公开(公告)号：US5081305A

公开(公告)日：1992-01-14

申请号：US257479

申请日：1988-10-13

申请人： Richard V. C. Carr ,  Steven M. Galaton ,  Thomas A. Johnson ,  Thomas A. Albanese

发明人： Richard V. C. Carr ,  Steven M. Galaton ,  Thomas A. Johnson ,  Thomas A. Albanese

IPC分类号： B01J23/04 ,  C07B61/00 ,  C07C213/02 ,  C07C217/08 ,  C07C253/34

CPC分类号： C07C217/08 ,  C07C213/02 ,  C07C253/34 ,  Y02P20/52

摘要： This invention relates to a process for the separation of acrylonitrile used in the cyanoethylation of glycols to produce a bis(cyanoethylated) aliphatic glycol from the resulting glycol which is then reduced with hydrogen to produce the corresponding bis(aminopropoxy) alkane. In this process, acrylonitrile or methacrylonitrile is reacted with an aliphatic glycol in stoichiometric excess and the acrylonitrile removed from the cyanoethylated glycol by reaction with aliphatic primary or secondary alcohol prior to effecting the hydrogenation of the cyanoethylated aliphatic glycol in the presence of the acrylonitrile-amine reaction product. The reaction product then can be separated by conventional techniques such as distillation.

公开(公告)号：US5075507A

公开(公告)日：1991-12-24

申请号：US226641

申请日：1988-08-01

申请人： Richard V. C. Carr ,  Thomas A. Johnson ,  Steven M. Galaton ,  Thomas A. Albanese

发明人： Richard V. C. Carr ,  Thomas A. Johnson ,  Steven M. Galaton ,  Thomas A. Albanese

IPC分类号： C07C213/02 ,  C07C213/06 ,  C07C217/08 ,  C07C253/34

CPC分类号： C07C217/08 ,  C07C213/02 ,  C07C213/06 ,  C07C253/34

摘要： This invention relates to a process for the separation of acrylonitrile used in the cyanoethylation of glycols to produce a bis(cyanoethylated) aliphatic glycol from the resulting glycol which is then reduced with hydrogen to produce the corresponding bis(aminopropyl) aliphatic glycol. In this process, acrylonitrile is reacted with an aliphatic glycol in stoichiometric excess and the acrylonitrile removed from the cyanoethylated glycol by reaction with aliphatic primary or secondary amine prior to effecting the hydrogenation of the cyanoethylated aliphatic glycol in the presence of the acrylonitrile-amine reaction product. The reaction product then can be separated by conventional techniques such as distillation.

公开(公告)号：US4604214A

公开(公告)日：1986-08-05

申请号：US766849

申请日：1985-08-16

申请人： Richard V. C. Carr ,  Carl J. Martin ,  Roland Gonzalez ,  Thomas A. Albanese

发明人： Richard V. C. Carr ,  Carl J. Martin ,  Roland Gonzalez ,  Thomas A. Albanese

IPC分类号： C02F1/72 ,  C02F9/00 ,  C07C201/16

CPC分类号： C07C201/16 ,  C02F1/722 ,  C02F2101/38 ,  C02F2103/36 ,  Y10S210/909

摘要： This invention relates to a process for removing trinitrocresols and picric acid contaminants from a wastewater stream generated in the production of nitroaromatics, particularly dinitrotoluene, by the mixed acid technique. The process involves contacting the crude dinitrotoluene generated by the mixed acid technique with an alkaline medium to generate an alkaline wash water containing water soluble nitrocresols and picric acid therein. This wastewater then, is separated from the organic component or may be recycled for contact with further quantities of crude dinitrotoluene product from the reactor. When the concentration of the water soluble salts of trinitrocresols and picric acid is of sufficient concentration, the wash water is treated with aqueous acid in sufficient proportion to reduce the pH to a level from 3-4. After pH adjustment, the medium is contacted with hydrogen peroxide and a ferrous ion under conditions to effect oxidation of a substantial portion of the trinitrocresol to carboxylic acid, nitric acid and carbon dioxide.

摘要翻译： 本发明涉及通过混合酸技术从硝基芳族化合物，特别是二硝基甲苯的生产中产生的废水中除去三硝基甲酚和苦味酸污染物的方法。 该方法包括将由混合酸技术产生的粗二硝基甲苯与碱性介质接触，以产生含有水溶性硝基甲酚和苦味酸的碱性洗涤水。 然后，该废水与有机组分分离，或者可以再循环用于与来自反应器的另外量的粗二硝基甲苯产物接触。 当三硝基甲酚和苦味酸的水溶性盐的浓度足够浓度时，用酸水溶液以足够的比例处理洗涤水，将pH降至3-4。 在pH调节之后，使介质与过氧化氢和亚铁离子接触，以使大部分三硝基甲酚氧化成羧酸，硝酸和二氧化碳。