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:
Aug. 19, 2025
Filed:
Oct. 20, 2020
Zhejiang Nhu Co., Ltd., Zhejiang, CN;
Shandong Nhu Amino Acid Co., Ltd., Shandong, CN;
Zhirong Chen, Zhejiang, CN;
Hong Yin, Zhejiang, CN;
Zhixuan Wang, Shandong, CN;
Cong Chen, Shandong, CN;
Shuangshuang Zhang, Shandong, CN;
Yu Wang, Zhejiang, CN;
ZHEJIANG NHU CO., LTD., Zhejiang, CN;
SHANDONG NHU AMINO ACID CO., LTD., Shandong, CN;
Abstract
The present disclosure relates to an additive used in a methionine preparation process, and a methionine preparation method. The additive provided by the present disclosure is a mixture containing components A, B, and C; component A has a structure represented by the following general formula (1); component B has a structure represented by the following general formula (2); component C is silicone oil; RCON(CH)CHCHSONa (1). The methionine preparation method provided in the present invention comprises subjecting methionine to crystallization and/or recrystallization in the presence of the additive provided by the present disclosure. The additive provided by the present disclosure results in uniform emulsification, has good stability, can be used stably for a long time, and is suitable for a continuous crystallization process. The prepared methionine crystal has a good crystal form, a large bulk density, and good flowability. In addition, according to the methionine preparation method of the present disclosure, a crystallization system can operate continuously and stably for a long time without obvious foaming, and the crystallization process of the methionine product can proceed smoothly.