公开(公告)号：US4567294A

公开(公告)日：1986-01-28

申请号：US684063

申请日：1984-12-20

申请人： Manfred Dressel ,  Heinrich Eberle ,  Willi Ripperger ,  Wolfgang Ruehenbeck ,  Werner Zwick

发明人： Manfred Dressel ,  Heinrich Eberle ,  Willi Ripperger ,  Wolfgang Ruehenbeck ,  Werner Zwick

IPC分类号： C01B21/12 ,  C01C1/00 ,  C07C125/02

CPC分类号： C01B21/12 ,  C01C1/00

摘要： In the preparation of ammonium carbamate by reacting ammonia with carbon dioxide, the reactants are introduced into a layer of ammonium carbamate which is kept in the fluidized state by gaseous ammonia or carbon dioxide. The temperature is kept below 25.degree. C. by removing the heat of reaction.

摘要翻译： 在通过氨与二氧化碳反应制备氨基甲酸铵时，将反应物引入氨基甲酸铵层中，氨基甲酸铵通过气态氨或二氧化碳保持在流化状态。 通过除去反应热量将温度保持在25℃以下。

公开(公告)号：US20070015919A1

公开(公告)日：2007-01-18

申请号：US11179368

申请日：2005-07-12

申请人： Willi Ripperger

发明人： Willi Ripperger

IPC分类号： C07D251/62

CPC分类号： C07D251/60 ,  C07D251/62

摘要： Process for cooling and crystallizing solid melamine from the gaseous phase or from melamine melts as they develop in technical processes used to produce melamine, characterized in that the melamine-containing process gases or melamine melts are introduced into a liquid, organic phase at high pressure, said phase comprising polyvalent alcohols such as ethylene glycol, glycerine or their homologous series or of amines such as ethanol amines. Mixtures of both groups of compounds are suitable as well. The advantage of this process is that the hot melamine is cooled very quickly without forming thermal decomposition products and that during quenching no reaction of the melamine with the solvent occurs as in the case with a water quench. Additionally not only the formation of higher deammonation products such as melam and melem is prevented while reducing the pressure from the reactor, but also higher deammonation products of the melamine possibly still contained in the melt, such as melam and melem, are partially converted back into melamine.

摘要翻译： 在用于生产三聚氰胺的技术方法中发展时，从气相或三聚氰胺熔化物中冷却和结晶固体三聚氰胺的方法，其特征在于将含三聚氰胺的工艺气体或三聚氰胺熔体在高压下引入液体有机相， 所述相包含多元醇如乙二醇，甘油或它们的同系物或胺如乙醇胺。 两组化合物的混合物也是合适的。 该方法的优点是热三聚氰胺非常快速地冷却而不形成热分解产物，并且在淬火期间，不会发生三聚氰胺与溶剂的反应，如在骤冷的情况下。 另外，不仅在减少反应器的压力的同时防止形成较高的脱甲基产物，例如二聚氰胺和蜜胺，而且还可能含有熔融物（例如二聚氰胺和蜜胺）中的三聚氰胺的较高的脱氨产物被部分转化回 三聚氰胺

公开(公告)号：US06858730B2

公开(公告)日：2005-02-22

申请号：US10380305

申请日：2001-09-06

申请人： Willi Ripperger

发明人： Willi Ripperger

IPC分类号： B01J8/00 ,  B01J8/02 ,  C07D251/62

CPC分类号： B01J8/02 ,  B01J8/0005 ,  C07D251/62

摘要： A method for purifying melamine comprising impurities like ureido-melamine, oxotriazines, melam, melem, comprises the step of putting into contact at a temperature comprised between 340° C. and 410° C. and at a pressure comprised between 8 and 17 MPa a melamine melt with a bed of a catalyst thus obtaininig melamine with a purity of at least 99%.

摘要翻译： 一种净化含有诸如脲基 - 三聚氰胺，氧代三嗪，蜜胺，蜜胺等杂质的三聚氰胺的方法包括以下步骤：在340℃至410℃之间的温度和8至17MPa压力之间进行接触 三聚氰胺与催化剂床熔融，从而获得纯度至少为99％的三聚氰胺。

公开(公告)号：US07153962B1

公开(公告)日：2006-12-26

申请号：US11179368

申请日：2005-07-12

申请人： Willi Ripperger

发明人： Willi Ripperger

IPC分类号： C07D251/62 ,  C07D251/60

CPC分类号： C07D251/60 ,  C07D251/62

摘要： Process for cooling and crystallizing solid melamine from the gaseous phase or from melamine melts as they develop in technical processes used to produce melamine, characterized in that the melamine-containing process gases or melamine melts are introduced into liquid, organic phase at high pressure, said phase comprising polyvalent alcohols such as ethylene glycol, glycerine or their homologous series or of amines such as ethanol amines or a mixture of both groups. The advantage this process is that the hot melamine is cooled very quickly without forming thermal decomposition products and that during quenching no reaction of the melamine with the solvent occurs, the formation of higher deammoniation products such as melam and melem is prevented and higher deammoniation products of the melamine such as melam and melem, are partially converted back into melamine.

