METHOD FOR CONCENTRATING DILUTE SULFURIC ACID AND AN APPARATUS FOR CONCENTRATING DILUTE SULFURIC ACID
    2.
    发明申请
    METHOD FOR CONCENTRATING DILUTE SULFURIC ACID AND AN APPARATUS FOR CONCENTRATING DILUTE SULFURIC ACID 审中-公开
    用于浓缩稀释的硫酸的方法和用于浓缩稀释的硫酸的装置

    公开(公告)号:US20120067740A1

    公开(公告)日:2012-03-22

    申请号:US13322262

    申请日:2010-05-25

    IPC分类号: C25B1/22 C25B15/00 C25B9/18

    CPC分类号: C01B17/88 Y02P20/132

    摘要: A method for concentrating dilute sulfuric acid involves feeding dilute sulfuric acid through at least two electrolytic cells depolarized by sulfur dioxide, and through a cation conductive membrane separating the cathode and anode sides in the electrolytic cell. Also provided is an apparatus for concentrating sulfuric acid, wherein at least a first electrolytic cell is in fluid communication with a second electrolytic cell, and wherein a cation conductive membrane separates the cathode and anode sides in the electrolytic cells.

    摘要翻译: 用于浓缩稀硫酸的方法包括通过至少两个由二氧化硫去极化的电解池和通过分离电解槽中的阴极和阳极侧的阳离子导电膜来进料稀硫酸。 还提供了一种用于浓缩硫酸的装置,其中至少第一电解池与第二电解槽流体连通,并且其中阳离子导电膜分离电解槽中的阴极和阳极侧。

    Method for the removal of mercury from sulphuric acid with thiosulphate precipitation
    3.
    发明授权
    Method for the removal of mercury from sulphuric acid with thiosulphate precipitation 有权
    用硫代硫酸盐沉淀从硫酸中去除汞的方法

    公开(公告)号:US07452521B2

    公开(公告)日:2008-11-18

    申请号:US10566680

    申请日:2004-07-16

    IPC分类号: C01B17/90

    摘要: This invention relates to a method for removing mercury from dilute sulphuric acid. According to the method sulphuric acid solution is scrubbed with an aqueous solution containing thiosulphate, which precipitates the mercury present in the sulphuric acid solution either as mercury sulphide or, in a chlorine-containing environment, as a mercury sulphide-mercury chloride double salt. The quantity of thiosulphate to be fed is adjusted so that it precipitates the mercury in the sulphuric acid solution, but still does not form elemental sulphur.

    摘要翻译: 本发明涉及从稀硫酸中去除汞的方法。 根据该方法,用含硫代硫酸盐的水溶液洗涤硫酸溶液,其将硫酸溶液中存在的汞作为硫化汞或在含氯环境中沉淀为硫化汞 - 氯化汞复盐。 调整供给的硫代硫酸盐的量,使其在硫酸溶液中析出汞,但仍不形成元素硫。