| 发明名称 |
METHOD OF PRODUCTION OF A METHIONINE SALT |
| 摘要 |
A method for production of a methionine salt in a reactive rectification column containing a weir having a height of 100 mm or more is provided. |
| 申请公布号 |
US2015175535(A1) |
申请公布日期 |
2015.06.25 |
| 申请号 |
US201514638870 |
申请日期 |
2015.03.04 |
| 申请人 |
HASSELBACH Hans Joachim;Koerfer Martin;Gruener Christof P.;Hanrath Franz H.;Stock Juergen;Gangadwala Jignesh;Krull Horst |
发明人 |
HASSELBACH Hans Joachim;Koerfer Martin;Gruener Christof P.;Hanrath Franz H.;Stock Juergen;Gangadwala Jignesh;Krull Horst |
| 分类号 |
C07C319/20;C07D233/76 |
主分类号 |
C07C319/20 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for continuous production of a methionine salt, comprising:
reacting 3-methylmercaptopropionaldehyde and hydrogen cyanide or a component that can be produced therefrom, thereby obtaining a solution containing 5-(2-methylmercaptoethyl)-hydantoin; alkaline hydrolysing the 5-(2-methylmercaptoethyl)-hydantoin to a methionine salt in a reactive rectification column, wherein only the solution containing 5-(2-methylmercaptoethyl)-hydantoin is fed on a topmost plate of the reactive rectification column and an alkaline circulating solution is fed on a plate located under the topmost plate. |
| 地址 |
Gelnhausen DE |
