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    • 10. 发明专利
    • Production of gaseous carbon dioxide using waste gas containing gaseous carbon dioxide
    • 使用含气体二氧化碳的废气生产气体二氧化碳
    • JPS59164612A
    • 1984-09-17
    • JP4025783
    • 1983-03-11
    • Tokyo Gas Co LtdTokyo Reinetsu Sangyo Kk
    • SUZUKI KAZUNARIHIRANO TADASHI
    • B01D53/62B01D53/34C01B32/50F25J1/02F25J3/02
    • F25J3/0266F25J2205/40F25J2205/50F25J2210/62F25J2210/70F25J2270/904Y02C10/04Y02C10/12
    • PURPOSE: To separate and recover high purity CO
      2 from waste gas contg. CO
      2 by absorbing and capturing the CO
      2 in an absorbing liq. cooled to an extremely low temp. with liquefied natural gas.
      CONSTITUTION: Waste gas 19 contg. CO
      2 such as combustion gas is cooled with sea water 21 in a precooler 20, passed through a dehydration tower 22 and a deodorization tower 6, introduced into a heat exchanger 1, and cooled to about -80°C. The cooled gas is fed to an absorption tower 2 provided with a cooler 3 contg. "Freon" cooled to -120°C with LNG13, and the gas is brought into contact with a spray of ethanol cooled to -80°C. Most of the CO
      2 in the waste gas is captured by absorption and separated from the waste gas. The ethanol contg. absorbed CO
      2 is fed to a stripper 5, and the CO
      2 is released by heating the ethanol with the heat of waste gas passing through the stripper 5. The released CO
      2 is liquefied with a liquefier 7 and stored in a tank 8 as liquefied CO
      2 .
      COPYRIGHT: (C)1984,JPO&Japio
    • 目的:从废气中分离和回收高纯度二氧化碳。 通过吸收和捕获二氧化碳在吸收液体中的二氧化碳。 冷却至极低温 与液化天然气。 构成:废气19 CO 2如燃烧气体用预冷器20中的海水21冷却,通过引入热交换器1的脱水塔22和除臭塔6,并冷却至约-80℃。 冷却的气体被供给到设置有冷却器3的吸收塔2。 “氟利昂”用LNG13冷却至-120℃,气体与冷却至-80℃的乙醇喷雾接触。 废气中的大部分二氧化碳被吸收并与废气分离。 乙醇 吸收的CO 2被供给到汽提器5中,并且通过用通过汽提器5的废气的热量加热乙醇来释放CO 2。释放的CO 2用液化器7液化并以液化CO 2的形式储存在罐8中。