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    Process for production of cyanuric chloride
    2.
    发明授权
    Process for production of cyanuric chloride 失效
    氰尿酰氯生产工艺

    公开(公告)号：US3925377A

    公开(公告)日：1975-12-09

    申请号：US48345474

    申请日：1974-06-26

    Applicant: DEGUSSA

    Inventor： GEIGER FRIEDHELM ,  HEIMBERGER WERNER ,  SCHREYER GERD ,  WEIGERT WOLFGANG

    IPC: C07D251/28

    CPC classification number: C07D251/28

    Abstract: There is provided a process for the recovery of liquid cyanuric chloride from a mixture formed by the trimerization of cyanogen chloride in a trimerization reactor with subsequent fractionation of said mixture comprising conducting the mixture in an at least partially gaseous condition at 146* to 500*C. to a column system, bringing said mixture in a first fractionating column into contact with a solvent for cyanuric chloride having a boiling point between that of cyanogen chloride and that of cyanuric chloride and which is stable to cyanuric chloride, cyanogen chloride, chlorine and hydrogen chloride, recovering condensed liquid cyanuric chloride from the bottom of said first column at a temperature above the boiling point of said solvent, removing the distillate mixture containing solvent, cyanogen chloride, chlorine and any carbon dioxide, nitrogen and hydrogen chloride from the top of said first column, partially condensing a portion of said distillate and returning said partial condensate to the top of the first fractionating column, leading the solvent containing residual gas of chlorine, cyanogen chloride and any carbon dioxide, nitrogen and hydrogen chloride present to a second fractionating column adding sufficient liquid cyanogen chloride to the top of said second column to maintain a reflux in the top of said second column, removing a mixture of chlorine and cyanogen chloride and any carbon dioxide, nitrogen and hydrogen chloride free of said solvent from the top of said second column, returning the chlorine and cyanogen chloride to the trimerization reactor, insuring that the gas entering said reactor contains at least 50 weight percent cyanogen, collecting chlorine and cyanogen chloride free solvent in the bottom of the second column and returning it to the top of the first fractionating column.

    Abstract translation: 提供了一种从三氯化反应器中氯化氰三氯甲烷形成的混合物回收液态氰尿酰氯的方法，随后分馏所述混合物，包括在146℃至500℃下至少部分气态条件下进行混合 将所述混合物置于第一分馏塔中，与氰化氯和氰尿酰氯之间的沸点的氰尿酰氯溶剂接触，并且对氰尿酰氯，氯化氰，氯和氢稳定 氯化物，在所述溶剂的沸点以上的温度下从所述第一塔的底部回收冷凝的液体氰尿酰氯，从所述溶剂的顶部除去含有溶剂，氯化氰，氯和任何二氧化碳，氮和氯化氢的馏出物混合物 第一列，部分地冷凝所述馏出物的一部分并返回所述部分 将冷凝物导入第一分馏塔的顶部，导致含有残留气体的氯，氯化氰和任何二氧化碳，氮和氯化氢的溶剂存在于第二分馏塔中，向第二塔的顶部加入足够的液态氯化氰至 在所述第二塔的顶部保持回流，从所述第二塔的顶部除去氯和氯化氰以及不含所述溶剂的任何二氧化碳，氮和氯化氢的混合物，将氯和氯化氰返回到三聚反应器 确保进入所述反应器的气体含有至少50重量％的氰，在第二塔的底部收集氯和不含氯化氰的溶剂并将其返回到第一分馏塔的顶部。

    7.
    发明专利
    未知

    公开(公告)号：RO77775A

    公开(公告)日：1982-02-26

    申请号：RO9885979

    申请日：1979-10-05

    Applicant: DEGUSSA

    Inventor： BACH GERHARD ,  GEIGER FRIEDHELM ,  HEIMBERGER WERNER ,  SCHREYER GERD ,  HILLENBRAND HORST

    IPC: B01D53/68 ,  C01C3/00 ,  C07D251/28

    Abstract: 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.

    8.
    发明专利
    未知

    公开(公告)号：NO141988C

    公开(公告)日：1980-06-11

    申请号：NO126573

    申请日：1973-03-27

    Applicant: DEGUSSA

    Inventor： GEIGER FRIEDHELM ,  HEIMBERGER WERNER ,  SCHREYER GERD

    IPC: C01B7/00 ,  C01B7/01 ,  C01C3/00 ,  C01B7/02

    Abstract: 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.

    PROCESS FOR PRODUCING FINELY DIVIDED SOLID CYANURIC CHLORIDE
    9.
    发明专利
    PROCESS FOR PRODUCING FINELY DIVIDED SOLID CYANURIC CHLORIDE 未知

    公开(公告)号：CA1049517A

    公开(公告)日：1979-02-27

    申请号：CA259450

    申请日：1976-08-19

    Applicant: DEGUSSA

    Inventor： GEIGER FRIEDHELM ,  HEIMBERGER WERNER ,  LUSSLING THEODOR

    IPC: C07D251/28

    Abstract: The present invention provides a process for producing finely divided solid cyanuric chloride, which comprises injecting liquid cyanuric chloride into a separating column where it is cooled with recycle inert gases to an extent such that it separates out in a crystalline form, washing the thus heated cyanuric-chloride-vapour-containing gases in a succeeding wash column in countercurrent flow with an inert washing liquid, which dissolves cyanuric chloride, until said gases are essentially free from the cyanuric chloride vapour and simultaneously cools said gases, recycling the cooled gases to the separating chamber, reducing the temperature of the cyanuric-chloride-containing wash liquid so obtained to its initial value by recycling said liquid to said wash column through a cooler continuously raising the inside of a pipe line connected to the separating column and leading to the washing column with wash liquid and separating a partial flow of the cyanuric-chloride-containing wash liquid in a distillation column into pure liquid cyanuric chloride, which is recycled into the separating column, and pure wash liquor, which is recycled into the washing column.

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