摘要:
A CO 2 recovery device is provided with a CO 2 absorber 13 and an absorbent regenerator 14 that regenerates a CO 2 absorbent (rich solution 12A) that absorbs CO 2 . The CO 2 absorber 13 includes a CO 2 absorbing section 13A in which a CO 2 -containing flue gas 11A that contains CO 2 and a CO 2 absorbent 12 that is a basic amine compound absorbent are brought into contact with each other to remove CO 2 , and an aqueous cleaning section 21 in which a decarbonated flue gas 11B, from which CO 2 is removed in the CO 2 absorbing section 13A, and rinsing water 20 are brought into contact with each other to remove an accompanying substance that accompanies the decarbonated flue gas 11B. A lean solution 12B, from which CO 2 is removed in the regenerator 14, is re-used in the absorber 13. The CO 2 recovery device includes a degassing basin 80 which is interposed in a rich solution supply line L 11 that supplies the rich solution 12A from the CO 2 absorber 13 to the absorbent regenerator 14, and which includes a retaining section 82 configured to remove oxygen in the rich solution 12A.
摘要:
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).
摘要:
A CO 2 recovery device is provided with a CO 2 absorber 13 and an absorbent regenerator 14 that regenerates a CO 2 absorbent (rich solution 12A) that absorbs CO 2 . The CO 2 absorber 13 includes a CO 2 absorbing section 13A in which a CO 2 -containing flue gas 11A that contains CO 2 and a CO 2 absorbent 12 that is a basic amine compound absorbent are brought into contact with each other to remove CO 2 , and an aqueous cleaning section 21 in which a decarbonated flue gas 11B, from which CO 2 is removed in the CO 2 absorbing section 13A, and rinsing water 20 are brought into contact with each other to remove an accompanying substance that accompanies the decarbonated flue gas 11B. A lean solution 12B, from which CO 2 is removed in the regenerator 14, is re-used in the absorber 13. The CO 2 recovery device includes a degassing basin 80 which is interposed in a rich solution supply line L 11 that supplies the rich solution 12A from the CO 2 absorber 13 to the absorbent regenerator 14, and which includes a retaining section 82 configured to remove oxygen in the rich solution 12A.
摘要翻译:CO 2回收装置设置有CO 2吸收器13和吸收再生器14,吸收再生器14再生吸收CO 2的CO 2吸收剂(富溶液12A)。 CO 2吸收器13包括:CO 2吸收部13A,其使含有CO 2的含CO 2废气11A与作为碱性胺系化合物吸收剂的CO 2吸收剂12接触而除去CO 2;以及水溶液清洗部 其中在CO 2吸收部分13A中去除CO 2的脱碳酸化烟气11B与漂洗水20彼此接触以去除伴随脱二氧化碳烟气11B的伴生物质。 在再生器14中从中除去CO 2的贫溶液12B在吸收器13中再利用.CO 2回收装置包括脱气池80,该脱气池插入富溶液供应管线L11中, CO 2吸收器13连接到吸收剂再生器14,并且其包括保持部分82,该保持部分82构造成去除富溶液12A中的氧。
摘要:
Provided are: a CO 2 recovery apparatus such that the total operational efficiency and stability of the apparatus can be improved even when the amount of a gas to be treated varies; and a CO 2 recovery process. This CO 2 recovery apparatus (1) is provided with: a CO 2 absorption tower (14) for bringing exhaust gas (11A) into contact with a CO 2 absorbing liquid (13) and thus making the CO 2 absorbing liquid (13) absorb the CO 2 contained in the exhaust gas (11A); a CO 2 absorbing liquid regeneration tower (15) for heating the CO 2 absorbing liquid (13) with steam and thus releasing CO 2 from the CO 2 absorbing liquid (13) and regenerating the CO 2 absorbing liquid (13); a flowmeter (101) for determining the flow rates of the exhaust gas (11A) introduced into the CO 2 absorption tower (14); and a control unit (102) for classifying the flow rates of the exhaust gas (11A) determined by the flowmeter (101) into multiple flow rate ranges, and controlling the flow rate of the CO 2 absorbing liquid (13) supplied to the CO 2 absorption tower (14) and the flow rate of steam supplied to the CO 2 absorbing liquid regeneration tower (15) on the basis of prescribed set load values which have been previously established in accordance with the multiple flow rate ranges.
摘要:
Provided are a CO 2 recovery unit and a CO 2 recovery method with which it is possible for a CO 2 recovery amount and/or a CO 2 recovery rate to be controlled with high accuracy towards a target value. This CO 2 recovery unit (1) is characterized by being 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 -absorbing solution regenerator (15) which, by heating, regenerates the CO 2 -absorbing solution (13) that has absorbed the CO 2 ; a CO 2 recovery rate control unit which measures the CO 2 concentration in the flue gas (11A) and which, on the basis of the CO 2 concentration in the flue gas discharged from the CO 2 -absorbing solution (13) that has absorbed the CO 2 , changes the absorbing solution circulation amount and the amount of saturated steam (S) that is supplied to a regeneration heater (31); and a CO 2 recovery amount control unit which, in accordance with the CO 2 concentration of the flue gas (11A) and the flue gas flow rate, changes the circulation amount of the CO 2 -absorbing solution (13) and the amount of the saturated steam (S) supplied to the regeneration heater (31).
摘要:
Provided are: a CO 2 recovery apparatus such that the total operational efficiency and stability of the apparatus can be improved even when the amount of a gas to be treated varies; and a CO 2 recovery process. This CO 2 recovery apparatus (1) is provided with: a CO 2 absorption tower (14) for bringing exhaust gas (11A) into contact with a CO 2 absorbing liquid (13) and thus making the CO 2 absorbing liquid (13) absorb the CO 2 contained in the exhaust gas (11A); a CO 2 absorbing liquid regeneration tower (15) for heating the CO 2 absorbing liquid (13) with steam and thus releasing CO 2 from the CO 2 absorbing liquid (13) and regenerating the CO 2 absorbing liquid (13); a flowmeter (101) for determining the flow rates of the exhaust gas (11A) introduced into the CO 2 absorption tower (14); and a control unit (102) for classifying the flow rates of the exhaust gas (11A) determined by the flowmeter (101) into multiple flow rate ranges, and controlling the flow rate of the CO 2 absorbing liquid (13) supplied to the CO 2 absorption tower (14) and the flow rate of steam supplied to the CO 2 absorbing liquid regeneration tower (15) on the basis of prescribed set load values which have been previously established in accordance with the multiple flow rate ranges.
摘要:
When CO 2 gas is absorbed from flue gas 11 containing CO 2 as absorbed gas by using an absorbent 12 circulating in an absorber 13 and an absorbent regenerator 14 in a closed system, a first sampling part X at which a lean solution sample 101 is collected in the vicinity of an inlet for a lean solution supply line L 2 in the absorber 13, a second sampling part Y at which a rich solution sample 102 is collected in the vicinity of an outlet for a rich solution supply line L 1 in the absorber 13, and an analyzing device 103 which analyzes the collected lean solution sample 101 and rich solution sample 102 are provided; the lean solution sample 101 at the first sampling part X and the rich solution sample 102 at the second sampling part Y are collected, respectively, in the same time period, and concentrations of CO 2 gas in the lean solution sample 101 and the rich solution sample 102 are measured, and then the gas absorbing and regenerating operation is controlled based on measured results.