PROCESS FOR THE PURIFICATION OF PARAXYLENE

• Main Authors: MONSON, JOHN, JOSEPH, HAGEMEISTER, MARK, PAUL, JOHNSON, DAVID, LEE
• Format: Patent
• Language: English; French
• Published: 13.01.2011
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR RELEVANT APPARATUS; TRANSPORTING

The proposed process uses crystallization technology to purify paraxylene simultaneously of large concentrations of C 8 aromatics and also small concentrations of oxygenated species. Le procédé de la présente invention fait appel à une technologie de cristallisation permettant de purifier du paraxylène en l'isolant simultanément de grandes concentrations en hydrocarbures aromatiques en C8 et, également, de faibles concentrations en espèces oxygénées.