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    • 4. 发明专利
    • Method for removing mercury using distillation column
    • 使用蒸馏塔去除汞的方法
    • JP2005220175A
    • 2005-08-18
    • JP2004027192
    • 2004-02-03
    • Japan Petroleum Exploration Co Ltd石油資源開発株式会社
    • YAMAGUCHI KIYOSHICHAGI KAZUHISAKAKU SENICHIRO
    • B01D3/00C10G7/00C10G7/08C10G29/00C10G31/00
    • C10G31/00C10G7/00C10G7/08C10G2300/205
    • PROBLEM TO BE SOLVED: To produce a product liquid P having controlled fluctuation of properties by efficiently removing mercury from a liquid hydrocarbon L by properly controlling the overhead temperature T
      1 and the bottom temperature T
      2 of a distillation column 1.
      SOLUTION: The method for removing mercury using a distillation column comprises returning gas cooled by a condenser 5 to the overhead of the distillation column 1, making the overhead temperature T
      1 to the liquefaction temperature of light fraction or below, heating the bottom by a return flow from a reboiler 3 and keeping the bottom temperature T
      2 at 300°C or below. When the liquid hydrocarbon L is brought into contact with stripping gas G in countercurrent in the distillation column 1 having a temperature gradient dropping temperature toward the overhead, mercury is efficiently transferred from a liquid phase to a vapor phase without bringing a light fraction in exhaust gas.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:通过适当地控制塔顶温度T 1 和底部温度T 2 。解决方案:使用蒸馏塔除去汞的方法包括将由冷凝器5冷却的气体返回到蒸馏塔1的塔顶馏出物,使塔顶温度T 1 到轻馏分或更低级别的液化温度,通过来自再沸器3的回流加热底部,并将塔底温度T 2 保持在300℃或更低。 当液体烃L在具有向塔顶馏出物的温度梯度下降温度的蒸馏塔1中逆流地与汽提气体G接触时,水银从液相被有效地转移到气相,而不会使废气中的轻馏分 。 版权所有(C)2005,JPO&NCIPI