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    • 5. 发明专利
    • Co2 capture system by chemical absorption
    • 通过化学吸收的CO2捕获系统
    • JP2013139013A
    • 2013-07-18
    • JP2012000960
    • 2012-01-06
    • Babcock Hitachi Kkバブコック日立株式会社
    • HOKARI NOBUYUKIORITA HISAYUKIMUKAIDE MASAAKISHIMAMURA JUNYOKOYAMA KOICHIYOSHIDA NORIKO
    • B01D53/62B01D53/14C01B32/50
    • B01D53/62B01D53/1425B01D53/1475B01D2258/0283Y02A50/2342Y02C10/04Y02C10/06
    • PROBLEM TO BE SOLVED: To reduce regeneration energy charged into a regeneration tower from the outside and to improve the energy efficiency of a COcapture system by chemical absorption by reducing the cooling waste heat of the gas cooling of exhaust gas.SOLUTION: The COcapture system by chemical absorption includes an absorber for absorbing COby a solvent and a regenerator which heats the CO-absorbed absorption liquid to discharge the CO, and also includes a gas discharge system which discharges the gas released from the absorption liquid in the regenerator to the outside, a gas compressor installed downstream of the gas discharge system, a heat exchanger installed downstream of the gas compressor and exchanging heat between the compressed gas and a rich liquid to be sent to the regenerator, a gas-liquid separator installed downstream of the heat exchanger and separating the gas and condensed water, a condensed water supply system supplying the condensed water from the gas-liquid separator to the regenerator, another gas discharge system discharging the gas containing high concentration COfrom the gas-liquid separator, and a compressor installed downstream of the gas-liquid separator in the another gas discharge system and pressurizing the gas containing high concentration CO.
    • 要解决的问题:通过减少排气气体冷却的冷却废热,通过化学吸收来减少从外部进入再生塔的再生能量并提高CO捕集系统的能量效率。解决方案:CO捕集系统由 化学吸收包括用于吸收溶剂中的CO的吸收剂和加热CO吸收的吸收液体以排出CO的再生器,并且还包括将从再生器中的吸收液体释放的气体排出到外部的气体排出系统, 安装在排气系统下游的气体压缩机,安装在气体压缩机下游的热交换器,并且将压缩气体与要送往再生器的富液体之间的热交换,安装在热交换器下游的气液分离器, 气体和冷凝水,从气液分离器供应冷凝水的冷凝水供应系统 在再生器的另一个气体放电系统中,从气液分离器排出含有高浓度CO的气体的另一个气体放电系统,以及安装在另一气体放电系统中的气液分离器下游的压缩机,并对含有高浓度CO的气体加压。
    • 9. 发明专利
    • Carbon dioxide chemical absorption system
    • 二氧化碳吸收系统
    • JP2013208532A
    • 2013-10-10
    • JP2012079851
    • 2012-03-30
    • Babcock Hitachi Kkバブコック日立株式会社
    • HOKARI NOBUYUKIORITA HISAYUKIMUKAIDE MASAAKISHIMAMURA JUNYOKOYAMA KOICHIYOSHIDA NORIKO
    • B01D53/14B01D53/34B01D53/62C01B32/50
    • Y02A50/2342Y02C10/06Y02P20/152
    • PROBLEM TO BE SOLVED: To stably operate a decompression evaporator and a compression part which are components in a carbon dioxide chemical absorption system to which a vapor recompression (VR) method is applied.SOLUTION: In a carbon dioxide chemical absorption system, a vapor recompression part is provided with a decompression evaporator 20 for decompressing/evaporating lean liquid extracted from a regeneration tower 2 via a regeneration tower bottom pipe 19, a compression part 22 for pressurizing vapor generated by the decompression evaporator 20, and a recompression vapor pipe (VR vapor pipe 23) for putting the vapor pressurized by the compression part 22 into the regeneration tower 2. A lean liquid pipe 26 for evaporation which transports lean liquid from the regeneration tower 2 to the decompression evaporator 20 is provided with a flow rate adjustment valve CV1, and the decompression evaporator 20 is provided with a pressure gauge P1 for measuring the pressure inside the decompression evaporator 20. An opening degree of the flow rate adjustment valve CV1 or input of the compression part 22 is controlled so that a measurement value of the pressure gauge P1 becomes constant.
    • 要解决的问题:稳定地运行作为二氧化碳化学吸收系统中应用了蒸气压缩(VR)方法的组分的减压蒸发器和压缩部件。解决方案:在二氧化碳化学吸收系统中,蒸气重新压缩 部分设置有减压蒸发器20,用于通过再生塔底管19从再生塔2抽取的贫液稀释/蒸发,用于对由减压蒸发器20产生的蒸汽加压的压缩部22和再压缩蒸气管 用于将由压缩部22加压的蒸汽输送到再生塔2中的蒸气管23将用于将稀薄液体从再生塔2输送至减压蒸发器20的用于蒸发的贫液管26设置有流量调节阀CV1, 并且减压蒸发器20设置有用于测量分解内的压力的压力计P1 控制流量调节阀CV1的开度或压缩部22的输入,使得压力表P1的测量值恒定。