METHOD FOR PURIFICATION OF BENZOIC ACID

• Main Authors: FAESSLER, Peter, STEPANSKI, Manfred
• Format: Patent
• Language: English; Hungarian
• Published: 29.07.2019
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The present invention relates to a method for purifying a crude benzoic acid (32) by means of distillation, wherein the distillation is performed in a plant comprising a first distillation system (54), which comprises a divided wall column (10). Preferably, the divided wall column (10) comprises: -...