Method for the thermal treatment of an active catalytic mass

Thermal treatment of the precursor material of a catalytically active material in a rotary tube furnace involves circulating at least a portion of a gas stream flowing through the rotary tube furnace. Independent claims are also included for: (1) A rotary tube furnace apparatus comprising recycle ga...

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Bibliographische Detailangaben
1. Verfasser:	DIETERLE MARTIN,POEPEL WOLFGANG JUERGEN,BERNDT SILKE,FELDER RAIMUND,UNVERRICHT SIGNE,MUELLER-ENGEL KLAUS JOACHIM
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F FURNACES FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL HEATING INORGANIC CHEMISTRY KILNS LIGHTING MECHANICAL ENGINEERING METALLURGY OPEN SINTERING OR LIKE APPARATUS OVENS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL RETORTS THEIR RELEVANT APPARATUS TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	Thermal treatment of the precursor material of a catalytically active material in a rotary tube furnace involves circulating at least a portion of a gas stream flowing through the rotary tube furnace. Independent claims are also included for: (1) A rotary tube furnace apparatus comprising recycle gas compressor(s); exit gas compressor(s); pressure reducer(s); fresh gas feed(s); heatable rotary tube(s); and recycle gas pipe(s); and (2) A tube-bundle reactor comprising 5000-40000 catalyst tubes filled with a load whose catalysts contain a multi-element oxide material as active material. The load of the catalyst tube for a partial oxidation of acrolein to acrylic acid is such that when a random sample of 12 catalyst tubes is taken, the difference between the arithmetic mean activity and the highest or lowest activity is not >8[deg]C.