The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 04, 2022
Filed:
Aug. 31, 2020
Qianjiang Yongan Pharmaceutical CO Ltd, Qianjiang, CN;
Yong Chen, Qianjiang, CN;
Xiquan Fang, Qianjiang, CN;
Feng Liu, Qianjiang, CN;
Shaobo Li, Qianjiang, CN;
QIANJIANG YONGAN PHARMACEUTICAL CO LTD, Hubei Province, CN;
Abstract
A method for removing impurities from a taurine mother liquor and recovering the taurine mother liquor. The method is used in an ethylene oxide production process for taurine. The last mother liquor of taurine is ion-exchanged through an anion exchange resin; then the anion exchange resin is eluted and regenerated with alkaline solution, and the eluate is collected. The eluate is subjected to ammonia mixing treatment, and the treated mother liquor is generated after the impunity is removed from the eluate by solid-liquid separation. The treated mother liquor can then be returned to the ammonolysis step of taurine production.