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AssigneesCommissariat a l'Energie Atomique, Compagnie Francaise de Raffinage
InventorsJean Arod, Bernard Bartoli, Pierre Bergez, Jean Biedermann, Philippe Caminade, Jean-Marie Martinet, Jean Maurin, Jean Rossarie
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The present invention relates to a process for the treatment of a hydrocarbon charge by high temperature ultrafiltration, said process comprising the steps of circulating said charge in a module comprising at least one mineral ultrafiltration barrier coated with a sensitive mineral layer of at least one metal oxide and of operating at a temperature higher than 100.degree. C. The barrier, which preferably has a ceramic or metallic support, is coated with a sensitive layer selected from the group comprising titanium dioxide, magnesium oxide, aluminium oxide, spinel MgAl.sub.2 O.sub.4, silica. The invention is applicable to the regeneration of a waste oil and to the reduction of the rate of asphaltenes in a hydrocarbon charge.
A process for the treatment of a liquid hydrocarbon charge by ultrafiltration to remove unwanted impurities from said liquid hydrocarbon, said process consisting essentially of circulating said charge at a temperature greater than 100.degree. C. in at least one module comprising at least one mineral ultrafiltration barrier coated with a sensitive layer of mixed oxide of magnesium and aluminum mixed with silica the direction of said circulation being such that said liquid hydrocarbon charge initially contacts an outer surface of said coating whereby said impurities are removed from said liquid hydrocarbon charge by said coated barrier to produce an ultra-filtrate essentially free of impurities, said barrier having a radius of permeametry between 50 .ANG. and 250 .ANG. and being adapted to support a counter pressure of between 1 and 30 relative bars.
Dependencies are inferred from the claim text.