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26 条记录 (耗时 0.019 秒)

    Preparation of pourable choline chloride/silica powders
    3.
    发明授权
    Preparation of pourable choline chloride/silica powders 失效
    可浇注氯化胆碱/二氧化硅粉末的制备

    公开(公告)号：US4775540A

    公开(公告)日：1988-10-04

    申请号：US33849

    申请日：1987-04-03

    申请人： Otto Hertel ,  Gerhard Jeschek ,  Walter Klink ,  Wolfgang Koernig ,  Theodor Weber ,  Fritz Rateike

    发明人： Otto Hertel ,  Gerhard Jeschek ,  Walter Klink ,  Wolfgang Koernig ,  Theodor Weber ,  Fritz Rateike

    IPC分类号： A23K1/00 ,  A23K1/16 ,  A61K9/14 ,  A23K1/175

    CPC分类号： A61K9/143 ,  A23K20/174 ,  A23K40/10 ,  A61K9/145 ,  Y10S426/807

    摘要： A process for the preparation of pourable choline chloride/silica powders by mixing silica with choline chloride and, where appropriate, drying this mixture, wherein spray-dried or fluidized bed-dried silica which has a particle size of from 30 to 250 .mu.m is mixed with an aqueous choline chloride solution which contains from 70 to 80% by weight, based on the solution, of choline chloride and is at from 40.degree. to 80.degree. C., thereafter from 0.05 to 0.4% by weight, based on the mixture, of magnesium stearate or calcium stearate is added and, if appropriate, the resulting mixture is dried.

    摘要翻译： 通过将二氧化硅与氯化胆碱混合并适当地干燥该混合物来制备可倾倒的氯化胆碱/二氧化硅粉末的方法，其中具有30至250μm的粒度的喷雾干燥或流化床干燥的二氧化硅是 与氯化胆碱氯化物溶液混合，该溶液含有70至80重量％的氯化胆碱溶液，为40-80℃，其后为0.05至0.4重量％，基于混合物 ，硬脂酸镁或硬脂酸钙，如果合适，将所得混合物干燥。

    Method for avoiding corrosion
    6.
    发明授权
    Method for avoiding corrosion 有权
    避免腐蚀的方法

    公开(公告)号：US07309403B2

    公开(公告)日：2007-12-18

    申请号：US10572783

    申请日：2004-09-24

    申请人： Werner Reutemann ,  Theodor Weber ,  Karl-Heinz Ross ,  Manfred Julius

    发明人： Werner Reutemann ,  Theodor Weber ,  Karl-Heinz Ross ,  Manfred Julius

    IPC分类号： B01D3/38 ,  B01D3/40 ,  C07C209/86 ,  C07C209/90

    CPC分类号： C07C211/04 ,  C07C209/86 ,  Y10S203/20 ,  Y10S203/24

    摘要： The invention relates to a method of avoiding corrosion in the separation of methylamine from a product stream (10) which is obtained in the preparation of methylamines by gas-phase reaction of methanol and ammonia and includes monomethylamine, dimethylamine, trimethylamine, ammonia and methanol as components, where ammonia is separated off by pure distillation in a first column (1), the remaining components of the product stream obtained as bottoms (12) are fed to a second column (2). Trimethylamine (14) is separated off in the second column (2) by extractive distillation with introduction of water. The further of the product stream obtained as bottoms (15) from the second column (2) are fed to a third column (3), in which monomethylamine and dimethylamine are separated off at the top. The monomethylamine and dimethylamine are separated by distillation in a fourth column (4). To avoid corrosion alkali metal hydroxide is added to the second or third column (3).

    摘要翻译： 本发明涉及一种避免在甲醇与甲醇与氨的气相反应制备甲胺中得到的产物流（10）中分离甲胺的腐蚀方法，包括一甲胺，二甲胺，三甲胺，氨和甲醇 组分，其中在第一塔（1）中通过纯蒸馏分离氨，将作为塔底物（12）获得的产物流的剩余组分进料至第二塔（2）。 通过萃取蒸馏引入三水胺（14）在第二塔（2）中分离。 从第二塔（2）获得的作为塔底物（15）获得的产物流的其它组分进料到第三塔（3），其中一甲胺和二甲胺在顶部分离。 在第四列（4）中通过蒸馏分离一甲胺和二甲胺。 为了避免腐蚀，将碱金属氢氧化物加入到第二或第三塔（3）中。

    Method for avoiding corrosion
    7.
    发明申请
    Method for avoiding corrosion 有权
    避免腐蚀的方法

    公开(公告)号：US20060243584A1

    公开(公告)日：2006-11-02

    申请号：US10572783

    申请日：2004-09-24

    申请人： Werner Reutemann ,  Theodor Weber ,  Karl-Heinz Ross ,  Manfred Julius

    发明人： Werner Reutemann ,  Theodor Weber ,  Karl-Heinz Ross ,  Manfred Julius

    IPC分类号： B01D3/34

    CPC分类号： C07C211/04 ,  C07C209/86 ,  Y10S203/20 ,  Y10S203/24

    摘要： The invention relates to a method of avoiding corrosion in the separation of methylamine from a product stream (10) which is obtained in the preparation of methylamines by gas-phase reaction of methanol and ammonia and comprises monomethylamine, dimethylamine, trimethylamine, ammonia and methanol as components, where ammonia is separated off by pure distillation in a first column (1), the remaining components of the product stream obtained as bottoms (12) are fed to a second column (2). Trimethylamine (14) is separated off in the second column (2) by extractive distillation with introduction of water. The further components of the product stream obtained as bottoms (15) from the second column (2) are fed to a third column (3), in which monomethylamine and dimethylamine are separated off at the top. The monomethylamine and dimethylamine are separated by distillation in a fourth column (4). To avoid corrosion alkali metal hydroxide is added to the second or third column (3).

