公开(公告)号：EP4282856A1

公开(公告)日：2023-11-29

申请号：EP22899903.3

申请日：2022-07-07

申请人： Zhejiang Nhu Pharmaceutical Co. Ltd. ,  Shangyu Nhu Bio-Chem Co., Ltd. ,  Zhejiang NHU Company Ltd.

发明人： XU, Songhua ,  YAO, Xianghua ,  SONG, Yinjiang ,  HE, Xiaoxiang ,  CHEN, Lihuan ,  LI, Feng ,  PAN, Yinxia ,  ZHAN, Pingping

IPC分类号： C07C303/30 ,  C07C309/14 ,  B01J31/18

摘要： The present disclosure discloses a method for preparing taurine. The method includes: (1) subjecting a sodium hydroxyethyl sulfonate aqueous solution to an ammonolysis reaction with ammonia under the action of an ammonia water complex ion catalyst to obtain a reaction solution containing sodium taurine; and (2) subjecting the reaction solution containing sodium taurine to deamination, dewatering by concentration, acidification and crystallization to obtain the taurine and a mother solution; where the ammonia water complex ion catalyst is obtained by complexation of ammonia and a catalyst precursor, and the catalyst precursor includes one or more metallic elements of chromium, zinc, nickel, cobalt, copper and silver. The method has the advantages of mild process conditions, short reaction time, high yield and a simple catalyst source.