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    • 2. 发明申请
    • PROCESS FOR THE ELECTROCHEMICAL PURIFICATION OF ALUMINIUM
    • 方法电化学清洁铝的
    • WO2009007440A3
    • 2009-08-27
    • PCT/EP2008059053
    • 2008-07-11
    • BASF SEMAASE MATTHIASHUBER GUENTHERRICHTER INGOMALKOWSKY ITAMARFISCHER ANDREAS
    • MAASE MATTHIASHUBER GUENTHERRICHTER INGOMALKOWSKY ITAMARFISCHER ANDREAS
    • C25C3/24C25C3/06
    • C25C3/24C25C3/06
    • The present invention relates to a process for the electrochemical purification of aluminium, which comprises the steps (a) provision of an electrolysis apparatus having at least one anode and at least one cathode in an electrolysis space, where the at least one anode and the at least one cathode are connected by an electrolyte and the electrolyte is present in the form of an electrolyte stream; (b) oxidation at the at least one anode which contains aluminium and at least one of the additional metals antimony, lead, iron, bismuth, tin, zinc or copper, where aluminium and the at least one additional metal go at least partly into the electrolyte in the form of their ions; (c) discharge of part of the electrolyte stream from the electrolysis space, where the substream contains at least part of the ions of aluminium and of the at least one additional metal ion; (d) removal of at least part of the at least one additional metal ion from the substream; (e) introduction of the substream which has been depleted in additional metal ions in step (d) into the electrolysis space and (f) deposition of the aluminium from the substream fed in in step (e) on the at least one cathode, where the electric current density at the at least one cathode is at least 50 A/m2.
    • 本发明涉及一种用于铝的电化学清洗力,包括以下步骤:(a)提供具有至少一个阳极和在电解室中,其中所述至少一个阳极和至少一个阴极通过电解质连接的至少一个阴极,和电解质的电解装置 是在电解质流的形式; (B)在含有铝的至少一个阳极和外来金属锑,铅,铁,铋,锡,锌或铜,铝和过渡至少一种异质金属至少部分地进入在它们的离子形式的电解质中的至少一种氧化; (C)排出从电解室中的电解质流的一部分,含有至少部分的铝离子和至少一种异质金属离子的部分流; (D)在部分流的至少一个外来金属离子的耗尽; (E)在步骤(d)馈送到Fremdmetallion耗尽的电流部分,以电解腔和(f)从在步骤(e)中铝的分离提供的至少一个阴极的部分流,所述至少一个阴极的电流密度至少 50 A /平方米施加。
    • 10. 发明申请
    • METHOD FOR PRODUCING N-PHOSPHONOMETHYL IMINODIACETIC ACID
    • 工艺生产N-膦
    • WO02055527A8
    • 2003-03-13
    • PCT/EP0200225
    • 2002-01-11
    • BASF AGMAASE MATTHIASDROEGEMUELLER MICHAEL
    • MAASE MATTHIASDROEGEMUELLER MICHAEL
    • C07F9/38
    • C07F9/3808
    • The invention relates to a method for producing N-phosphonomethyl iminodiacetic acid by reacting an alkali metal salt of iminodiacetic acid with phosphorus trichloride in an aqueous solution, forming iminodiacetic acid hydrochloride, phosphoric acid and corresponding alkali metal chloride. A reaction then takes place with a formaldehyde source and the N-phosphonomethyl iminodiacetic acid desired is obtained from the reaction mixture. During and/or after the reaction of the alkali metal salt of the iminodiacetic acid with phosphorus trichloride, water, optionally containing HCl, is removed from the reaction mixture until there is a concentration of iminodiacetic acid hydrochloride of at least 40 wt. %, in relation to the weight of the reaction mixture minus the weight of the alkali metal chloride. The inventive method enables N-phosphonomethyl iminodiacetic acid to be produced simply and in large quantities.
    • 本发明涉及一种通过亚氨基二乙酸与三氯化在水溶液磷的碱金属盐反应来制备N-膦酸,以形成亚氨基二乙酸,亚磷酸和肠溶发言碱金属氯化物,随后与甲醛源反应和的盐酸的过程中,如果需要的话,回收来自N-膦酸 反应混合物中,由此一个过程中和/或使Umsetung亚氨基二乙酸与含三氯化磷水gegebenengalls HC1的碱金属盐中,从反应混合物中除去直到至少40重量%亚氨基二乙酸的盐酸的浓度,基于所述权重 反应混合物减的碱金属氯化物的重量和存在。 该方法能够生产N-膦容易且以高收率 -