Title:
ADDITIVE USED IN METHIONINE PREPARATION PROCESS, AND METHIONINE PREPARATION METHOD
Document Type and Number:
WIPO Patent Application WO/2021/135523
Kind Code:
A1
Abstract:
The present invention relates to an additive used in a methionine preparation process, and a methionine preparation method. The additive provided by the present invention is a mixture containing components A, B, and C; component A has a structural formula represented by the following general formula (1); component B has a structural formula represented by the following general formula (2); component C is silicone oil; RCON(CH3)CH2CH2SO3Na (1). The methionine preparation method provided in the present invention comprises crystallization and/or recrystallization of methionine in the presence of the additive provided by the present invention. The additive provided by the present invention 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 fluidity. In addition, according to the methionine preparation method of the present invention, 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.
Inventors:
CHEN ZHIRONG (CN)
YIN HONG (CN)
WANG ZHIXUAN (CN)
CHEN CONG (CN)
ZHANG SHUANGSHUANG (CN)
WANG YU (CN)
YIN HONG (CN)
WANG ZHIXUAN (CN)
CHEN CONG (CN)
ZHANG SHUANGSHUANG (CN)
WANG YU (CN)
Application Number:
PCT/CN2020/122134
Publication Date:
July 08, 2021
Filing Date:
October 20, 2020
Export Citation:
Assignee:
ZHEJIANG NHU CO LTD (CN)
SHANDONG NHU AMINO ACID CO LTD (CN)
UNIV ZHEJIANG (CN)
SHANDONG NHU AMINO ACID CO LTD (CN)
UNIV ZHEJIANG (CN)
International Classes:
C07C319/26; C07C319/28; C07C323/58
Foreign References:
| CN105764886A | 2016-07-13 | |||
| CN104203912A | 2014-12-10 | |||
| CN105646304A | 2016-06-08 | |||
| JP2004292324A | 2004-10-21 | |||
| JPH10306071A | 1998-11-17 | |||
| CN1599712A | 2005-03-23 | |||
| CN1473145A | 2004-02-04 | |||
| JPH04244056A | 1992-09-01 | |||
| EP3187489A1 | 2017-07-05 |
Attorney, Agent or Firm:
LINDA LIU & PARTNERS (CN)
Download PDF:
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