    摘要翻译： 本发明涉及一种避免在从甲醇和氨气相反应制备甲胺中得到的产物流（10）中甲胺分离腐蚀的方法，包括一甲胺，二甲胺，三甲胺，氨和甲醇 组分，其中在第一塔（1）中通过纯蒸馏分离氨，将作为塔底物（12）获得的产物流的剩余组分进料至第二塔（2）。 通过萃取蒸馏引入三水胺（14）在第二塔（2）中分离。 从第二塔（2）获得的作为塔底物（15）获得的产物流的其它组分进料到第三塔（3），其中一甲胺和二甲胺在顶部分离。 在第四列（4）中通过蒸馏分离一甲胺和二甲胺。 为了避免腐蚀，将碱金属氢氧化物加入到第二或第三塔（3）中。

    Method for Controlling the Reactor Admission Temperature During the Production of Methylamine
    9.
    发明申请
    Method for Controlling the Reactor Admission Temperature During the Production of Methylamine 有权
    控制甲胺生产过程中反应器进口温度的方法

    公开(公告)号：US20070270614A1

    公开(公告)日：2007-11-22

    申请号：US10573185

    申请日：2004-09-24

    申请人： Werner Reutemann ,  Rolf Wambsganss ,  Frank Poplow ,  Theodor Weber ,  Karl-Heinz Ross ,  Manfred Julius

    发明人： Werner Reutemann ,  Rolf Wambsganss ,  Frank Poplow ,  Theodor Weber ,  Karl-Heinz Ross ,  Manfred Julius

    IPC分类号： C07C209/14

    CPC分类号： C07C209/16 ,  C07C211/04

    摘要： The invention relates to a process for preparing methylamines by gas-phase reaction of methanol and ammonia as starting materials at a pressure in the range from 15 to 30 bar in the presence of heterogeneous catalyst. The starting materials are vaporized in one or more heat exchangers (1, 2, 3), superheated to produce a feed gas stream and subsequently fed into a reactor (4), with the mixing of the starting materials being able to be carried out in the feed stream to one of the heat exchangers (1, 2, 3) or at any desired position in a heat exchanger (1, 2, 3). A product gas stream comprising monomethylamine, dimethylamine and trimethylamine and also reaction by-products is taken off from the reactor (4). To control the reactor inlet temperature of the starting materials to a temperature in the range from 360° C. to 370° C., all or some of the feed gas stream or the product gas stream is passed through an adjustable valve (5) in order to vary the pressure and thus the condensation temperature.

    摘要翻译： 本发明涉及通过甲醇和氨作为起始原料在非均相催化剂存在下在15至30巴的压力下气相反应制备甲胺的方法。 起始材料在一个或多个热交换器（1,2,3）中蒸发，过热以产生进料气流，并随后进料到反应器（4）中，原料的混合能够进行 到一个热交换器（1,2,3）或在热交换器（1,2,3）中的任何期望位置的进料流。 从反应器（4）中取出包含一甲胺，二甲胺和三甲胺以及反应副产物的产物气流。 为了将原料的反应器入口温度控制在360℃至370℃的温度范围内，所有或一些进料气流或产物气流通过可调节阀（5），其中 以改变压力，从而改变冷凝温度。

    Method for producing acid chlorides
    10.
    发明授权
    Method for producing acid chlorides 有权
    生产酰氯的方法

    公开(公告)号：US06770783B1

    公开(公告)日：2004-08-03

    申请号：US10070864

    申请日：2002-03-12

    申请人： Ralph Busch ,  Heinz-Josef Kneuper ,  Theodor Weber ,  Winfried Müller ,  Armin Stamm ,  Jochem Henkelmann

    发明人： Ralph Busch ,  Heinz-Josef Kneuper ,  Theodor Weber ,  Winfried Müller ,  Armin Stamm ,  Jochem Henkelmann

    IPC分类号： C07C5158

    CPC分类号： C07C51/64 ,  C07C51/60

    摘要： The invention relates to a method for producing acid chlorides by converting carboxylic acids with carbon oxychlorides or thionyl chloride in the presence of a catalyst adduct of an N,N-disubstituted formamide of general formula (I) and carbon oxychloride or thionyl chloride. In the formula, R1 and R2, independently from one another, mean C1- to C4-alkyl or R1 and R2 together mean a C4- or C5-alkylene chain. According to the inventive method, hydrogen chloride is added during and/or after the conversion.

    摘要翻译： 本发明涉及在通式（I）的N，N-二取代甲酰胺与碳酰氯或亚硫酰氯的催化剂加合物存在下，用碳氧氯化物或亚硫酰氯转化羧酸制备酰氯的方法。 在该式中，R 1和R 2彼此独立地表示C 1至C 4 - 烷基或R 1和R 2一起表示C 4 - 或C 5-亚烷基链。 根据本发明的方法，在转化期间和/或之后加入氯化氢。