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:
Jun. 25, 2024
Filed:
Oct. 22, 2021
Cathay Biotech Inc., Shanghai, CN;
Cibt America Inc., Newark, DE (US);
Cathay (Jinxiang) Biomaterial Co., Ltd., Shandong, CN;
Chen Yang, Shanghai, CN;
Bingbing Qin, Shanghai, CN;
Yufeng Yang, Shanghai, CN;
Kai Wang, Shanghai, CN;
Xiucai Liu, Shanghai, CN;
Cathay Biotech Inc., Shanghai, CN;
CIBT America Inc., Newark, DE (US);
Cathay (Jinxiang) Biomaterial Co., Ltd., Shandong, CN;
Abstract
The present disclosure provides a system for refining long chain dicarboxylic acid, comprising: a first membrane filtration unit, for a first membrane filtration of a long chain dicarboxylic acid fermentation broth or a treated liquid therefrom; a first decolorization unit, for carrying out a first decolorization treatment to the filtrate obtained after the membrane filtration; a first acidification/crystallization unit, for carrying out a first acidification/crystallization of a filtrate obtained after the membrane filtration to give a solid-liquid mixture; a first separation unit, for a solid-liquid separation of the solid-liquid mixture; a drying unit, for drying the solid separated by the separation unit to give a first solid. By using the refining system according to the present disclosure, the purity of the obtained product is high, and the disadvantages such as poor quality of the product obtained by crystallization from a solvent and environment pollution caused by a solvent can be overcome.