公开(公告)号：US20220081394A1

公开(公告)日：2022-03-17

申请号：US17424454

申请日：2020-05-27

申请人： ZHEJIANG NHU COMPANY LTD. ,  ZHEJIANG UNIVERSITY ,  SHANGYU NHU BIO-CHEM CO., LTD. ,  ZHEJIANG NHU PHARMACEUTICAL CO., LTD.

发明人： Zhirong CHEN ,  Xianghua YAO ,  Junhua PENG ,  Yingxia PAN ,  Xiaoxiang HE ,  Songhua XU ,  Xiaodong WU ,  Xiang FANG

IPC分类号： C07C309/14 ,  B01J19/24 ,  B01J3/00 ,  B01D61/44 ,  B01D3/06

摘要： A method for preparing sodium taurine as a taurine intermediate is provided in the present disclosure. The method comprises the following steps: providing sodium hydroxyethyl sulfonate and an ammonia source; and placing the sodium hydroxyethyl sulfonate and the ammonia source in an aminolysis reactor for an aminolysis reaction to obtain a mixture containing sodium taurine as a taurine intermediate, wherein the molar ratio of ammonia in the ammonia source to the sodium hydroxyethyl sulfonate is greater than or equal to 25:1. A method for preparing taurine is further provided.

公开(公告)号：US20220371992A1

公开(公告)日：2022-11-24

申请号：US17618887

申请日：2020-11-17

申请人： ZHEJIANG NHU COMPANY LTD. ,  ZHEJIANG NHU PHARMACEUTICAL CO., LTD. ,  SHANGYU NHU BIO-CHEM CO., LTD.

发明人： Xiaoxiang HE ,  Junhua PENG ,  Xianghua YAO ,  Songhua XU ,  Lihuan CHENG ,  Yinbing WANG ,  Yinjiang SONG ,  Lei WANG

IPC分类号： C07C303/44 ,  C07C303/22

摘要： The present disclosure relates to a method for preparing taurine and a method for recovering a mother liquor thereof. The method for recovering the taurine mother liquor comprises: providing a taurine mother liquor, and mixing the taurine mother liquor and a treating agent to obtain a solid-containing suspension, wherein the treating agent is a water-soluble organic solvent or a mixture of the water-soluble organic solvent and water; filtering the suspension to obtain a first solid product and a first filtrate; and dissolving the first solid product with an ammonia source, and then filtering same to obtain a second solid product and a second filtrate.