Process for the concentration of sulfuric acid
    1.
    发明授权
    Process for the concentration of sulfuric acid 失效
    硫酸浓缩过程

    公开(公告)号:US4613416A

    公开(公告)日:1986-09-23

    申请号:US604330

    申请日:1984-04-26

    IPC分类号: C25B1/22 D01F13/02 C25B1/20

    CPC分类号: D01F13/02 C25B1/22 Y02P70/627

    摘要: A process is described for increasing the sulfuric acid concentration of solutions containing an alkali metal sulfate, sulfuric acid and alkaline earth metal ions. The solutions to be worked up are introduced into the anode compartment of an electrolysis cell. The anode compartment and the cathode compartment of the cell are each bounded by a cation exchange membrane. A center chamber is located between the two membranes. This center chamber is filled with an aqueous solution containing alkali metal ions. The concentration of alkaline earth metal ions in the solution in the center chamber must be kept below 5 mg/l during the electrolysis.

    摘要翻译: 描述了用于提高含有碱金属硫酸盐,硫酸和碱土金属离子的溶液的硫酸浓度的方法。 将待处理的溶液引入电解池的阳极室中。 电池的阳极室和阴极室各自用阳离子交换膜界定。 中间室位于两个膜之间。 该中心室填充有含有碱金属离子的水溶液。 在电解过程中,中心室溶液中碱土金属离子的浓度必须保持在5mg / l以下。

    Moldings made of silicate material and processes for their preparation
    2.
    发明授权
    Moldings made of silicate material and processes for their preparation 失效
    由硅酸盐材料制成的模制品及其制备方法

    公开(公告)号:US4703029A

    公开(公告)日:1987-10-27

    申请号:US755477

    申请日:1985-07-16

    摘要: Moldings are described which are composed of a silicic acid with a layer structure, or salts thereof with the general formula (H,M).sub.2 Si.sub.y O.sub.2y+1, or the corresponding hydrates, M representing lithium, sodium, potassium or ammonium and y being 1.7 to 24. They can be prepared for example by extruding pulverulent layer silicic acids, or salts thereof with the general formula (H,M).sub.2 Si.sub.y O.sub.2y+1, or the corresponding hydrates, M representing lithium, sodium, potassium or ammonium and y being 1.7 to 24, to produce cylindrical blanks, if appropriate after moistening with water or an organic solvent, and then drying the blanks, or by introducing the same starting materials into a mold, as dry or moist powders, converting them to moldings with the application of pressure and, if appropriate, drying the moldings.

    摘要翻译: 描述了由具有层结构的硅酸或具有通式(H,M)2 SiO 2 y + 1的盐或其相应的水合物,M代表锂,钠,钾或铵而形成的模制品,y表示1.7至 它们可以例如通过挤出粉状层状硅酸或其盐与通式(H,M)2 SiO 2 y + 1或相应的水合物M(其代表锂,钠,钾或铵)和y分别为1.7至 如图24所示,在用水或有机溶剂润湿之后,如果合适的话,生产圆柱形坯料,然后干燥坯料,或者通过将相同的起始材料引入模具中,作为干燥或潮湿的粉末,将其转化成模制品,同时施加压力 并且如果合适,干燥模制品。

    Shaped articles of silicate material, a process for their production and
their use
    5.
    发明授权
    Shaped articles of silicate material, a process for their production and their use 失效
    成型的硅酸盐材料,其生产和使用的过程

    公开(公告)号:US4631158A

    公开(公告)日:1986-12-23

    申请号:US793562

    申请日:1985-10-31

    摘要: A process for the production of shaped articles from silicate material by extrusion and/or pelleting and subsequent annealing is described. In this process, pulverulent layered silicic acids of the general formula H.sub.2 Si.sub.y O.sub.2y+1, in which y is a number from 1.7 to 24, or salts thereof, in which all or some of the H is replaced by at least one cation from the group comprising Li.sup.+, Na.sup.+, K.sup.+, NH.sub.4.sup.+, Ca.sup.2+, Cu.sup.2+, Co.sup.2+, Ni.sup.2+ and Mg.sup.2+, are mixed with water or an organic solvent, the mixture is extruded and/or pelleted to give roll-shaped or tube-shaped pieces and these are then dried and annealed under conditions such that the starting material is chiefly converted into cristobalite and/or tridymite. The same material can also be pressed in a molding tool under pressure. Under these conditions, shaped articles which predominantly consist of cristobalite or tridymite and have a Shore hardness of at least 70 can be obtained.

    摘要翻译: 描述了通过挤出和/或造粒和随后的退火由硅酸盐材料生产成形制品的方法。 在该方法中,通式为H2SiyO2y + 1的粉末层状硅酸,其中y为1.7至24的数,或其盐,其中所有或部分H被至少一个阳离子所取代,所述阳离子包括 将Li +,Na +,K +,NH4 +,Ca2 +,Cu2 +,Co2 +,Ni2 +和Mg2 +与水或有机溶剂混合,将混合物挤出和/或造粒,得到辊状或管状片,然后将其干燥 并在使原料主要转化为方英石和/或鳞石英的条件下退火。 相同的材料也可以在压力下在模具中压制。 在这些条件下,可以获得主要由方英石或鳞石英组成且肖氏硬度至少为70的成型制品。

    Process for the preparation of phosphorus pentachloride
    6.
    发明授权
    Process for the preparation of phosphorus pentachloride 失效
    五氯化磷的制备方法

