发明名称 |
A PROCESS FOR THE PRODUCTION OF CRYSTALLINE ASPARTIC ACID |
摘要 |
The invention provides a process for the production of crystalline aspartic acid comprising the steps of: (a) reacting a feed solution containing anions of a dicarboxylic reagent acid, whereby the reagent acid is converted to aspartate ions, to form a product solution containing a dissociated aspartate salt; (b) acidulating a solution of the dissociated aspartate salt resulting from the reaction in step (a) by contacting it with a cation exchanger, whereby cations of the aspartate salt are adsorbed and protons are released to the solution; (c) separating the aqueous solution from the cation exchanger; (d) crystallizing aspartic acid from the separated solution; (e) regenerating the cation exchanger obtained in step (b) by contacting it with a solution comprising the reagent acid or an acidic salt thereof, whereby protons from the solution are adsorbed on the cation exchanger and cations adsorbed in step (b) are released to the solution; and (f) using the solution obtained in step (e) as a constituent of the feed solution.
|
申请公布号 |
WO9803468(A1) |
申请公布日期 |
1998.01.29 |
申请号 |
WO1997GB01875 |
申请日期 |
1997.07.11 |
申请人 |
AMYLUM N.V.;A.E. STALEY MANUFACTURING COMPANY;WHALLEY, KEVIN;EYAL, AHARON;CAMI, PIERRE;PILON, ROBERT |
发明人 |
EYAL, AHARON;CAMI, PIERRE;PILON, ROBERT |
分类号 |
C07C227/40;C07C227/42;C07C229/24;C08G73/10;C12P13/20;(IPC1-7):C07C227/40 |
主分类号 |
C07C227/40 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|