公开(公告)号：US5039643A

公开(公告)日：1991-08-13

申请号：US550746

申请日：1990-07-10

申请人： Christian Hecht ,  Peter Panster ,  Friedrich Bittner ,  Petra Look-Herber

发明人： Christian Hecht ,  Peter Panster ,  Friedrich Bittner ,  Petra Look-Herber

IPC分类号： B01J23/40 ,  B01J27/24 ,  B01J37/02 ,  C01C3/02

CPC分类号： B01J37/0215 ,  B01J23/40 ,  B01J27/24 ,  C01C3/0229

摘要： A method for the production of catalytically active coatings on shaped articles of aluminum oxide for the production of hydrogen cyanide according to the BMA method. A suspension is used for the coating which suspension contains at least one platinum metal and aluminum in finely divided elementary form in a carrier liquid. According to especially preferred embodiments, the suspension additionally contains glass frits or organic silicon compounds. After the moistening of the shaped article and evaporation of the carrier liquid, the catalyst is formed during heating to 1000.degree. to 1350.degree. C. in the presence of nitrogen and/or ammonia.Essential advantages of the method over the previously known method of coating with solutions of Pt and Al compounds are: the application of different coating thicknesses are possible in a single coating stage, the previously-necessary hydrogenation stage after each impregnation is eliminated and the health risk is reduced.

摘要翻译： 根据BMA方法生产氰化氢的成型制品上的催化活性涂层的方法。 悬浮液用于涂层，该悬浮液在载体液体中含有至少一种细金属元素形式的铂金属和铝。 根据特别优选的实施方案，悬浮液另外含有玻璃料或有机硅化合物。 在成型制品的润湿和载液的蒸发之后，在氮和/或氨的存在下加热至1000℃至1350℃期间形成催化剂。 该方法相对于先前已知的Pt和Al化合物溶液涂布方法的重要优点是：在单一涂层阶段可以应用不同的涂层厚度，每次浸渍后先前必要的氢化步骤被消除，并且健康风险 降低了。

公开(公告)号：US5560896A

公开(公告)日：1996-10-01

申请号：US457435

申请日：1995-06-01

申请人： Martin Bewersdorf ,  Claas-Jurgen Klasen ,  Petra Look-Herber ,  Birgit Bertsch-Frank ,  Thomas Lieser ,  Klaus Muller

发明人： Martin Bewersdorf ,  Claas-Jurgen Klasen ,  Petra Look-Herber ,  Birgit Bertsch-Frank ,  Thomas Lieser ,  Klaus Muller

IPC分类号： B01D1/20 ,  B01J2/04 ,  B01J2/16 ,  B05B7/06 ,  C01B15/10 ,  C01B31/24

CPC分类号： B01D1/20 ,  B01J2/04 ,  B01J2/16 ,  B05B7/061 ,  C01B15/103

摘要： Sodium percarbonate is produced by means of fluidized bed granulation. The process includes spraying an aqueous sodium carbonate solution and a hydrogen peroxide solution onto nuclei in a fluidized bed and evaporating the water. In the process of the invention, it is not necessary to use a phosphorus-containing crystallization inhibitor in order to avoid cloggings and incrustations in and on the nozzle. This is accomplished by spraying the solutions through separate channels in a single ternary atomizer nozzle, to provide external mixing of the solutions with respect to the nozzle.

摘要翻译： 过碳酸钠是通过流化床造粒生产的。 该方法包括将碳酸钠水溶液和过氧化氢溶液喷洒在流化床中的核上并蒸发水。 在本发明的方法中，不需要使用含磷结晶抑制剂，以避免喷嘴内和喷嘴上的堵塞和结垢。 这是通过在单个三元雾化器喷嘴中通过单独的通道喷射溶液来实现的，以提供溶液相对于喷嘴的外部混合。