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    Method for production of high purity silicon
    31.
    发明授权
    Method for production of high purity silicon 失效

    公开(公告)号：US06887448B2

    公开(公告)日：2005-05-03

    申请号：US10450125

    申请日：2001-11-21

    Applicant: Hans-Dieter Block ,  Leslaw Mleczko ,  Hans-Joachim Leimkühler ,  Rainer Weber ,  Knud Werner ,  Dietmar Schwanke ,  Johannes-Peter Schäfer ,  Gebhard Wagner

    Inventor： Hans-Dieter Block ,  Leslaw Mleczko ,  Hans-Joachim Leimkühler ,  Rainer Weber ,  Knud Werner ,  Dietmar Schwanke ,  Johannes-Peter Schäfer ,  Gebhard Wagner

    IPC: C01B33/029 ,  C01B33/039 ,  H01L31/18 ,  C01B33/02

    CPC classification number: C01B33/029 ,  C01B33/039 ,  H01L31/1804 ,  Y02E10/547 ,  Y02P20/127 ,  Y02P70/521

    Abstract: The invention relates to a method for the production of high purity silicon, characterized by the following steps: a) reaction of metallic silicon with silicon tetrachloride (SiCl4), hydrogen (H2) and hydrochloric acid (HCl) at a temperature of 500 to 800° C. and a pressure of 25 to 40 bar to give a trichlorosilane-containing (SiHCl3) feed gas stream, b) removal of impurities from the resultant trichlorosilane-containing feed gas stream by scrubbing with condensed chlorosilanes at a pressure of 25 to 40 bar and a temperature of 160 to 200° C. in a multi-stage distillation column, to give a purified trichlorosilane-containing feed gas stream and a solid-containing chlorosilane suspension and a distillative separation of the purified feed gas stream into a partial stream essentially comprising SiCl4 and a partial stream, essentially comprising SiHCl3, c) disproportionation of the SiHCl3-containing partial stream to give SiCl4 and SiH4, whereby the disproportionation is carried out in several reactive/distillative reaction zones, with a counter-current of vapour and liquid, on catalytic solids at a pressure of 500 mbar to 50 bar and SiHCl3 is introduced into a first reaction zone, the lower boiling SiH4-containing disproportionation product produced there undergoes an intermediate condensation in a temperature range of −25° C. to 50° C., the non-condensing SiH4-containing product mixture is fed to one or more further reactive/distillative reaction zones and the lower boiling product thus generated, containing a high proportion of SiH4 is completely or partially condensed in the head condenser and d) thermal decomposition of the SiH4 to give high purity silicon.

    Process for the preparation of sodium dichromate
    35.
    发明授权
    Process for the preparation of sodium dichromate 失效
    重铬酸钠的制备方法

    公开(公告)号：US5273735A

    公开(公告)日：1993-12-28

    申请号：US980142

    申请日：1992-11-23

    Applicant: Rainer Weber ,  Bernd Rosenow ,  Hans-Dieter Block ,  Norbert Lonhoff

    Inventor： Rainer Weber ,  Bernd Rosenow ,  Hans-Dieter Block ,  Norbert Lonhoff

    IPC: C01G37/14 ,  C25B1/28

    CPC classification number: C25B1/28 ,  C01G37/14

    Abstract: A process for the preparation of sodium dichromate and sodium dichromate solutions by alkaline oxidizing roasting of chromium ores, leaching resulting roast with water, adjustment of the pH to 7 to 9.5, removal of the insoluble constituents by filtration, a sodium monochromate solution containing 300 to 400 g/l of Na.sub.2 CrO.sub.4 being obtained, conversion of the monochromate ions of this solution into dichromate ions by addition of an acid and/or by electrolysis and/or by reaction with carbon dioxide under pressure and crystallization of sodium dichromate by concentration of this solution. The improvement wherein before the conversion into a sodium dichromate solution, the sodium monochromate solution is concentrated to contents of 700 to 1000 g/l of Na.sub.2 CrO.sub.4, the monochromatic ions, the solution is subsequently freed as far as possible from sodium sulphate by cooling to a temperature of below 0.degree. C. and filtration, and the residual monochromate ions which remain in the solution are converted into dichromate ions by electrolysis and/or by reaction with carbon dioxide and/or with chromic acid.

