| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a system for separating/recovering carbon dioxide, which can be operated stably. <P>SOLUTION: The system for separating/recovering carbon dioxide includes: an absorption column 3 in which the carbon dioxide included in combustion exhaust gas is absorbed in a liquid absorbent and from which the carbon dioxide-absorbed liquid absorbent is discharged; an exhaust gas introduction line 8 for introducing the combustion exhaust gas into the absorption column 3; a regeneration column 5 to which the carbon dioxide-absorbed liquid absorbent discharged from the absorption column 3 is supplied, in which gaseous carbon dioxide including the vapor of the liquid absorbent is removed from the carbon dioxide-absorbed liquid absorbent to regenerate the liquid absorbent and from which the regenerated liquid absorbent is discharged; a regenerative heat exchanger 7 which is arranged between the absorption column 3 and the regeneration column 5 and used for heating the liquid absorbent, that is discharged from the absorption column 3 and supplied to the regeneration column 5, by using the liquid absorbent discharged from the regeneration column 5 as a heat source; a buffer tank 10 for storing the liquid absorbent which is discharged from the regeneration column 5 and passed through the regenerative heat exchanger 7; a liquid absorbent discharge line 18 one end of which is connected to the absorption column 3 at the position lower than the exhaust gas introduction line 8 and the other end of which is connected to the buffer tank 10; and a pump 16 for sending the liquid absorbent stored in the buffer tank 10 to the adsorption column 3. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
