating by the heating portion 134, a second gas-liquid separation portion 230 separating, from the recovery gas X, water condensed owing to heat recovery by the first heat exchange portion 320 and a second heat exchange portion 310 recovering heat of the recovery gas X separated by the second gas-liquid separation portion 320 and heating the rich absorbent R before heating by the first heat exchange portion 320. |
