Improvements relating to the treatment of catalysts

The process of the parent Specification for removing metallic contaminants from a cracking catalyst comprising SiO2 and one or more of Al2O3, MgO and ZrO2 and free from hydrogenating components susceptible to removal by chlorination, by contacting the catalyst at 350-600 DEG C. simultaneously with w...

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Bibliographische Detailangaben
Hauptverfasser:	LAWRANCE PAUL ANTHONY, HARRIS ROBERT JAMES KEIR
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY CRACKING HYDROCARBON OILS FUELS LUBRICANTS METALLURGY MINERAL WAXES PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS REFORMING OF NAPHTHA TECHNICAL GASES CONTAINING CARBON MONOXIDE THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	The process of the parent Specification for removing metallic contaminants from a cracking catalyst comprising SiO2 and one or more of Al2O3, MgO and ZrO2 and free from hydrogenating components susceptible to removal by chlorination, by contacting the catalyst at 350-600 DEG C. simultaneously with water-vapour and the vapour of a compound of general formula C.Cl2.XY where X and Y may be the same or different and selected from H, Cl, Br and F or where X and Y together may be O, is modified in that the catalyst is subsequently subjected to water-vapour alone at 350-600 DEG C. Comparative examples demonstrate the efficacy of the process of the invention against the Parent Specification and the prior art.