PROCESS FOR PRODUCING ISOCYANATES
    51.
    发明申请
    PROCESS FOR PRODUCING ISOCYANATES 有权
    生产异氰酸酯的方法

    公开(公告)号:US20090166180A1

    公开(公告)日:2009-07-02

    申请号:US12164716

    申请日:2008-06-30

    IPC分类号: B01J19/08

    摘要: An isocyanate is produced by:(a) reacting chlorine with carbon monoxide to form phosgene, (b) reacting the phosgene with an organic amine to form an isocyanate and hydrogen chloride, (c) separating the isocyanate and hydrogen chloride, (d) optionally, purifying the hydrogen chloride, (e) preparing an aqueous solution of the hydrogen chloride, (f) optionally, purifying the aqueous solution of hydrogen chloride, (g) subjecting the aqueous hydrogen chloride solution to electrochemical oxidation to form chlorine, and (h) returning at least a portion of the chlorine produced in (g) to (a).

    摘要翻译: 通过以下方法制备异氰酸酯:(a)使氯与一氧化碳反应以形成光气,(b)使光气与有机胺反应形成异氰酸酯和氯化氢,(c)将异氰酸酯和氯化氢分离,(d) ,纯化氯化氢,(e)制备氯化氢水溶液,(f)任选地,纯化氯化氢水溶液,(g)使氯化氢水溶液进行电化学氧化形成氯,和(h )将(g)至(a)中产生的氯的至少一部分返回。

    Electrochemical cell
    52.
    发明申请
    Electrochemical cell 有权
    电化学电池

    公开(公告)号:US20060249380A1

    公开(公告)日:2006-11-09

    申请号:US10566066

    申请日:2004-07-19

    IPC分类号: C25B13/08

    CPC分类号: C25B9/08 C25B13/00

    摘要: The invention describes an electrochemical cell for the electrolysis of an aqueous solution of hydrogen chloride, comprising at least an anode half-cell with an anode, a cathode half-cell with a gas diffusion electrode as cathode and an ion exchange membrane arranged between the anode half-cell and the cathode half-cell, the membrane consisting of at least a perfluorosulfonic acid polymer, wherein the gas diffusion electrode and the ion exchange membrane are adjacent to each other, characterised in that the gas diffusion electrode and the ion exchange membrane, under a pressure of 250 g/cm2 and at a temperature of 60° C., have a contact area of at least 50%, with respect to the geometric area.

    摘要翻译: 本发明描述了用于电解氯化氢水溶液的电化学电池,至少包括具有阳极的阳极半电池,具有气体扩散电极作为阴极的阴极半电池和布置在阳极之间的离子交换膜 半电池和阴极半电池,所述膜由至少全氟磺酸聚合物组成,其中所述气体扩散电极和所述离子交换膜彼此相邻,其特征在于,所述气体扩散电极和所述离子交换膜, 在250g / cm 2的压力和60℃的温度下,相对于几何面积具有至少50%的接触面积。

    Method for producing silane
    53.
    发明授权
    Method for producing silane 失效
    硅烷的制造方法

    公开(公告)号:US06852301B2

    公开(公告)日:2005-02-08

    申请号:US10450207

    申请日:2001-11-21

    IPC分类号: C01B33/04 C01B33/18

    摘要: The invention relates to a method for producing silane (SiH4) by a) reacting metallurgical silicon with silicon tetrachloride (SiCl4) and hydrogen (H2), to form a crude gas stream containing trichlorosilane (SiHCl3) and silicon tetrachloride (SiCl4), b) removing impurities from the resulting crude gas stream by washing with condensed chlorosilanes, c) condensing and subsequently, separating the purified crude gas stream by distillation, d) returning the partial stream consisting essentially of SiCl4 to the reaction of metallurgical silicon with SiCl4 and H2, e) disproportionating the partial stream containing SiHCl3, to form SiCl4 and SiH4 and f) returning the SiH4 formed by disproportionation to the reaction of metallurgical silicon with SiCl4 and H2, the crude gas stream containing trichlorosilane and silicon tetrachloride being liberated from solids as far as possible by gas filtration before being washed with the condensed chlorosilanes. The washing process with the condensed chlorosilanes is carried out at a pressure of 25 to 40 bar and at a temperature of at least 150° C. in a single-stage distillation column and is carried out in such a way that 0.1 to 3 wt. % of the crude gas stream containing trichlorosilane and silicon tetrachloride is recovered in the form of a condensed liquid phase consisting essentially of SiCl4, this liquid phase then being removed from the SiCl4 circuit and expanded to a pressure of 1 bar outside said SiCl4 circuit and cooled to a temperature of 10 to 40° C., whereby dissolved impurities separate out and are then removed by filtration.

