PROCESS FOR SEPARATING OFF FUMARIC ACID AND OTHER MINOR COMPONENTS DURING THE PRODUCTION OF MALEIC ANHYDRIDE

• Main Authors: WEISKER, WOLF-STEFFEN, FREYBERGER, RALF, WEIGUNY, JENS, KRUG, THOMAS, DAHLHOFF, ELLEN, HEILEK, JOERG, WECK, ALEXANDER, WINDECKER, GUNTHER
• Format: Patent
• Language: English; French; German
• Published: 16.03.2011
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; HETEROCYCLIC COMPOUNDS; METALLURGY; ORGANIC CHEMISTRY

Processes for decreasing fumaric acid deposits in preparing maleic anhydride by heterogeneously catalyzed oxidation of a hydrocarbon with molecular oxygen. Maleic anhydride is absorbed from the crude mixture in an absorbent in an absorption column and desorbed in a desorption column, the entirety or...