    Abstract translation: 一种通过碱性氧化焙烧铬矿石，用水浸泡，调节pH至7至9.5，通过过滤除去不溶成分的方法制备重铬酸钠和重铬酸钠溶液的方法，将含有300〜 获得400g / l的Na 2 CrO 4，通过加入酸和/或通过电解和/或通过与压力下的二氧化碳反应并通过浓缩该溶液使重结晶的重结晶，将该溶液的单色离子转化为重铬酸根离子 。 改进之前，在转化成重铬酸钠溶液之前，将单色钠溶液浓缩至700至1000g / l Na 2 CrO 4的含量，即单色离子，随后将溶液从硫酸钠中冷却至 温度低于0℃并过滤，留在溶液中的残留单色离子通过电解和/或通过与二氧化碳和/或与铬酸的反应转化为重铬酸根离子。

    Processes for the production of chlorine from hydrogen chloride and oxygen
    37.
    发明授权
    Processes for the production of chlorine from hydrogen chloride and oxygen 有权
    从氯化氢和氧气生产氯的方法

    公开(公告)号：US09447510B2

    公开(公告)日：2016-09-20

    申请号：US11749808

    申请日：2007-05-17

    Applicant: Rainer Weber ,  Jürgen Kintrup ,  Andreas Bulan ,  Friedhelm Kämper

    Inventor： Rainer Weber ,  Jürgen Kintrup ,  Andreas Bulan ,  Friedhelm Kämper

    IPC: C25B1/26 ,  C01B7/04

    CPC classification number: C25B1/26 ,  C01B7/04 ,  Y02P20/228

    Abstract: Processes for the production of chlorine by multi-stage oxidation, for example, by thermal reaction of hydrogen chloride with oxygen using catalysts or by non-thermal activated reaction of hydrogen chloride with oxygen, in which the gas mixture formed in the reaction, comprising the target products chlorine and water, unreacted hydrogen chloride and oxygen, and possibly other secondary constituents, such as carbon dioxide and nitrogen, (a) is cooled to condense hydrochloric acid as an aqueous solution of hydrogen chloride and (b) the aqueous solution of hydrogen chloride formed is separated from the gas mixture, characterised in that (c) the separated aqueous solution of hydrogen chloride is fed at least partially to an electrochemical oxidation in which at least part of the hydrogen chloride is oxidised to chlorine, (d) the chlorine gas occurring in step d) is optionally added to the gas mixture occurring in step c), (e) the residues of water present in the gas mixture from steps c) and e), in particular by washing with sulfuric acid, are removed, (f) the chlorine-rich gas mixture forming is freed of oxygen and optionally of secondary constituents.

    Abstract translation: 通过多级氧化生产氯的方法，例如通过使用催化剂的氯化氢与氧的热反应或通过氯化氢与氧的非热活化反应，其中反应中形成的气体混合物包含 目标产物氯和水，未反应的氯化氢和氧气，以及可能的其他二次成分如二氧化碳和氮气（a）被冷却以盐酸作为氯化氢水溶液冷凝，和（b）氢气水溶液 形成的氯化物与气体混合物分离，其特征在于（c）将分离的氯化氢水溶液至少部分进料至其中至少部分氯化氢被氧化成氯的电化学氧化，（d）氯 步骤d）中发生的气体任选地加入到步骤c）中发生的气体混合物中，（e）来自步骤c）a的气体混合物中存在的水的残留物 （e），特别是通过用硫酸洗涤，除去，（f）形成的富氯气体混合物不含氧气，任选地是二级成分。

    Damping element for an arrangement of a cylinder head of an internal combustion engine and an injection valve
    38.
    发明授权
    Damping element for an arrangement of a cylinder head of an internal combustion engine and an injection valve 有权
    用于内燃机和喷射阀的气缸盖的布置的阻尼元件

    公开(公告)号：US09347412B2

    公开(公告)日：2016-05-24

    申请号：US13704673

    申请日：2011-06-09

    Applicant: Jens Fath ,  Joachim Wagner ,  Rainer Weber ,  Marco Haller ,  Robert Kuchler

    Inventor： Jens Fath ,  Joachim Wagner ,  Rainer Weber ,  Marco Haller ,  Robert Kuchler

    IPC: F02M61/14 ,  F02M61/16

    CPC classification number: F02M61/16 ,  F02M61/14 ,  F02M2200/09 ,  F02M2200/858

    Abstract: A damping element implemented for damping a vibration transmitted between an injection valve and a cylinder head of an internal combustion engine may include a base body substantially shaped as a ring washer and at least one first contact segment fixedly coupled to the base body and protruding past the base body in a first axial direction and a second contact segment fixedly coupled to the base body and protruding past the base body in a second axial direction opposite the first axial direction. The first at least one contact segment has a radial offset from the longitudinal axis that is unequal to a radial offset of the second contact segment from the longitudinal axis.

    Abstract translation: 实现用于阻尼在内燃机的喷射阀和汽缸盖之间传递的振动的阻尼元件可以包括：基体，其基本上形状为环形垫圈;以及至少一个第一接触段，其固定地连接到基体并突出穿过 基体在第一轴向方向上固定，第二接触段固定地联接到基体并且在与第一轴向方向相反的第二轴向方向上突出穿过基体。 第一至少一个接触段具有与纵向轴线的径向偏移，其不等于第二接触段与纵向轴线的径向偏移。

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