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    • 9. 发明公开
    • CO2 RECOVERY DEVICE AND CO2 RECOVERY METHOD
    • CO2-RÜCKGEWINNUNGSVORRICHUNGUND CO2-RÜCKGEWINNUNGSVERFAHREN
    • EP3150270A4
    • 2017-06-14
    • EP15818919
    • 2015-06-19
    • MITSUBISHI HEAVY IND LTD
    • NAKAGAWA YOSUKESHIMADA DAISUKETSUJIUCHI TATSUYA
    • B01D53/14B01D53/62B01D53/78C01B32/50F23J15/04
    • B01D53/1412B01D53/1425B01D53/1475B01D53/18B01D53/346B01D53/62B01D53/78B01D2252/20478B01D2256/22B01D2258/0283C01B31/20F23J15/04F23J2215/50F23J2219/40Y02A50/2342Y02C10/04Y02C10/06Y02E20/326
    • Provided are a CO 2 recovery unit and a CO 2 recovery method which enable stable operation to continue even if an operation condition has changed. This CO 2 recovery unit (1) is equipped with: a CO 2 -absorber (14) that causes CO 2 included in flue gas (11A) to be absorbed into a CO 2 -absorbing solution (13); a CO 2 -regenerator (15) which regenerates the CO 2 -absorbing solution (13) by heating; and a CO 2 recovery amount control unit (111) which calculates a computed target value for the CO 2 recovery amount and a computed target value for the CO 2 recovery rate on the basis of a set value for the CO 2 recovery rate, actual measured values of the CO 2 concentration, gas flow rate, and temperature of the flue gas (11A), and maximum values for the CO 2 recovery amounts in the CO 2 -absorber (14) and the CO 2 -regenerator (15). On the basis of the set value for the CO 2 recovery rate or the computed target value for the CO 2 recovery rate, the CO 2 recovery amount control unit (111) controls: the amount of the CO 2 -absorbing solution (13) supplied to the CO 2 -absorber (14); the amount of the CO 2 -absorbing solution (13) supplied to the CO 2 -regenerator (15); and the amount of saturated steam (S) supplied to a regeneration heater (31) of the CO 2 -regenerator (15).
    • 本发明提供一种即使运转条件发生变化也能够稳定运转的CO 2回收装置以及CO 2回收方法。 该CO 2回收单元(1)具备:CO 2吸收剂(14),其使包含在废气(11A)中的CO 2吸收到CO 2吸收溶液(13)中。 通过加热使CO 2吸收溶液(13)再生的CO 2再生器(15) 和CO 2回收量控制部(111),其基于CO 2回收率的设定值,计算关于CO 2回收量的运算目标值和运算出的CO 2回收率目标值,实测 CO 2浓度,气体流量和烟气温度(11A)的值,以及CO 2吸收器(14)和CO 2再生器(15)中的CO 2回收量的最大值。 CO 2回收量控制部(111)基于CO 2回收率的设定值或CO 2回收率的目标值,控制供给的CO 2吸收液(13)的量 到CO 2吸收器(14); 供应给二氧化碳再生器(15)的二氧化碳吸收溶液(13)的量; 和供应给二氧化碳再生器(15)的再生加热器(31)的饱和蒸汽(S)的量。