CO2 RECOVERY UNIT AND CO2 RECOVERY METHOD

摘要

A CO2 recovery unit and a CO2 recovery method capable of having an excellent CO2 absorption rate and saving energy are provided. A CO2 recovery unit of the invention includes: a CO2 absorber which includes an upper CO2 absorption unit obtaining a CO2 absorbent by causing a flue gas containing CO2 to contact a CO2 absorbent and a lower CO2 absorption unit obtaining a CO2 absorbent by causing the CO2 absorbent to contact a flue gas containing CO2; a CO2 absorbent regenerator which obtains the CO2 absorbent by heating the CO2 absorbent a thermometer which measures a temperature of the CO2 absorbent supplied from the CO2 absorber to the CO2 absorbent regenerator; and a control device which controls a temperature of the CO2 absorbent supplied to the lower CO2 absorption unit based on the temperature of the CO2 absorbent measured by the thermometer.

主权项

1. A CO2 recovery unit comprising:
a CO2 absorber which includes a first CO2 absorption unit obtaining a first CO2 absorbent by causing a CO2 containing gas to be treated to contact a CO2 absorbent so that CO2 contained in the gas to be treated is absorbed to the CO2 absorbent and a second CO2 absorption unit obtaining a second CO2 absorbent by causing the first CO2 absorbent to contact a CO2 containing gas to be treated so that CO2 contained in the gas to be treated is absorbed to the first CO2 absorbent; a CO2 absorbent regenerator which regenerates a CO2 absorbent by heating the second CO2 absorbent so that CO2 is discharged from the second CO2 absorbent; a temperature measurement device which measures a temperature of the second CO2 absorbent supplied from the CO2 absorber to the CO2 absorbent regenerator; and a control device which controls a temperature of the first CO2 absorbent supplied to the second CO2 absorption unit based on the temperature of the second CO2 absorbent measured by the temperature measurement device.