Zeolite granulate calcination in rotary calciner - with closed spiral screw, useful for high activity esp. in oxygen purificn., by pressure swing adsorption

Calcination of zeolitic granulates is carried out in an indirectly heated rotary calciner, which has feed and discharge equipment for solids and gases, a sealed central tube (6) extending over the entire length of the calciner and a spiral screw (5) connected closely with both the central tube and t...

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Bibliographische Detailangaben
Hauptverfasser:	NAUMANN, ROLF. DR., 4150 KREFELD, DE, KELLER, WOLFGANG., 5010 BERGHEIM, DE, MESSER, DIETER. DR., 5068 ODENTHAL, DE, PUPPE, LOTHAR. DR., 5093 BURSCHEID, DE, HEISSE, HANS-PETER., 4150 KREFELD, DE, ULISCH, GUENTER, 5090 LEVERKUSEN, DE
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	BLASTING CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS THEREOF FURNACES FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL HEATING INORGANIC CHEMISTRY KILNS LIGHTING MECHANICAL ENGINEERING METALLURGY NON-METALLIC ELEMENTS 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:	Calcination of zeolitic granulates is carried out in an indirectly heated rotary calciner, which has feed and discharge equipment for solids and gases, a sealed central tube (6) extending over the entire length of the calciner and a spiral screw (5) connected closely with both the central tube and the outer rotary tube (9). USE/ADVANTAGE - The process is claimed esp. for calcination of zeolite A and zeolite X granulates. Very good contact between gas and solid can be obtd. in a narrow dwell spectrum and the granulate is freed from dust. The granulates are useful e.g. for drying and purifying gases and liquids and sepg. isomer mixts.. The process is esp. useful for continuous drying of Ca zeolite A granulate with SiO2 binder, using a small specific amt. of gas free from CO2, which is a highly selective granulate for enriching O2 by a pressure swing adsorption process. It is also suitable for drying zeolite Y, ZSMS, zeolite L, chabasite, chinoptilolite, erisnite, offretite, mazzite etc.. (6pp Dwg.No.1+2/2)