公开(公告)号：US3835136A

公开(公告)日：1974-09-10

申请号：US36269473

申请日：1973-05-22

申请人： OLIN CORP

发明人： HIRDLER L ,  SCHIESSL H ,  DOONAN D

IPC分类号： C07D251/36 ,  C07D55/36

CPC分类号： C07D251/36

摘要： A process is described for recovering chlorine and cyanuric acid values from aqueous solutions containing a chlorinated s-triazine compound selected from the group consisting of polychloroisocyanuric acids, alkali metal salts thereof and mixtures thereof. The aqueous solution of chlorinated s-triazine compound is reacted with a mineral acid to form chlorine and cyanuric acid. An inert gas is preferably passed simultaneously through the aqueous solution to remove chlorine as it forms. The chlorine-depleted aqueous slurry containing solid cyanuric acid is separated, for example, by filtration to recover cyanuric acid. The resulting solids-free mother liquor, which contains some dissolved cyanuric acid is contacted with an adsorbent, such as activated carbon, which adsorbs the cyanuric acid from the liquid. The liquid, substantially free of chlorine and cyanuric acid values, is conveyed to waste. Cyanuric acid adhering to the adsorbent is removed from the adsorbent with an alkali metal hydroxide or carbonate solution. Recovered cyanuric acid values may be used in the preparation of additional polychloroisocyanuric acid or alkali metal salts thereof.

摘要翻译： 描述了从含有选自多氯异氰尿酸，其碱金属盐及其混合物的氯化的三嗪化合物的水溶液中回收氯和氰尿酸值的方法。 氯化三嗪化合物的水溶液与无机酸反应形成氯和三聚氰酸。 惰性气体优选同时通过水溶液以除去其形成的氯气。 含有固体氰尿酸的含氯贫含水浆料例如通过过滤分离以回收氰尿酸。

公开(公告)号：US3846424A

公开(公告)日：1974-11-05

申请号：US36269573

申请日：1973-05-22

申请人： OLIN CORP

发明人： DOONAN D ,  HIRDLER L ,  SCHIESSL H

IPC分类号： C01B7/00 ,  C01B7/01 ,  C07D251/32 ,  C07D55/36

CPC分类号： C07D251/32 ,  C01B7/01

摘要： A process is described for recovering chlorine and cyanuric acid values from aqueous solutions containing a chlorinated s-triazine compound selected from the group consisting of polychloroisocyanuric acids, alkali metal salts thereof and mixtures thereof. The aqueous solution of chlorinated s-triazine compound is reacted with a mineral acid to form chlorine and cyanuric acid. An inert gas is preferably passed simultaneously through the aqueous solution to remove chlorine as it forms. The chlorine-depleted aqueous slurry containing solid cyanuric acid is reacted in a neutralization step with an alkali metal compound to precipitate an alkali metal cyanurate, which is separated, for example, by filtration. The solid alkali metal cyanurate may be used in the preparation of additional polychloroisocyanuric acid or alkali metal salt thereof. The resulting solids-free liquid, which contains some dissolved alkali metal cyanurate is contacted with an adsorbent, such as activated carbon, which adsorbs the cyanurate from the liquid, and the resulting liquid, substantially free of chlorine and cyanuric acid values, is conveyed to waste. Alkali metal cyanurate adhering to the adsorbent is removed from the adsorbent with an alkali metal hydroxide or carbonate solution and recycled to the neutralization step.

摘要翻译： 描述了从含有选自多氯异氰尿酸，其碱金属盐及其混合物的氯化的三嗪化合物的水溶液中回收氯和氰尿酸值的方法。 氯化三嗪化合物的水溶液与无机酸反应形成氯和三聚氰酸。 惰性气体优选同时通过水溶液以除去其形成的氯气。 含有固体氰尿酸的含氯贫含水浆料在中和步骤中与碱金属化合物反应以沉淀碱金属氰脲酸盐，其通过过滤分离。 固体碱金属氰尿酸盐可用于制备额外的多氯异氰脲酸或其碱金属盐。