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1.发明公开Process for the preparation of 2,4-dichlorophenoxyacetic acid 失效Verfahren zur Herstellung von 2,4-Dichlorphenoxyessigsäure。
公开(公告)号：EP0509518A1
公开(公告)日：1992-10-21
申请号：EP92106647.8
申请日：1992-04-16
发明人： Abbruzzese, Luigi
IPC分类号： C07C51/363
CPC分类号： C07C51/363 , C07C59/70
摘要： A process is described for the preparation of 2,4-dichlorophenoxyacetic acid consisting of the chlorination of phenoxyacetic acid with chlorine, at temperatures from 0°C to the boiling point of the reaction mixture, in a reaction medium composed of acetic acid.
摘要翻译： 描述了在由乙酸组成的反应介质中，在0℃至反应混合物的沸点的温度下，由苯氧基乙酸与氯氯化反应制备2,4-二氯苯氧基乙酸的方法。
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2.发明公开Process for removing cadmium from phosphoric acid streams 失效Verfahren zum Entfernen von镉ausphosphororsäurehaltigenLösungen。
公开(公告)号：EP0463674A2
公开(公告)日：1992-01-02
申请号：EP91201484.2
申请日：1991-06-14
发明人： Anania, Guido , Cultrera, Vito , Blanca, Domenico
IPC分类号： C22B3/24 , C01B25/238
CPC分类号： C01B25/238 , C01G11/003 , C22B3/24 , Y02P10/234
摘要： Cadmium is removed from phosphoric acid streams containing it by a process comprising initially treating the stream concerned with halide ions and metallic iron, followed by absorbing the resultant phosphoric solution on adsorption resin not of ion exchange type.
摘要翻译： 通过包括首先处理与卤素离子和金属铁相关的流，然后在不是离子交换型的吸附树脂上吸收所得磷酸溶液的方法，从含有它的磷酸流中除去镉。
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3.发明公开
公开(公告)号：EP0254361A1
公开(公告)日：1988-01-27
申请号：EP87201343.8
申请日：1987-07-14
摘要： A process is disclosed for the preparation of potassium nitrate by means of the reaction of nitric acid with potassium carbonate, wherein potassium carbonate is obtained by means of an electrochemical process.
摘要翻译： 公开了通过硝酸与碳酸钾的反应制备硝酸钾的方法，其中通过电化学方法获得碳酸钾。
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4.发明公开
公开(公告)号：EP0514902A1
公开(公告)日：1992-11-25
申请号：EP92108618.7
申请日：1992-05-21
发明人： Ognibeni, Mario, Dr. , Nardon, Danilo , Bassan, Fabio, Dr. , Silvestrin, Leonardo , Cocquio, Fabrizio, Dr.
IPC分类号： C07C273/02 , B01D53/34
CPC分类号： C07C273/02 , B01D53/58
摘要： Process for scrubbing by means of a liquid the ammonia contained in a vent (in particular the vents of plants for the synthesis and granulation of urea), wherein said liquid is an aqueous solution of urea neutralized with an acid, the pH of said neutralized solution being from 5.0 to 7.0.
摘要翻译： 用于通过液体包含在排气中的氨的手段（植物的通风口特别是用于合成和尿素的制粒）洗涤过程中，worin所述液体是尿素与酸中和的wässrige溶液中，所述中和的溶液的pH值 不同于5.0至7.0。
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公开(公告)号：EP0278562A3
公开(公告)日：1990-03-28
申请号：EP88200178.7
申请日：1988-02-03
IPC分类号： C07C275/02
CPC分类号： C07C273/02 , C05C5/04 , C05C9/00
摘要： Calcium-urea nitrate [Ca(NO₃)₂.4CO(NH₂)₂] is produced by means of a process, according to which:
- a liquid composition is prepared, at a temperature not higher than 170°C, which contains urea and calcium nitrate, in a molar ratio to each other equal to, or approximately equal to, 4/1, and having a water content comprised within the range of from 0 to 15% by weight;
- said liquid composition is sprayed, through a spray nozzle, on previously formed solid particles of calcium-urea nitrate, kept moving at a temperature comprised within the range of from 40 to approximately 100°C, and under a stream of an inert gas;
- calcium-urea nitrate is recovered from said solid products from the spray. The so obtained calcium-urea nitrate is in the form of a granular and free-flowing solid, free from the tendency to form dusts, and is useful in agriculture as a nitrogenous fertilizer. Also the suitable equipment for carrying out the process of calcium-urea nitrate preparation as a continuous process is disclosed.-
公开(公告)号：EP0161704A3
公开(公告)日：1988-06-22
申请号：EP85200559
申请日：1985-04-12
IPC分类号： C01B25/28
CPC分类号： C01B25/28
摘要： A process is disclosed for the production of water soluble ammonium phosphates, comprising the following steps:
a) to react in a reaction step ammonia and untreated phosphoric acid with P 2 0 5 concentration, comprised within the range of from 30 to 54% outcoming from wet processes; b) to filter under high temperature conditions the reaction suspension, separating the impurity-containing sludges from an aqueous solution of ammonium phosphate; c) to cool and crystallize the aqueous solution of ammonium phosphate; d) to separate the formed ammonium phosphate crystals from the mother liquors.-
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8.发明公开By-pass arrangement for controlling the return flow of a pilot valve connected into an irrigation network 失效用于控制连接到灌溉网络的导阀的返回流的旁路布置
公开(公告)号：EP0545495A3
公开(公告)日：1994-11-23
申请号：EP92203704.9
申请日：1992-12-01
发明人： Gazzoni, Adamo
CPC分类号： A01G25/165 , Y10T137/2544 , Y10T137/86413
摘要： A by-pass arrangement for controlling the return flow of a pilot valve is described, which by being connected between the outlet connection from the pilot valve and the return connection to the pilot valve eliminates the return circuit and enables said arrangement to be connected downstream to an open circuit network used for the pulsating delivery of an irrigation liquid.