    摘要翻译: 本发明涉及一种通过以下步骤制备硅烷(SiH 4)的方法:a)使冶金硅与四氯化硅(SiCl 4)和氢(H 2)反应,形成含有三氯硅烷(SiHCl 3)和四氯化硅(SiCl 4)的粗气流,b) 通过用冷凝的氯硅烷洗涤从所得粗气流中除去杂质,c)冷凝并随后通过蒸馏分离纯化的粗气流,d)将基本上由SiCl 4组成的部分流返回到冶金硅与SiCl 4和H 2的反应中, e)歧化含SiHCl3的部分流,以形成SiCl4和SiH4,以及f)将通过歧化形成的SiH 4返回至冶金硅与SiCl4和H2的反应,将含有三氯硅烷和四氯化硅的粗气流从固体释放至 在用冷凝的氯硅烷洗涤之前可能通过气体过滤。 冷凝氯硅烷的洗涤过程在单级蒸馏塔中在25至40巴的压力和至少150℃的温度下进行,并以0.1至3重量% 含有三氯硅烷和四氯化硅的粗气流的%以基本上由SiCl 4组成的冷凝液相的形式回收,然后将该液相从SiCl4回路除去并在SiCl 4回路外扩张至1巴的压力,并冷却 温度为10〜40℃,由此分离出溶解的杂质,然后通过过滤除去。

    Method and device for controlling a valve
    54.
    发明授权
    Method and device for controlling a valve 有权
    用于控制阀门的方法和装置

    公开(公告)号:US09103458B2

    公开(公告)日:2015-08-11

    申请号:US13701598

    申请日:2011-05-30

    摘要: A method for controlling a valve including a spring, an actuator having an actuator force opposing the spring, and a pin actuatable by the actuator. To open the valve, in a first operating mode a current having a predefined curve is applied to the actuator, starting from a starting value of the current at which the pin is positioned to allow the valve to close, measured values of the current are determined chronologically sequentially, a reference value of the current takes on the current measured value of the current when the measured current deviates from the applied current by a predefined degree. In a second operating mode, a current having a predefined curve is applied to the actuator, starting with the starting value of the current to a final value of the current at which the pin is in a position that prevents the valve from closing.

    摘要翻译: 一种用于控制阀的方法,所述阀包括弹簧,具有与弹簧相对的致动器力的致动器以及由致动器致动的销。 为了打开阀门,在第一操作模式中,将具有预定曲线的电流施加到致动器,从定位销的电流的起始值开始以允许阀关闭,确定电流的测量值 按照时间顺序,当测量的电流偏离所施加的电流预定义的程度时,电流的参考值占据电流的当前测量值。 在第二操作模式中,将具有预定曲线的电流施加到致动器,从电流的起始值开始到销处于防止阀关闭的位置的电流的最终值。

    Electronic Plug-In Module for Accommodation in a Module Rack
    56.
    发明申请
    Electronic Plug-In Module for Accommodation in a Module Rack 有权
    电子插件模块,用于模块机架中的住宿

    公开(公告)号:US20090175007A1

    公开(公告)日:2009-07-09

    申请号:US12350025

    申请日:2009-01-07

    IPC分类号: H05K1/14

    CPC分类号: H05K7/1407 Y10T74/20672

    摘要: An electronic plug-in module for accommodation in a module rack with a mounting rail, wherein the plug-in module includes a circuit board, a front plate and a mounting device, the mounting device comprises a bearing part, a tensioning part and a fixation element, the bearing part is fixed on front plate, and the tensioning part is connected frictionally to the fixation element and the bearing part in such a manner that a force, by means of which the plug-in module is held with its front plate in a defined position relative to the module rack, is exerted onto the plug-in module transversely to the insertion direction of the plug-in module.

    摘要翻译: 一种用于在具有安装轨道的模块架中容纳的电子插件模块,其中所述插入式模块包括电路板,前板和安装装置,所述安装装置包括轴承部分,张紧部分和固定件 元件,轴承部分固定在前板上,张紧部分以固定元件和轴承部件的摩擦方式连接,使得插入模块与其前板保持在一起 相对于模块架的限定位置横向于插件模块的插入方向施加到插入式模块上。

    Orthodontic device
    58.
    发明申请

    公开(公告)号:US20060172248A1

    公开(公告)日:2006-08-03

    申请号:US11319049

    申请日:2005-12-27

    IPC分类号: A61C3/00

    CPC分类号: A61C7/282 A61C7/287

    摘要: To create an orthodontic device with a base having a base surface for fixing the device to a tooth, and a slot for receiving an archwire, which is defined by a bottom surface and two side surfaces arranged on either side of the bottom surface and aligned in substantially parallel spaced relation to each other, and which extends in a substantially straight line through the base in the longitudinal direction of the base on a side thereof facing away from the base surface, and with a cover element for at least partially covering the open side of the slot facing the bottom surface, which is convertible and is easier to handle during the conversion, and which offers the wearer an increased degree of security, it is proposed that the side surfaces of the slot have a positively locking guide, which is aligned substantially parallel in relation to the longitudinal direction of the slot, and in which the cover element is slidably and detachably held on the base.

