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    CHEMICAL PROCESS TO PRODUCE HYDROGEN CHLORIDE AND CHLORIDE-FREE COMPOUND POTASSIUM SULFATE FERTILIZERS OR OTHER METAL SULFATES
    22.
    发明公开
    CHEMICAL PROCESS TO PRODUCE HYDROGEN CHLORIDE AND CHLORIDE-FREE COMPOUND POTASSIUM SULFATE FERTILIZERS OR OTHER METAL SULFATES 审中-公开
    化学方法用于生产盐酸和氯化钠免费混合硫酸钾肥料含或其他金属的硫酸盐

    公开(公告)号：EP2188211A1

    公开(公告)日：2010-05-26

    申请号：EP08763571.0

    申请日：2008-06-15

    申请人： F.P.C. Enterprise (2008) LTD

    发明人： FINKELSHTEIN, Leonid

    IPC分类号： C01B17/96 ,  C01B7/03 ,  C01C1/24 ,  C01D5/02 ,  C01D5/12 ,  C01F11/46

    CPC分类号： C01B17/96 ,  C01B7/035 ,  C01C1/24 ,  C01D5/02 ,  C01D5/12 ,  C01F5/40

    摘要： A method is disclosed for production of a sulfate-containing salt and anhydrous gaseous HCl from a metal chloride (MClx) and oleum. MClx and oleum are mixed together with a water-containing liquid, forming gaseous HCl and a solution of a sulfate-containing salt or double salt. The salt is precipitated from the solution, and in a preferred embodiment, the supernatant liquid from the precipitation is recycled to the reaction mixture as the water-containing liquid in subsequent reaction cycles. In a preferred embodiment, HCl discharged from the reaction mixture is scrubbed to remove dust, water vapor and traces of H2SO4, yielding anhydrous HCl of >90% purity. The exothermicity of the reaction between the water-containing liquid and the oleum is sufficient that, unlike methods known in the prior art, the process proceeds quickly and efficiently without any necessity for additional heating of the reaction mixture. This method provides high-purity, low-chlorine sulfates, including the novel potassium sulfate double salts K3(NH4)(SO4)2, 3K2SO4*MgSO4 and 3K2SO4*CanMg2-nSO4.

    Process for conversion of sulphuric acid waste (for example from titanium dioxide) into useful products
    25.
    发明公开
    Process for conversion of sulphuric acid waste (for example from titanium dioxide) into useful products 失效
    在nutzvolle Produkte的Verfahren zur Umwandlung vonAbfallschwefelsäure（z.B. bei der Titandioxidherstellung）。

    公开(公告)号：EP0065412A1

    公开(公告)日：1982-11-24

    申请号：EP82302427.8

    申请日：1982-05-12

    申请人： Hunter, James Beaumond

    发明人： Hunter, James Beaumond

    IPC分类号： C01B7/03 ,  C01D5/02 ,  C01G23/053

    CPC分类号： C01D3/00 ,  C01B7/035 ,  C01D5/02 ,  C01G49/02

    摘要： The invention relates to a process for treating effluents containing sulphuric acid, in which process the effluent is mixed with an alkali metal sulphate such as a sodium compound under conditions for the formation of the corresponding alkali metal bisulphate, the bisulphate is dried or crystallized and then reacted with an alkali metal halide such as chloride to form the corresponding hydrogen halide. The reaction utilised by the invention is as follows:

    摘要翻译： 本发明涉及用于处理含硫酸的废水的方法，其中在形成相应的碱金属硫酸氢盐的条件下，流出物与碱金属硫酸盐如钠化合物混合，硫酸氢盐干燥或结晶，然后 与碱金属卤化物如氯化物反应形成相应的卤化氢。 本发明使用的反应如下：Na 2 SO 4 + H 2 SO 4→2 Na HSO 4