Process for the production of sodium polysulfides from the elements
sodium and sulfur
    1.
    发明授权
    Process for the production of sodium polysulfides from the elements sodium and sulfur 失效
    从元素钠和硫生产多硫化钠的方法

    公开(公告)号:US4640832A

    公开(公告)日:1987-02-03

    申请号:US772395

    申请日:1985-09-04

    IPC分类号: C01B17/22 B01J19/02 C01B17/34

    CPC分类号: C01B17/34 C01P2006/80

    摘要: There is described a process for the production of pure sodium polysulfides directly from the elements sodium and sulfur. For this purpose, the sodium and the sulfur under a protective gas and in a stoichiometrical ratio corresponding to the desired polysulfide are alternatingly dosed into a previously present melt of a polysulfide with vigorous stirring, the dosing being in portions such that upon introduction of the sodium the reaction mixture remains in the condition of a stirrable suspension and upon introduction of the sulfur this is completely reacted to a polysulfide of the desired or higher sulfur content.

    摘要翻译: 描述了直接从元素钠和硫生产纯多硫化钠的方法。 为此,将保护气体下的钠和硫与化学计量比对应于所需的多硫化物交替计量到先前存在的多硫化物的熔体中,同时剧烈搅拌,该给药部分使得在引入钠 反应混合物保持在可搅拌悬浮液的状态,并且在引入硫时,其与所需或更高硫含量的多硫化物完全反应。

    Method of preparing Na.sub.2 S (II)
    5.
    发明授权
    Method of preparing Na.sub.2 S (II) 失效
    制备NA2S(II)

    公开(公告)号:US5075098A

    公开(公告)日:1991-12-24

    申请号:US510269

    申请日:1990-04-19

    IPC分类号: C01B17/22

    摘要: A method of preparing sodium monosulfide by means of reacting a sodium polysulfide with sodium under protective gas, the sodium polysulfide is placed in a first stage in a finely distributed, solid state in a receiver, preheated to temperatures of 100.degree.-150.degree. C., liquid sodium is gradually added in the required amount to the material in the receiver under intensive mixing, whereby the temperature of the reaction mixture is maintained at 120.degree.-250.degree. C. and in a second stage the formed initial product is allowed to continue to react, or postreact under continuation of the mixing at 250.degree.-480.degree. C., until a Na.sub.2 S content of at least 95% by weight has been attained.

    摘要翻译: 通过在保护气体下使多硫化钠与钠反应制备单硫化钠的方法,将多硫化钠置于接收器中以细分散的固态的第一阶段,预热至100-150℃的温度。 在密集混合下,将液态钠逐渐加入接收器中的物质,由此将反应混合物的温度保持在120-250℃,在第二阶段中使形成的初始产物继续 在250-480℃下继续混合反应或反应,直至达到至少95重量%的Na 2 S含量。

    Method of preparing NA2S (I)
    6.
    发明授权
    Method of preparing NA2S (I) 失效
    制备NA2S(I)的方法

    公开(公告)号:US5039506A

    公开(公告)日:1991-08-13

    申请号:US510268

    申请日:1990-04-19

    IPC分类号: C01B17/22

    摘要: In a method of preparing sodium monosulfide by means of reacting sodium and sulfur under protective gas, the entire sodium determined for reaction is placed in a receiver in a first stage, preheated to temperatures of 100.degree.-150.degree. C., sulfur is gradually added in the required amount of the material in the receiver under intensive mixing, whereby the temperature of the reaction mixture is maintained at 120.degree.-250.degree. C., and in a second stage the formed initial product is allowed to react under continuation of the mixing at 250.degree.-480.degree. C., until a Na.sub.2 S content of at least 95% by weight has been attained.