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9.发明公开Process for producing calcium urea-nitrate 失效Verfahren zur Herstellung von Calciumnitrat-Harnstoff。
公开(公告)号：EP0278562A2
公开(公告)日：1988-08-17
申请号：EP88200178.7
申请日：1988-02-03
IPC分类号： C07C275/02
CPC分类号： C07C273/02 , C05C5/04 , C05C9/00
摘要： Calcium-urea nitrate [Ca(NO₃)₂.4CO(NH₂)₂] is produced by means of a process, according to which:
- a liquid composition is prepared, at a temperature not higher than 170°C, which contains urea and calcium nitrate, in a molar ratio to each other equal to, or approximately equal to, 4/1, and having a water content comprised within the range of from 0 to 15% by weight;
- said liquid composition is sprayed, through a spray nozzle, on previously formed solid particles of calcium-urea nitrate, kept moving at a temperature comprised within the range of from 40 to approximately 100°C, and under a stream of an inert gas;
- calcium-urea nitrate is recovered from said solid products from the spray.
The so obtained calcium-urea nitrate is in the form of a granular and free-flowing solid, free from the tendency to form dusts, and is useful in agriculture as a nitrogenous fertilizer.
Also the suitable equipment for carrying out the process of calcium-urea nitrate preparation as a continuous process is disclosed.摘要翻译： 通过以下方法制备硝酸钙/硝酸钙[Ca（NO 3）2.4 CO（NH 2）2]，其中： - 在不高于170℃的温度下制备液体组合物，其含有尿素和钙 硝酸盐，以相互摩尔比等于或约等于4/1，并且水含量在0至15重量％的范围内; - 所述液体组合物通过喷嘴喷雾在预先形成的硝酸钙的固体颗粒上，并保持在约40至约100℃的范围内并在惰性气体流下移动; - 从喷雾的所述固体产物中回收硝酸钙。 如此得到的尿素 - 硝酸铵是颗粒状和自由流动的固体的形式，没有形成粉尘的倾向，并且在作为氮肥的农业中是有用的。 还公开了用于进行硝酸钙 - 尿素制备工艺的合适设备作为连续方法。
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10.发明公开Process for the production of silicon tetrafluoride 失效Verfahren zur Herstellung von Silizium-Tetrafluorid。
公开(公告)号：EP0254349A2
公开(公告)日：1988-01-27
申请号：EP87201303.2
申请日：1987-07-08
IPC分类号： C01B33/107
CPC分类号： C01B33/10705
摘要： A continuous process is disclosed for the production, with a high yield, of high purity silicon tetrafluoride, by starting from an aqueous solution of fluosilicic acid, which comprises:
a) the reaction of an aqueous solution of fluosilicic acid with concentrated sulphuric acid, carried out with a short residence time and preferably under fluido-dynamic conditions of turbulence, inside a reaction zone;
b) the separation of a gaseous stream containing silicon tetrafluoride from a liquid stream of aqueous sulphuric acid, carried out inside a separation zone, directly connected with the reaction zone;
c) the washing, with concentrated and cold sulphuric acid, of said gaseous stream, carried out inside a washing zone, for the purpose of separating a gaseous stream of purified silicon tetrafluoride; and, possibly
d) the further purification of said gaseous stream of purified silicon tetrafluoride, by means of techniques of adsorption on an adsorbent solid material.摘要翻译： 公开了通过从氟硅酸的水溶液开始以高产率生产高纯度四氟化硅的连续方法，其包括：a）将氟硅酸水溶液与浓硫酸反应，携带 在反应区内，停留时间短，优选在流动动力条件下的湍流; b）从与反应区直接连接的分离区内部进行含有四氟化硅的气态物流与硫酸水溶液的分离; c）用浓缩和冷的硫酸洗涤在洗涤区内进行的所述气流，以分离纯化的四氟化硅的气流; 并且可能d）通过在吸附剂固体材料上的吸附技术进一步纯化所述纯化四氟化硅的气流。 Ø
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