    Process for the production of sodium dichromate
    59.
    发明授权
    Process for the production of sodium dichromate 失效
    生产重铬酸钠的方法

    公开(公告)号:US5250274A

    公开(公告)日:1993-10-05

    申请号:US824682

    申请日:1992-01-21

    IPC分类号: C01G37/14 C01G37/00

    CPC分类号: C01G37/14

    摘要: The invention relates to a process for the production of sodium dichromate and sodium dichromate solutions by oxidative roasting of chrome ores under alkaline conditions, leaching of the furnace clinker obtained with water or an aqueous chromate-containing solution, adjustment of the pH to from 7 to 9.5, removal of the insoluble constituents by filtration, a sodium monochromate solution being obtained, conversion of the monochromate ions of this solution into dichromate ions by acidification and crystallization of sodium dichromate by concentration of this solution, characterized in that the acidification is carried out with carbon dioxide under pressure with removal of sodium hydrogen carbonate, the remaining solution is then very largely freed from sodium monochromate by cooling to a temperature below 10.degree. C. and filtration, any monochromate ions still present in the remaining solution are converted into dichromate ions by addition of an acid and the sodium monochromate filtered off is added to the sodium monochromate solution before conversion with carbon dioxide into a sodium dichromate solution.

    摘要翻译: 本发明涉及一种通过在碱性条件下对铬矿进行氧化焙烧生产重铬酸钠和重铬酸钠溶液的方法,用水或含铬酸盐水溶液浸取得到的炉渣,将pH调节至7至 9.5,通过过滤除去不溶性成分,得到单色钠溶液,通过浓缩该溶液酸化并重结晶重铬酸钠,将该溶液的单色离子转化为重铬酸根离子,其特征在于酸化是用 二氧化碳在压力下除去碳酸氢钠,剩余的溶液然后通过冷却到低于10℃的温度非常大地从单色钠中除去并过滤,剩余溶液中仍然存在的任何单色离子被转化成重铬酸根离子 加入酸和过滤的单色钠 在将二氧化碳转化成重铬酸钠溶液之前,将f加入到单色钠溶液中。

    Process for the preparation of chromic acid
    60.
    发明授权
    Process for the preparation of chromic acid 失效
    制备色素的方法

    公开(公告)号:US5181994A

    公开(公告)日:1993-01-26

    申请号:US625715

    申请日:1990-12-11

    CPC分类号: C25C1/10 C01G37/033 C25B1/22

    摘要: A process for the production of chromic acid, comprisinga) dissolving ferrochrome in sulphuric acid, optionally with the addition of catholyte and/or anolyte overflow from the electrolysis,b) removing undissolved constituents by filtration,c) adding a reducing agent in a quantity more than equivalent to the quantity of iron(III) and chromium(IV) in the solution,d) precipitating chromium(III) hydroxide by raising the pH to about 4-6 by the addition of a base while maintaining the reducing conditions in the solution,e) separating the precipitated chromium hydroxide while maintaining the reducing conditions,f) working up the aqueous solution containing iron by oxidation; precipitating iron(III) hydroxide or iron(III) oxide and optionally isolating the sulphate in the solution as sodium sulphate, ammonium sulphate or calcium sulphate,g) dissolving the separated chromium hydroxide in chromic acid and optionally sulphuric acid where either a single solution in chromic acid is produced or two solutions are produced, one in chromic acid and another in sulphuric acid,h) separating the solution(s) from undissolved constituents andi) employing the chromium hydroxide solution in chromic acid as anolyte in the electrolytic production of chromic acid in an electrolytic cell divided by a membrane, and either using the same solution as catholyte in the electrolytic cell divided by a membrane or using the chromium hydroxide solution in sulphuric acid as catholyte in the electrolytic cell divided by a membrane, hydrogen and/or metallic chromium being deposited electrolytically at the cathode and/or chromium(II) ions being produced electrolytically.

    摘要翻译: 一种生产铬酸的方法,包括:a)将铬铁溶解在硫酸中,任选地从电解中加入阴极电解液和/或阳极电解液溢出物,b)通过过滤除去未溶解的组分,c)加入一定量的还原剂 大于等于溶液中铁(III)和铬(IV)的量,d)通过加入碱将pH升高至约4-6,沉淀出氢氧化铬(III),同时保持其中的还原条件 e)在保持还原条件的同时分离沉淀的氢氧化铬,f)通过氧化处理含铁的水溶液; 沉淀氧化铁(III)或氧化铁(III),并任选地将溶液中的硫酸盐分离为硫酸钠,硫酸铵或硫酸钙,g)将分离的氢氧化铬溶解在铬酸和任选的硫酸中, 产生铬酸或产生两种溶液,一种在铬酸中,另一种在硫酸中,h)将溶液与未溶解的组分分离,以及i)在铬酸的电解生产中使用铬酸中的氢氧化铬溶液作为阳极电解液 在电解槽中除以膜,在电解槽中用阴离子电解液分隔膜或使用硫酸中的氢氧化铬溶液作为阴极电解液,在电解槽中被膜,氢和/或 阴极电解沉积的金属铬和/或电解产生的铬(II)离子。