Objetivo
THE LIKELY TREND IN THE LEVEL OF PRODUCTION OF CRUDE OIL, IN OVERALL CONSUMPTION AND IN REFINING PROCESSES WILL LEAD TO INCREASING SUPPLIES OF HEAVY OIL RESIDUALS WHICH ARE DIFFICULT TO USE : THEY FREQUENTLY HAVE TOO HIGH A SULPHUR CONTENT TO ALLOW THEM TO BE BURNT; MOREOVER, THE CONVENTIONAL HYDRO-CRACKING PROCESSES CANNOT BE APPLIED TO THEM.
A NEW WAY OF TRANSFORMING HEAVY OIL RESIDUALS EXTRACTED FROM OIL (ASPHALTS) OR FROM PRIMARY HYDROGENATED COAL INTO COMMERCIAL PRODUCTS IN THE PETROLEUM OR DIESEL-OIL RANGE IS BEING DEVELOPED. HITHERTO, CONVENTIONAL TECHNIQUES HAVE FAILED BECAUSE OF THE UNADAPTABILITY OF PRESENT-DAY COMMERCIAL CATALYSTS AND RESULTING COMPLEXITY OF THE EQUIPMENT.
WORK CONSISTS OF TREATING THE HEAVY OIL RESIDUALS, DISSOLVED IN A SOLVENT, BY A TECHNIQUE SIMILAR TO THAT OF THE HYDROGENATION OF COAL. THIS IS CARRIED OUT IN AN EXISTING PILOT PLANT, UNDER STRINGENT CONDITIONS CORRESPONDING TO TEMPERATURES LYING BETWEEN 400 AND 425 DEGREES C UNDER A HYDROGEN PRESSURE OF 200 BARS OR ABOVE. IN ORDER TO REDUCE THE VISCOSITY TO A LEVEL COMPATIBLE WITH NORMAL OPERATION OF THE UNIT, PRELIMINARY INVESTIGATIONS HAVE DETERMINED THE NATURE AND AMOUNT OF SOLVENT REQUIRED (LIGHT CRUDE OIL OF THE ORDER OF 50 %).
THE HYDROGENATION TRIALS WITH HYDROGEN AT 150 - 200 BARS AND TEMPERATURES ABOVE 400 DEGREES C HAVE BEEN CARRIED OUT WITH A SOLUBLE ORGANIC MOLYBDENUM COMPLEX CATALYST OR A SUPPORTED CO-MO/AL203 CATALYST IN CRUSHED FORM.
Tema(s)
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60550 VERNEUIL-EN-HALATTE
Francia