Paten No.ZL 2012 2 0135462.0

summary

Threonine filter clogging liquid will generate crystal in the condition of low concentration evaporation, In order to avoid crystal precipitation,  the process will adopt the mode of four-effect evaporation to realized clear and closed production. Crystallization is the Self-developed  Oslo elutriation crystallizer without stirring 

The device adopt automatic program to control.

Third, the process flow chart: