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1.发明授权
公开(公告)号：US4434148A
公开(公告)日：1984-02-28
申请号：US81555
申请日：1979-10-03
IPC分类号： B01D53/68 , C01C3/00 , C07D251/28 , C01B21/18
CPC分类号： C01C3/004 , C07D251/28
摘要： The residual gases obtained in the production of cyanuric chloride having a pressure of 1-5 bar (absolute) preferably 1-4 bar, are worked up by leading them into the lower portion of a column, reacted in the column with at least the equivalent amount of hydrogen cyanide to form cyanogen chloride and led in countercurrent flow to the water charged to the upper portion of the column whereupon the aqueous solution of cyanogen chloride formed is withdrawn from the lower portion of the column and preferably is returned into the production portion of the plant for recovery of the cyanogen chloride while the purified waste gas of the column leaves in the upper portion of the column.
摘要翻译： 在生产具有1-5巴（绝对）压力优选1-4巴的压力的氰尿酰氯中获得的残余气体通过将它们引入塔的下部来处理，在塔中反应至少具有相当于 氰化氢的量以形成氯化氰，并且逆流地流向加到塔上部的水，由此形成的氯化氢水溶液从柱的下部排出，优选返回到 用于回收氯化氰的设备，而塔的净化废气在塔的上部离开。
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公开(公告)号：US3957950A
公开(公告)日：1976-05-18
申请号：US346789
申请日：1973-04-02
CPC分类号： C01B7/01
摘要： Side reactions in the use of gaseous chlorine are avoided by leading the chlorine containing at least 0.0001% of non-volatile compounds such as ferric chloride over silica gel, glass wool, pumice or montmorillonite. Preferably the thus treated chlorine is passed through hexachlorobutadiene or perfluorokerosene in a second absorption step. Ferric chloride can also be removed from the chlorine gas by treating with sulfuric acid.
摘要翻译： 通过在硅胶，玻璃棉，浮石或蒙脱石上引入含有至少0.0001％的非挥发性化合物如氯化铁的氯来避免使用气态氯的副反应。 优选地，如此处理的氯在第二吸收步骤中通过六氯丁二烯或全氟代烯烃。 氯化铁也可以通过用硫酸处理从氯气中除去。
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公开(公告)号：US3961023A
公开(公告)日：1976-06-01
申请号：US540706
申请日：1975-01-13
CPC分类号： C01C3/004 , B01D53/1493 , C01B7/01
摘要： Cyanogen chloride and hydrogen chloride are produced by reacting hydrogen cyanide and chlorine, separating from the gaseous mixture on the one hand hydrogen chloride and on the other hand cyanogen chloride which in a given case can also contain chlorine, by absorption in a halohydrocarbon which has a boiling point between that of cyanogen chloride and cyanuric chloride and after distillative separation of the dissolved cyanogen chloride-chlorine mixture returning the solvent to the absorption column, the process includesA. adding as the solvent for the absorption a trifluoromethyl substituted aromatic hydrocarbon or halohydrocarbon or a mixture of such trifluoromethyl substituted aromatic hydrocarbons or halohydrocarbons,B. subjecting the gas mixture consisting of cyanogen chloride, hydrogen chloride and in a given case chlorine after leaving the reactor for the chlorination of hydrogen cyanide and before entrance into the absorption column to a pretreatment with the solvents set forth under (a) at a temperature between 80.degree.C. and the boiling point of the solvent and/orC. either converting the N-chloro-chloroformimide chloride formed in small amounts from the chlorine and cyanogen chloride in the course of the absorption and distillation into the insoluble chloroformimide chloride hydrochloride by gassing the solvent with hydrogen chloride and separating the insoluble hydrochloride in conventional manner and/or withdrawing the N-chloro-chloroformimide together with some cyanogen chloride and solvent of the previously named distillation column for separation of the cyanogen chloride by means of a side outlet, and in a second subsequently provided distillation column separating into solvent and pure N-chloro-chloroformimide chloride, whereby then the latter can be conducted both into the cyanogen chloride reactor and also, if connected to a plant for the production of cyanuric chloride, into the trimerization reactor for cyanogen chloride and/orD. subjecting the solvent contaminated with byproducts by the suspension resulting from the pretreatment and/or accumulating in the sump of the distillation column for the separation of the cyanogen chloride completely or in a partial stream to an aqueous alkaline treatment or in combination with a cyanuric chloride condensation plant leading the suspension formed in the pretreatment to the cyanuric chloride condensation column.
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公开(公告)号：US3947552A
公开(公告)日：1976-03-30
申请号：US530611
申请日：1974-12-06
IPC分类号： C07D251/28 , B01D15/00 , B01D53/02 , B01D53/26 , B01J19/00 , B01J20/18 , C01C3/00 , C01B21/18
摘要： Cyanogen chloride is purified and the service life of activated carbon is increased in the subsequent trimerization of the cyanogen chloride to cyanuric chloride by process comprising reacting hydrogen cyanide with chlorine, in a given case in the presence of cyanogen chloride produced in the presence of water, which in a given case contains chlorine. The improvement comprises passing the cyanogen chloride over granular commercial sodium aluminum silicate or a molecular sieve of the mordenite type, at 20.degree.-100.degree.C., preferably 30.degree.-60.degree.C.
摘要翻译： 纯化氰化氯，随后在氰化氢与氰尿酰氯的三聚反应中活性炭的使用寿命增加，包括使氰化氢与氯反应，在给定的情况下，在存在水的情况下生成的氯化氰， 在给定的情况下，含氯。 改进之处在于将氰化氯通过粒状商业硅酸铝钠或丝光沸石型分子筛在20℃-100℃，优选30℃-60℃下进行。
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公开(公告)号：US3949060A
公开(公告)日：1976-04-06
申请号：US530612
申请日：1974-12-06
IPC分类号： C07D251/28 , B01D15/00 , B01D53/02 , B01D53/28 , B01J19/00 , B01J20/08 , C01C3/00 , C01B21/18
摘要： Cyanogen chloride is purified and the service life of activated carbon is increased in the subsequent trimerization of the cyanogen chloride to cyanuric chloride by process comprising reacting hydrogen cyanide with chlorine, in a given case in the presence of cyanogen chloride produced in the presence of water, which in a given case contains chlorine. The improvement comprises passing the cyanogen chloride over granular gamma aluminum oxide with an alkali metal or in a given case an alkaline earth metal content of 0 to 3 weight % at 20.degree.-100.degree.C., preferably 30.degree.-60.degree.C.
摘要翻译： 纯化氰化氯，随后在氰化氢与氰尿酰氯的三聚反应中活性炭的使用寿命增加，包括使氰化氢与氯反应，在给定的情况下，在存在水的情况下生成的氯化氰， 在给定的情况下，含氯。 改进之处在于使用氯化铵在含有碱金属的颗粒状γ氧化铝上，或者在给定的情况下，在20℃-100℃，优选30℃-60℃下使碱土金属含量为0-3％（重量）。
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6.发明授权
公开(公告)号：US4046862A
公开(公告)日：1977-09-06
申请号：US684352
申请日：1976-05-07
申请人： Werner Heimberger , Gerd Schreyer
发明人： Werner Heimberger , Gerd Schreyer
CPC分类号： C01C3/004 , Y02P20/584
摘要： Cyanogen chloride or cyanogen bromide is prepared by reaction of hydrogen cyanide with hydrogen chloride or hydrochloric acid (or hydrogen bromide or hydrobromic acid) and hydrogen peroxide in aqueous medium in the presence of cupric and ferric ions under superatmospheric pressure, preferably between 1.5 and 16 bar, and the cyanogen chloride (or cyanogen bromide) recovered separated from oxygen and nitrogen. In a preferred form of the invention, the hydrogen chloride or hydrochloric acid is either partially or entirely formed directly in the recycling catalyst solution of cupric and ferric ions by reaction of chlorine and hydrogen cyanide, either with or without pressure.
摘要翻译： 在高于大气压下，优选在1.5至16巴之间，在铜和铁离子存在下，将氰化氢与氯化氢或盐酸（或溴化氢或氢溴酸）和过氧化氢在水介质中反应制备氯化氰或溴化氰 ，并从氧和氮分离回收的氯化氰（或溴化氰）。 在本发明的优选形式中，氯化氢或盐酸通过氯气和氰化氢的反应，在或不加压力下，直接在铜和铁离子的再循环催化剂溶液中部分或完全形成。
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公开(公告)号：US4038276A
公开(公告)日：1977-07-26
申请号：US716353
申请日：1976-08-20
IPC分类号： C07D251/28
CPC分类号： C07D251/28
摘要： Finely divided solid cyanuric chloride is produced by feeding a jet of liquid cyanuric chloride into a separatory container, cooling the liquid cyanuric chloride with recycling inert gases to such an extent that the cyanuric chloride is separated in crystalline form, washing the thereby warmed cyanuric chloride vapor or dust containing gases free of cyanuric chloride in countercurrent flow with an inert liquid that is a good solvent for cyanuric chloride in a washing column connected to the outlet side of the separatory column, thus simultaneously cooling the gases, and subsequently again returning the gases to the separatory container, while the temperature of the cyanuric chloride containing washing liquid which has increased in the washing process is again brought to the original temperature by leading it in the cycle over a heat exchanger and spraying the inside of the pipe connected to the separatory container and leading to the washing column constantly with the washing liquid while dividing a partial stream of the cyanuric chloride containing washing liquid in a distillation column into pure liquid cyanuric chloride which is recycled into the separatory column and into pure washing liquid which is recycled into the washing column.
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公开(公告)号：US4328010A
公开(公告)日：1982-05-04
申请号：US174180
申请日：1980-07-31
申请人： Friedrich Bittner , Werner Heimberger , Kurt Henkel , Norbert Kriebitzsch , Martin Petzold , Kurt Puschner
发明人： Friedrich Bittner , Werner Heimberger , Kurt Henkel , Norbert Kriebitzsch , Martin Petzold , Kurt Puschner
摘要： To obtain a cyanogen chloride which is practically free from water and preferably also free from hydrogen cyanide, hydrogen chloride and organic compounds, the crude cyanogen chloride is fractionally distilled. The return is led in countercurrent flow to the crude gas, thereby takes up the impurities and is further evaporated in the lower portion of the column, respectively in a special apparatus, by a liquid whose temperature is higher than the boiling temperature of cyanogen chloride. Thereby this liquid also takes up the impurities. The purification action is aided by a wash for the crude cyanogen chloride connected in series before it enters the fractionating column. It is very advantageous to combine the process with a plant for the production of cyanogen chloride.
摘要翻译： 为了获得实际上不含水的氰氯化物，优选也不含氰化氢，氯化氢和有机化合物，分馏了粗氯化氰。 回流以逆流流向粗气体，从而占据杂质，并在专用设备中通过温度高于氯化氰沸点的液体分别在塔的下部蒸发。 因此，这种液体也会占据杂质。 纯化作用通过在进入分馏塔之前串联连接的氯化氰原料的洗涤来辅助。 将该方法与用于生产氯化氰的设备相结合是非常有利的。
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公开(公告)号：US4003983A
公开(公告)日：1977-01-18
申请号：US543367
申请日：1975-01-23
CPC分类号： C01C3/003 , B01J19/002
摘要： Cyanogen is prepared by passing hydrogen cyanide together with hydrogen peroxide into a solution of copper(II) bromide, chloride, cyanide, nitrate, or sulfate containing ferric ions that is maintained at a temperature between 0.degree. and 100.degree. C.
摘要翻译： 通过将氰化氢与过氧化氢一起通入氯化铜（II），氯化物，氰化物，硝酸盐或含有铁离子的硫酸盐溶液中，将其保持在0℃至100℃的温度下制备氰氰。
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10.发明授权
公开(公告)号：US4137166A
公开(公告)日：1979-01-30
申请号：US798949
申请日：1977-05-20
申请人： Werner Heimberger , Hermann Schmitt
发明人： Werner Heimberger , Hermann Schmitt
摘要： There is provided a process for the purification of ammonia or ammonium salt containing waste waters using alkali metal or alkaline earth metal hypochlorites comprising adjusting the waste water to an initial pH of 8-10.5 with an alkaline material and then treating the waste water with an alkali metal or alkaline earth metal hypochlorite in an amount practically equivalent to the ammonia or ammonium salt, in a given case while lowering the pH during the evolution of nitrogen by additional neutralization of this pH to about 6-8 whereupon only after the end of the evolution of nitrogen the pH of the waste water, if it deviates from 7, is adjusted to the neutral region in known manner. The initial pH is preferably adjusted with the help of an alkali or alkaline earth hydroxide, most preferably it is adjusted to a pH of 8-9 with the help of a buffer salt.
摘要翻译： 提供了一种使用碱金属或碱土金属次氯酸盐净化含有氨或铵盐的废水的方法，其中包括用碱性物质将废水调节至初始pH为8-10.5，然后用碱处理废水 金属或碱土金属次氯酸盐，其数量实际上等同于氨或铵盐，在给定情况下，通过将该pH进一步中和至降低pH值至约6-8，同时降低氮气进入期间的pH值，因此仅在进化结束后 的氮气，如果偏离7，废水的pH值以已知方式调节到中性区域。 初始pH优选在碱金属或碱土金属氢氧化物的帮助下调节，最优选在缓冲盐的帮助下将其调节至pH8-9。
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