Diammonium succinate → Succinic Acid

Reaktionsgleichung

[C:1]([O-:8])(=[O:7])[CH2:2][CH2:3][C:4]([O-:6])=[O:5].[NH4+:9].[NH4+].S([O-])([O-])(=O)=O.[NH4+].[NH4+]>O>[C:1]([O-:8])(=[O:7])[CH2:2][CH2:3][C:4]([O-:6])=[O:5].[NH4+:9].[NH4+:9].[C:1]([OH:8])(=[O:7])[CH2:2][CH2:3][C:4]([OH:6])=[O:5]

Komponenten

Versuchsvorschrift

Operations involving Streams 3, 4, 5, 11, 12, 13 and 15 in FIGS. 1 and 2 were simulated based on the data collected in Experiments I, II and III. From Experiment I, a pH value of 1.6 was chosen as the target pH for the crystallization of succinic acid. From Experiment II, 80% w/w methanol solution was chosen as the target methanol-water ratio for the crystallization of sulfates. Using the results of Experiment III, the initial concentration of ammonium succinate was chosen such that there would have been sufficient water to solubalize ammonium sulfate produced in the conversion of ammonium succinate into succinic acid. This precaution was taken to minimize contamination of succinic acid by sulfates.