Process for producing sulphuric acid
    1.
    发明授权
    Process for producing sulphuric acid 失效
    硫酸生产工艺

    公开(公告)号:US4526768A

    公开(公告)日:1985-07-02

    申请号:US551079

    申请日:1983-11-14

    CPC分类号: C01B17/7655

    摘要: In a process for producing sulphuric acid from roasting gas containing SO.sub.2, H.sub.2 O and Hg, comprising the steps of(a) drying the gas with H.sub.2 SO.sub.4(b) subjecting the gas to a catalytic oxidation treatment so as to produce a SO.sub.3 rich gas, and(c) absorbing the SO.sub.3 in concentrated sulphuric acid, while maintaining the concentration of this acid at its initial value by addition of diluted sulphuric acid, the gas from step (b) is scrubbed with oleum, thereby producing in step(c) H.sub.2 SO.sub.4 with less than 0.1 mg/l of Hg.

    摘要翻译: 在从含有SO 2,H 2 O和Hg的焙烧气体生产硫酸的方法中,包括以下步骤:(a)用H 2 SO 4干燥气体(b)使气体进行催化氧化处理以产生富SO 3的气体;以及 (c)在浓硫酸中吸收SO 3,同时通过加入稀硫酸将酸的浓度保持在初始值,步骤(b)中的气体用发烟硫酸洗涤,从而在步骤(c)中产生具有 小于0.1mg / l的Hg。