METHOD FOR CATALYTIC GAS-PHASE OXIDATION OF PROPENE TO ACRYLIC ACID

PROBLEM TO BE SOLVED: To provide a method for catalytic gas-phase oxidation of propene to acrylic acid. SOLUTION: The reaction gas starting mixture is oxidized, with an increased propene loading, in a first reaction stage, over a first fixed-bed catalyst and then the acrolein-containing product gas...

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Hauptverfasser:	HARTH KLAUS, HAMMON ULRICH, ARNOLD HEIKO, NEUMANN HANS-PETER, UNVERRICHT SIGNE, TENTEN ANDREAS
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY GENERAL METHODS OF ORGANIC CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for catalytic gas-phase oxidation of propene to acrylic acid. SOLUTION: The reaction gas starting mixture is oxidized, with an increased propene loading, in a first reaction stage, over a first fixed-bed catalyst and then the acrolein-containing product gas mixture of the first reaction stage is oxidized, in a second reaction stage, with an increased acrolein loading, over a second fixed-bed catalyst, the catalyst moldings in both reaction stages having an annular geometry. COPYRIGHT: (C)2011,JPO&INPIT