摘要翻译： 在用于生产三聚氰胺的技术过程中发展时，从气相或三聚氰胺熔体中冷却和结晶固体三聚氰胺的方法，其特征在于将含三聚氰胺的工艺气体或三聚氰胺熔体在高压下引入液体有机相中，所述方法 包括多元醇如乙二醇，甘油或它们的同系物或胺如乙醇胺或两组的混合物。 该方法的优点是热三聚氰胺非常快速地冷却而不形成热分解产物，并且在淬灭期间不会发生三聚氰胺与溶剂的反应，防止形成较高的脱氨产物如蜜胺和蜜胺，并且更高的脱氨产物 三聚氰胺如蜜蜜和蜜，素被部分转化成三聚氰胺。

公开(公告)号：US4009125A

公开(公告)日：1977-02-22

申请号：US599524

申请日：1975-07-28

申请人： Herbert Geierhaas ,  Willi Ripperger ,  Walter Herrmann

发明人： Herbert Geierhaas ,  Willi Ripperger ,  Walter Herrmann

IPC分类号： B01J21/04 ,  B01J23/88 ,  B01J37/00 ,  C10G45/08

CPC分类号： B01J37/0063 ,  B01J23/88 ,  B01J23/882 ,  B01J37/0009 ,  B01J37/0045 ,  B01J21/04 ,  C10G2300/107

摘要： Spherical refining catalysts containing cobalt and/or nickel together with molybdenum on aluminum oxide are prepared in closed mixers provided with mixing elements from spray-dried powders such as catalyst preparations or carriers using peptizing agents. The catalysts thus prepared have a bulk density much higher than that of extrudates of similar composition. Their surface and pore size distribution make them suitable for use in the catalytic refining of hydrocarbon fractions containing metal and asphalt, and particularly for refining vacuum distillates and residues from atmospheric distillation.

摘要翻译： 含有钴和/或镍与氧化铝上的钼的球形精炼催化剂在密封混合器中制备，该混合器具有来自喷雾干燥粉末如催化剂制剂或使用胶溶剂的载体的混合元件。 如此制备的催化剂的堆积密度远高于类似组成的挤出物。 它们的表面和孔径分布使其适用于含有金属和沥青的烃馏分的催化精炼，特别是用于精制真空馏出物和常压蒸馏残留物。

公开(公告)号：US3960768A

公开(公告)日：1976-06-01

申请号：US486059

申请日：1974-07-05

申请人： Willi Ripperger ,  Willi Oettinger ,  Rudolf Kaiser ,  Klaus Pfitzner ,  Richard Adolf Palm

发明人： Willi Ripperger ,  Willi Oettinger ,  Rudolf Kaiser ,  Klaus Pfitzner ,  Richard Adolf Palm

IPC分类号： B01J20/281 ,  B01J21/18 ,  C01B31/08 ,  B01J31/10

CPC分类号： G01N30/48 ,  B01J20/281 ,  C01B31/085 ,  B01J2220/54

摘要： Hard abrasion-resistant carbon is obtained from polymerized halohydrocarbons by elimination of hydrogen halide in a two-stage process carried out so that in the first decomposition stage, which is carried out at temperatures within the range from 140.degree. to 250.degree.C, a definite amount (not less than 5% by weight and not more than 50% by weight) of the total amount of hydrogen halide capable of being split off is removed. Appropriately shaped end products can be obtained by using raw materials having a globular, cylindrical or other shape. The carbon obtained is suitable as the stationary phase for chromatographic separation and analysis of mixtures.

摘要翻译： 通过在两步法中消除卤化氢从聚合的卤代烃获得硬耐磨碳，使得在140℃至250℃的温度下进行的第一分解阶段中，确定的 除去能够分离的卤化氢总量的量（不低于5重量％且不大于50重量％）。 可以通过使用具有球状，圆柱形或其它形状的原料来获得适当形状的最终产品。 所得碳适合作为固定相进行色谱分离和混合物分析。