Continuous bleaching of natural waxes - with chromic acid in reactor with narrow range of dwell times

Oxidative bleaching of natural waxes with around 1M CrO3 soln. in H2SO4 at 90-200 degrees C under 100 m bar-20 bar, is carried out in a reactor giving a narrow range fo dwell times (pref. a cascaded bubble-column reactor), with the amt. of oxidant required being added wholly at the beginning or in p...

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Hauptverfasser:	ZINNERT,FRIEDRICH,.DR, SCHADOW,ERNST,.DR, METZ,OSWALD,.DR, STETTER,KARL-HEINZ,.DR, PETZ,KARL,.DR, RIEDEL,ALFRED,.DR
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES CANDLES CHEMISTRY CRACKING HYDROCARBON OILS DETERGENTS ESSENTIAL OILS FATTY ACIDS THEREFROM FUELS LUBRICANTS METALLURGY MINERAL WAXES PEAT PERFUMES PETROLEUM, GAS OR COKE INDUSTRIES PRODUCING (PRESSING, EXTRACTION), REFINING AND PRESERVINGFATS, FATTY SUBSTANCES (e.g. LANOLIN), FATTY OILS AND WAXES,INCLUDING EXTRACTION FROM WASTE MATERIALS 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
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Beschreibung
Zusammenfassung:	Oxidative bleaching of natural waxes with around 1M CrO3 soln. in H2SO4 at 90-200 degrees C under 100 m bar-20 bar, is carried out in a reactor giving a narrow range fo dwell times (pref. a cascaded bubble-column reactor), with the amt. of oxidant required being added wholly at the beginning or in portions during passage through the reactor. Mixing of the reactants is achieved by the steam generated by the heat of reaction and opt. by blowing in an inert gas, and the reaction mixt. finally sepd. by usual methods. Used in treatment of carnabua, candelilla, sugar cane and similar waxes and esp. opt. de-resinated crude montan wax.