Cement waste product as scrubbing medium for sulfur oxides
    3.
    发明授权
    Cement waste product as scrubbing medium for sulfur oxides 失效
    水泥废物作为硫氧化物的洗涤介质

    公开(公告)号:US4276272A

    公开(公告)日:1981-06-30

    申请号:US130665

    申请日:1980-03-17

    CPC分类号: B01D53/507

    摘要: Cement waste product (CWP), such as recovered from kilns utilized in cement production, is used for scrubbing of sulfur oxide-containing industrial offgases. The CWP is preconditioned with liquid water prior to employing it as a scrubbing medium. Preconditioning involves addition of sufficient water to the essentially anhydrous CWP to achieve essentially total rehydration of the rehydratable calcium compounds contained in the CWP, for example, aluminates, oxide and sulfates. The preconditioned CWP is dried and used as a highly efficient scrubbing medium for sulfur oxides.

    摘要翻译: 用于水泥生产中使用的窑回收的水泥废物(CWP)用于洗涤含硫氧化物的工业废气。 在将其用作洗涤介质之前,将CWP预先用液态水预处理。 预处理包括向基本上无水的CWP中加入足够的水以实现包含在CWP中的可再水化的钙化合物基本上全部的再水化,例如铝酸盐,氧化物和硫酸盐。 将预处理的CWP干燥并用作硫氧化物的高效洗涤介质。