公开(公告)号：US20020193628A1

公开(公告)日：2002-12-19

申请号：US10153908

申请日：2002-05-24

申请人： SIEMENS AXIVA GmbH & CO. KG

发明人： Rainald Forbert ,  Thomas Diehl

IPC分类号： C07C39/29

CPC分类号： C07C303/44 ,  C07C309/31 ,  C07C309/42

摘要： A process for recovering and purifying substituted benzenesulfonates, by neutralizing a mixture including at least one substituted benzenesulfonate, or at least one corresponding substituted benzenesulfonic acid, and sulfur trioxide, sulfuric acid and/or hydrogen chloride in free or bound form, in an aqueous phase using an alkali metal hydroxide, and purifying it in this aqueous phase, and by subsequently separating the substituted benzenesulfonate(s) from this aqueous phase. The mixture is comminuted into particles having a Sauter mean diameter in the range from 1 nullm to 2 cm, either before or during introduction into this aqueous phase.

摘要翻译： 通过在水相中中和包含至少一种取代的苯磺酸盐或至少一种相应的取代的苯磺酸的混合物，以及游离或结合形式的三氧化硫，硫酸和/或氯化氢来回收和纯化取代的苯磺酸盐的方法 使用碱金属氢氧化物，并在该水相中纯化，并随后从该水相中分离出取代的苯磺酸盐。 在引入该水相之前或期间，将该混合物粉碎成具有在1mum至2cm范围内的沙特平均直径的颗粒。