    公开(公告)号:US4335085A

    公开(公告)日:1982-06-15

    申请号:US239455

    申请日:1981-03-02

    IPC分类号: C01B25/10

    CPC分类号: C01B25/10

    摘要: The invention relates to a process for the preparation of highly pure phosphorus pentachloride in the form of a free-flowing crystalline powder by reaction of phosphorus trichloride with chlorine. The reaction is carried out in two stages. In the first stage, phosphorus trichloride is combined with 0.1 to 0.999 times the molar amount of chlorine at a temperature of 0.degree. to 150.degree. C., while stirring, and is thereby reacted to give a crystal sludge comprising phosphorus pentachloride and phosphorus trichloride. In the second stage, this sludge is allowed to react with an excess of chlorine at 0.degree. to 150.degree. C. to give phosphorus pentachloride.

    摘要翻译: 本发明涉及通过三氯化磷与氯的反应制备自由流动的结晶性粉末形式的高纯度五氯化磷的方法。 反应分两个阶段进行。 在第一阶段中,三氯化磷在0〜150℃的温度下与氯的摩尔量的0.1〜0.999倍混合,同时搅拌,由此反应,得到包含五氯化磷和三氯化磷的结晶污泥。 在第二阶段,使该污泥在0〜150℃下与过量的氯反应,得到五氯化磷。

    Process for the manufacture of phosphorus pentachloride
    7.
    发明授权
    Process for the manufacture of phosphorus pentachloride 失效
    五氯化磷生产工艺

    公开(公告)号:US4265865A

    公开(公告)日:1981-05-05

    申请号:US167660

    申请日:1980-07-11

    IPC分类号: C01B25/10

    CPC分类号: C01B25/10

    摘要: Phosphorus pentachloride is manufactured from chlorine and phosphorus trichloride in the presence of molten phosphorus pentachloride. The process can be carried out such that the reaction product flows out from the reactor continuously as a melt. Reaction pressures of more than 1 bar and temperatures of from 160.degree. to 250.degree. C. are preferred.

    摘要翻译: 在五氯化磷存在的情况下,五氯化磷由氯和三氯化磷制成。 该方法可以进行,使得反应产物作为熔体连续流出反应器。 大于1巴的反应压力和160至250℃的温度是优选的。

    Electrochemical process for treating liquid electrolytes
    8.
    发明授权
    Electrochemical process for treating liquid electrolytes 失效
    用于处理液体电解质的电化学处理

    公开(公告)号:US5104497A

    公开(公告)日:1992-04-14

    申请号:US634788

    申请日:1990-12-27

    摘要: A process for the manipulation of liquid electrolyte and gas during the operation of an electrochemical cell having at least one gas diffusion electrode and a counter electrode forming an electrolyte space for a flowing electrolyte which flows through the cell, from the upper end of the cell to its lower end, which electrolyte space is nonpartitioned or is partitioned by a separator, the gas diffusion electrode having a surface facing toward the electrolyte space and an opposite surface facing opposite from the electrolyte space, and the cell having a gas space located on the opposite surface, the process comprising:feeding gas to or discharging gas from the gas space,feeding electrolyte to the electrolyte space and permitting the electrolyte to flow through the space from its upper end to its lower end by gravity only, the hydrostatic pressure between the upper end of the electrolyte space and the lower end of the electrolyte space being compensated for by decreasing the hydrodynamic pressure to provide a constant pressure at all locations along the length of the electrolyte space, from the lower end to the upper end.

    摘要翻译: 一种在具有至少一个气体扩散电极和对电极的电化学电池操作期间操作液体电解质和气体的方法,所述气体扩散电极和对电极形成用于流过细胞的流动电解质的电解质空间,从电池的上端到 其下端,哪个电解质空间未被分隔或被分离器隔开,气体扩散电极具有面向电解质空间的表面和与电解质空间相对的相对表面,并且具有位于相对的气体空间的电池 所述方法包括:将气体从所述气体空间供给到气体或从气体空间排出气体,将电解质供给到所述电解质空间,并允许所述电解质仅通过重力从其上端流过所述空间至其下端,所述上部 通过减少流体动力来补偿电解质空间的末端和电解质空间的下端 c压力以在电解质空间的长度的所有位置处从下端到上端提供恒定的压力。

    Process for the electrolysis of liquid electrolytes using film flow
techniques
    10.
    发明授权
    Process for the electrolysis of liquid electrolytes using film flow techniques 失效
    使用薄膜流动技术电解液体电解质的方法

    公开(公告)号:US4627897A

    公开(公告)日:1986-12-09

    申请号:US692306

    申请日:1985-01-17

    CPC分类号: C25B9/00 C25B11/03 C25B15/08

    摘要: This process, in which gas bubbles are formed in the electrolyte, is carried out in electrolytic cells which are non-partitioned or partitioned by at least one separator and in which at least one electrode is perforated. For this purpose, the electrolyte is caused to flow by means of gravity through the electrolytic cell in such a manner that a gas space is formed laterally to the main direction of flow of the electrolyte, both electrodes or the separators or one separator and the perforated electrode being wetted.

    摘要翻译: 这种在电解质中形成气泡的方法是在电解槽中进行,这些电解槽是由至少一个隔板未分隔或隔开的,其中至少有一个电极被穿孔。 为此,使电解液通过重力流过电解槽,使得气体空间横向于电解质的主要流动方向形成,电极或分隔器或一个分离器和穿孔 电极被润湿。