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    Flue gas desulfurization with ammonium sulfite-bisulfite solution
    3.
    发明授权
    Flue gas desulfurization with ammonium sulfite-bisulfite solution 失效
    烟气脱硫与亚硫酸氢亚硫酸氢盐溶液

    公开(公告)号：US3880983A

    公开(公告)日：1975-04-29

    申请号：US20050971

    申请日：1971-11-19

    申请人： EXXON RESEARCH ENGINEERING CO

    发明人： WELTY JR ALBERT B ,  GRIFFIN JR LINDSAY I

    IPC分类号： B01D53/50 ,  C01B17/60 ,  B01D53/34

    CPC分类号： C01B17/60 ,  B01D53/501

    摘要： Flue gas is desulfurized by absorption in an aqueous ammonium sulfite-ammonium bisulfite solution. Any ammonia which is picked up in the flue gas during desulfurization is removed by scrubbing the flue gas with wash water. Sulfur dioxide is recovered from the absorber effluent solution by acidifying a portion thereof with ammonium bisulfate, crystallizing and decomposing the ammonium sulfate thus formed, reacting the ammonia formed during decomposition with a second portion of the absorber effluent solution to form fresh ammonium sulfite-ammonium bisulfite solution.

    摘要翻译： 烟气通过在亚硫酸铵 - 亚硫酸氢铵水溶液中的吸收而脱硫。 在脱硫期间在烟道气中吸收的任何氨通过用洗涤水洗涤废气来除去。 通过用硫酸氢铵酸化其一部分，从吸收剂流出液中回收二氧化硫，使形成的硫酸铵结晶并分解，使分解过程中形成的氨与吸收剂流出物溶液的第二部分反应，形成新的亚硫酸铵 - 亚硫酸氢铵 解。