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    • 3. 发明专利
    • Method and apparatus for removing carbon dioxide and hydrogen sulfide
    • 二氧化碳和硫化氢的方法和装置
    • JP2010120013A
    • 2010-06-03
    • JP2009241958
    • 2009-10-21
    • Hitachi Ltd株式会社日立製作所
    • AKIYAMA TOMOKO
    • B01D53/14B01D53/50B01D53/52B01D53/77B01J20/02C01B32/50
    • B01D53/1406B01D53/02B01D53/1425B01D53/1462B01D2251/102B01D2253/112B01D2255/20707B01D2255/20769B01D2256/24B01D2257/302B01D2259/80C01B17/0408C01B17/167C10L3/10C10L3/102Y02C10/04Y02C10/06Y02P20/152
    • PROBLEM TO BE SOLVED: To provide a method and an apparatus for removing acid materials with limited energy consumption in the a purifying process. SOLUTION: A gas to be treated 21 including carbon dioxide and hydrogen sulfide is led to the first absorbing column 1, and carbon dioxide and hydrogen sulfide are removed by contacting with an absorbing liquid in it. Then, the gas to be treated 21 is led into the second absorbing column 2, and the remaining carbon dioxide and hydrogen sulfide are removed by contacting with the absorbing liquid in it. The absorbing liquid 25 which has absorbed carbon dioxide and hydrogen sulfide in the first and the second absorbing columns 1 and 2 is led to a flash tank 4 where an internal pressure is kept lower than that in these absorbing columns 1 and 2, a part of carbon dioxide and hydrogen sulfide is released, a part is cooled and led to the second absorbing column 2, and the remaining part is led to a regenerating column 5 to be heated to release the remaining carbon dioxide and hydrogen sulfide. The part of the absorbing liquid led to the regenerating column 5 is cooled and led to the first absorbing column 1, the rest is cooled and led to the second absorbing column 2 from the position near to the column top part, and it is contacted with the gas to be treated in the second absorbing column 2 again. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种在净化过程中以有限的能量消耗去除酸性物质的方法和装置。 解决方案:将包含二氧化碳和硫化氢的待处理气体21导入第一吸收塔1,并通过与其中的吸收液体接触除去二氧化碳和硫化氢。 然后,待处理气体21被引入第二吸收塔2,并且通过与其中的吸收液体接触来除去剩余的二氧化碳和硫化氢。 在第一吸收塔1和第二吸收塔2中吸收二氧化碳和硫化氢的吸收液25被引导到闪蒸罐4,其中内部压力保持低于这些吸收塔1和2中的一部分, 释放二氧化碳和硫化氢,将一部分冷却并导入第二吸收塔2,将剩余部分引入再生塔5以加热以释放剩余的二氧化碳和硫化氢。 导致再生塔5的吸收液的一部分被冷却并被引导到第一吸收塔1,其余部分被冷却并从靠近塔顶部的位置引导到第二吸收塔2,并与 再次在第二吸收塔2中处理的气体。 版权所有(C)2010,JPO&INPIT