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    • 42. 发明授权
    • Electrolyser with coiled inlet hose
    • 电磁线圈带入口软管
    • US09045837B2
    • 2015-06-02
    • US13994042
    • 2011-11-15
    • Peter WolteringRandolf KieferRainer WeberAndreas Bulan
    • Peter WolteringRandolf KieferRainer WeberAndreas Bulan
    • C25B9/08C25B15/08C25B1/46
    • C25B15/08C25B1/46C25B9/08C25B9/18C25B15/06
    • Electrolyzer comprising at least one single electrolyzer element which comprises at least one anode compartment with an anode, one cathode compartment with a cathode and one ion exchange membrane arranged between the anode and the cathode compartments, with the anode and/or cathode being a gas diffusion electrode. A gap is provided between the gas diffusion electrode and the ion exchange membrane, with an electrolyte inlet arranged at the upper end of the gap and an electrolyte outlet at the lower end of the gap and a gas inlet and a gas outlet. The electrolyte outlet extending into a discharge header, and the electrolyte inlet connected to an electrolyte feed tank and having an overflow, the overflow connected to the discharge header, with a coiled hose connecting the electrolyte feed tank with the electrolyte inlet and with a coiled hose connecting the overflow with the discharge header.
    • 电解器包括至少一个单个电解器元件,其包括具有阳极的至少一个阳极室,具有阴极的一个阴极室和布置在阳极和阴极室之间的一个离子交换膜,阳极和/或阴极是气体扩散 电极。 在气体扩散电极和离子交换膜之间设置有间隙,电解液入口布置在间隙的上端,并且间隙的下端具有电解液出口,气体入口和气体出口。 电解液出口延伸到排放集管中,电解质入口连接到电解质进料罐并具有溢流,溢流口连接到排出集管,连接软管将电解质进料罐与电解液入口连接,并且连接软管 将溢流与排放管连接。
    • 45. 发明授权
    • Process for preparing methylenediphenyl diisocyanates
    • 亚甲基二苯基二异氰酸酯的制备方法
    • US08318971B2
    • 2012-11-27
    • US12394149
    • 2009-02-27
    • Fritz PohlAndreas BulanRainer WeberRichard AdamsonMatthias BöhmChristian Six
    • Fritz PohlAndreas BulanRainer WeberRichard AdamsonMatthias BöhmChristian Six
    • C07C249/00
    • C25B15/08C07C209/78C07C263/10C25B1/26C07C211/50C07C265/14
    • The invention relates to a process for preparing methylenediphenyl diisocyanates which comprises at least the steps: A) reaction of aniline with formaldehyde in the presence of hydrochloric acid as catalyst to give a mixture of diamines and polyamines of the diphenylmethane series (MDA) and subsequent at least partial neutralization of the hydrochloric acid by means of alkali metal hydroxide, B) reaction of the mixture of diamines and polyamines of the diphenylmethane series obtained in step A) with phosgene to give a mixture of diisocyanates and polyisocyanates of the diphenylmethane series (MDI) and hydrogen chloride, wherein C) the hydrochloric acid which has been neutralized in step A) is separated off in the form of a solution containing alkali metal chloride and is subsequently at least partly fed to an electrochemical oxidation to form chlorine, alkali metal hydroxide and optionally hydrogen and D) at least part of the chlorine produced in step C) is used for preparing the phosgene used in step B).
    • 本发明涉及一种制备亚甲基二苯基二异氰酸酯的方法,其至少包括以下步骤:A)在盐酸作为催化剂存在下苯胺与甲醛的反应,得到二苯基甲烷系列(MDA)的二胺和多胺的混合物, 通过碱金属氢氧化物最小程度地中和盐酸,B)将步骤A)中得到的二苯基甲烷系列的二胺和多胺的混合物与光气反应,得到二苯基甲烷系列(MDI)的二异氰酸酯和多异氰酸酯的混合物, 和氯化氢,其中C)在步骤A)中已中和的盐酸以含有碱金属氯化物的溶液的形式分离,随后至少部分地进料至电化学氧化以形成氯,碱金属氢氧化物和 任选地氢和D)步骤C)中产生的至少一部分氯用于制备磷 在步骤B)中使用的烯。