Title:
METHOD FOR PREPARING TAURINE AND METHOD FOR RECOVERING MOTHER LIQUOR THEREOF
Document Type and Number:
WIPO Patent Application WO/2021/120957
Kind Code:
A9
Abstract:
The present application 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.
Inventors:
HE XIAOXIANG (CN)
PENG JUNHUA (CN)
YAO XIANGHUA (CN)
XU SONGHUA (CN)
CHENG LIHUAN (CN)
WANG YINBING (CN)
SONG YINJIANG (CN)
WANG LEI (CN)
PENG JUNHUA (CN)
YAO XIANGHUA (CN)
XU SONGHUA (CN)
CHENG LIHUAN (CN)
WANG YINBING (CN)
SONG YINJIANG (CN)
WANG LEI (CN)
Application Number:
PCT/CN2020/129421
Publication Date:
July 15, 2021
Filing Date:
November 17, 2020
Export Citation:
Assignee:
ZHEJIANG NHU CO LTD (CN)
ZHEJIANG NHU PHARMACEUTICAL CO LTD (CN)
SHANGYU NHU BIO CHEM CO LTD (CN)
ZHEJIANG NHU PHARMACEUTICAL CO LTD (CN)
SHANGYU NHU BIO CHEM CO LTD (CN)
International Classes:
C07C303/44; C07C309/14
Attorney, Agent or Firm:
HANGZHOU HUAJIN LIANZHE INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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