    摘要翻译: 在保护气体中通过使钠和硫反应制备单硫化钠的方法中,将反应中确定的全部钠置于第一阶段的接收器中,预热至100-150℃,逐渐加入硫 在强化混合下在接收器中的所需量的材料,由此将反应混合物的温度保持在120-250℃,在第二阶段中,使形成的初始产物在混合物的继续下进行反应 在250-480℃下,直至达到至少95重量%的Na 2 S含量。

    Method of preparing Na.sub.2 S (III)
    7.
    发明授权
    Method of preparing Na.sub.2 S (III) 失效
    制备Na2S(Ⅲ)的方法

    公开(公告)号:US5039505A

    公开(公告)日:1991-08-13

    申请号:US510267

    申请日:1990-04-19

    IPC分类号: C01B17/22

    摘要: A method of preparing sodium monosulfide by means of reacting sodium and sulfur under protective gas, wherein sodium monosulfide is placed in a first stage in a receiver in a finely distributed, solid state, the initial material is preheated to 120.degree.-150.degree. C. and sulfur and sodium are alternately added in the required amount ratio under intensive mixing, whereby the temperature of the reation mixture is maintained at 120.degree.-250.degree. C., and in a second stage the formed initial product is allowed to continue to react or postreact under continuation of the mixing at 250.degree.-480.degree. C., until a Na.sub.2 S content of at least 95% by weight has been attained.

    摘要翻译: 通过在保护气体下使钠和硫反应制备单硫化钠的方法,其中单硫化钠以细分散的固体状态放置在接收器中的第一阶段中,将初始材料预热至120℃-150℃。 在浓缩混合下以所需量的比率交替地添加硫和钠,由此将该回收混合物的温度保持在120〜-250℃,在第二阶段使形成的初始产物继续反应或 在250°-480℃的混合下继续反应,直至达到至少95重量%的Na 2 S含量。

    Device and process for the fused-salt electrolysis of alkali metal
halides
    8.
    发明授权
    Device and process for the fused-salt electrolysis of alkali metal halides 失效
    用于碱金属卤化物的熔盐电解的装置和方法

    公开(公告)号:US4584068A

    公开(公告)日:1986-04-22

    申请号:US668051

    申请日:1984-11-05

    IPC分类号: C25C3/02 C25C7/00 C25C7/06

    CPC分类号: C25C3/02 C25C7/005

    摘要: A device for the fused salt electrolysis of alkali metal halides by the Downs principle becomes operable on an expanded scale, by a process ensuring a favorable thermal economy of the cell, through the incorporation of a double bottom, an improved housing for receiving the anode sleeves, and a differentiatedly heat controllable base, shell, and cover construction with variable current load.

    摘要翻译: 用于通过Downs原理进行的碱金属卤化物的熔融盐电解的装置可通过加入双层底部,用于接纳阳极套筒的改进的壳体,通过确保电池的良好的热经济性的方法,在扩展的尺度上可操作 ,以及具有可变电流负载的差分热可控的基座,外壳和盖结构。

    Process for the continuous production of solid alkali metal strands
    9.
    发明授权
    Process for the continuous production of solid alkali metal strands 失效
    连续生产固体碱金属股线的方法

    公开(公告)号:US4536938A

    公开(公告)日:1985-08-27

    申请号:US255512

    申请日:1981-04-17

    摘要: A process is described for the production of solid alkali metal strands, whereby molten alkali metal is introduced to an extrusion apparatus and is continuously cooled down as the metal travels along a section of the extrusion apparatus by means of a worm. There is a temperature gradient between the point at which the molten alkali metal enters the extruder down to a temperature below its solidification point near the nozzle, at which the metal is still sufficiently ductile for extrusion, and is then fed to a nozzle for shaping into the stands.

    摘要翻译: 描述了用于生产固体碱金属股线的方法,其中熔融碱金属被引入到挤出装置中,并且随着金属通过蠕虫沿挤出装置的一部分行进而连续冷却。 在熔融碱金属进入挤压机的点之间存在温度梯度,其温度低于喷嘴附近的凝固点的温度,在该温度下金属仍然足够延展挤出,然后被供给到用于成形的喷嘴 立场。