摘要:
A CO2 recovery system according to the present invention includes: a CO 2 absorber (16) that brings a cooled CO 2 -containing exhaust gas (12) into contact with a CO 2 -absorbent (15) that absorbs CO 2 , thereby removing the CO 2 from the exhaust gas (12); an absorbent regenerator (18) that releases CO 2 from a CO 2 -absorbent that has absorbed CO 2 (rich solution) (17), thereby regenerating the absorbent (15); and a lean solution temperature-reduction unit (50) that recovers heat from a lean solution (15) discharged from the absorbent regenerator (18).
摘要:
In a reclaiming apparatus (106) that includes an airtight container (106a) as an absorbent storing unit that stores a part of an absorbent that absorbs CO 2 included in an exhaust gas and a heating unit that heats the absorbent stored in the airtight container (106a), a part of the absorbent stored in the airtight container (106a) is distributed, and a gaseous body is brought into counterflow contact with the absorbent that is distributed. As a result, since the gaseous body is brought into counterflow contact with a part of the absorbent stored in the absorbent storing unit, an absorbent component volatilizes and is separated from a degraded material, and the absorbent component can be extracted from the degraded material, whereby a loss of the absorbent can be reduced.
摘要:
The CO 2 recovery apparatus is provided with a CO 2 absorption portion 13A for absorbing CO 2 in a CO 2 -containing exhaust gas 11A by a CO 2 absorbing liquid 12, a water washing portion 13B provided on the upper portion side of the CO 2 absorption portion 13A so as to cool a CO 2 -removed exhaust gas and also recover the accompanying CO 2 absorbing liquid 12, a washing liquid circulation line L 1 for directly circulating a washing liquid 20 containing the CO 2 absorbing liquid 12 recovered in the water washing portion 13B from the top of the water washing portion 13B, an extraction line L 2 for extracting part of the washing liquid 20 containing the CO 2 absorbing liquid 12 as an extracted liquid 21 from the washing liquid circulation line L 1 , a concentration portion 22 for separating a gas component (water vapor) 24 from the extracted liquid 21 while concentrating the CO 2 absorbing liquid, and a concentrated liquid feed line L 3 for feeding a concentrated liquid 23 concentrated in the concentration portion 22 to the side of an absorbing liquid regeneration tower 14.
摘要:
A CO 2 recovery device includes: a CO 2 absorption unit (13A) for absorbing CO 2 , which is contained in a CO 2 -containing flue gas (11A), by a CO 2 absorbent (12); a washing unit (13B) for cooling a CO 2 -removed flue gas (11B) and recovering the accompanying CO 2 absorbent (12); a circulation line (L 1 ) for directly circulating wash water (20) from the top portion of the washing unit (13B); an extraction line (L 2 ) for extracting a part of the wash water (20) containing the CO 2 absorbent (12) as an extracted fluid (21); a first gas-liquid separation unit (22A) for separating a gas component (24) from the extracted fluid (21); a concentration unit (22B) for concentrating the CO 2 absorbent (12) contained in the extracted fluid (21) and separating the gas component (24); a concentrated fluid return line (L 3 ) through which a concentrated fluid (23), which is the concentrated CO 2 absorbent (12), returns to the CO 2 absorption unit (13A) provided below the washing unit (13B); and a gas inlet line (L 4 ) through which the separated gas component (24) is introduced into an absorber (13).
摘要:
A CO 2 recovery system according to the present invention includes: a cooling tower (14) that uses cooling water (13) to cool a CO 2 -containing exhaust gas (12) discharged from industrial equipment such as a boiler (11) or a gas turbine; a CO 2 absorber (16) that brings the cooled CO 2 -containing exhaust gas (12) into contact with a CO 2 -absorbent (15) that absorbs CO 2 , thereby removing the CO 2 from the exhaust gas (12); and a first absorbent regenerator (18-1) and a second absorbent regenerator (18-2) that release CO 2 from a CO 2 -absorbent that has absorbed CO 2 (rich solution) (17), thereby regenerating the CO 2 -absorbent (15). A second lean solution at the outlet of the second absorbent regenerator is subjected to vacuum flash vaporization, and the resulting vapor is inputted to the first absorbent regenerator.
摘要:
A CO 2 recovery apparatus according to the present invention includes: an absorber (1003) that brings CO 2 -containing flue gas (1001A) into counter-current contact with CO 2 absorbent (1002) to reduce CO 2 , and a regenerator (1005) that regenerates rich solution (1004) that has absorbed CO 2 , in which lean solution (1006) having CO 2 reduced in the regenerator (1005) is reused in the absorber (1003). The absorber (1003) further includes a CO 2 absorbing unit (1010) that recovers CO 2 contained in the flue gas (1001A), and the CO 2 absorbent (1002) that has absorbed CO 2 is extracted from a rich side of the CO 2 absorbing unit (1010) to exterior, cooled, and then supplied to a position nearer to a lean side of the absorber (1003) with respect to the position at which the CO 2 absorbent (1002) is extracted.
摘要:
A first amine, which is a straight chain secondary monoamine, 2) a second amine, which is a cyclic secondary polyamine as a reaction accelerator, and 3) a third amine, which is an amine consisting of one selected from a cyclic amine group constituted from a secondary or tertiary amino group or a straight chain amine group with high steric hindrance are mixed to obtain an absorbent. By the synergistic effect thereof, absorption properties to CO 2 and/or H 2 S are excellent and the absorbed CO 2 or H 2 S emission properties during the regeneration of the absorbent become excellent. Therefore, the water vapor amount used during the regeneration of the absorbent in CO 2 recovery equipment can be reduced.
摘要:
A CO 2 recovery unit includes an absorber that reduces CO 2 in flue gas (101) discharged from a combustion facility (50) by absorbing CO 2 by an absorbent, a regenerator that heats the absorbent having absorbed CO 2 to emit CO 2 , and regenerates and supplies the absorbent to the absorber, and a regenerating heater that uses steam (106) supplied from the combustion facility (50) for heating the absorbent in the regenerator and returns heated condensed water (106a) to the combustion facility (50). The CO 2 recovery unit further includes a condensed water/flue gas heat exchanger (57) that heats the condensed water (106a) to be returned from the regenerating heater to the combustion facility (50) by heat-exchanging the condensed water (106a) with the flue gas (101) in a flue gas duct (51) in the combustion facility (50).