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Hydrocatalytic desulfurization of a mixture of straight-run and catalytically cracked gas oils

阅读:678发布:2022-01-23

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1. A PROCESS FOR THE HYDROCATALYTIC DESULFURIZATION OF A PETROLEUM FEEDSTOCK CONSISTING OF A BLEND OF CATALYTICALLY CARACKED GAS OIL AND STRAIGHT-RUN GAS OIL, SAID CRACKED GAS OIL BEING PRESENT IN SAID BLEND IN AN AMOUNT UP TO ABOUT 20% BY VOLUME, WHICH COMPRISES CONTACTING THE FEEDSTOCK WITH A CATALYST CONSISTING ESSENTIALLY OF THE OXIDES OF COBALT AND MOLYBDENUM SUPPORTED ON ALUMINA, SAID CATALYST ALSOCONTAINING FLOURINE IN AN AMOUNT OF ABOUT 0.1% TO ABOUT 6% BY WEIGHT OF THE CATALYST, AT A TEMPERATURE WITHIN THE RANGE 750 TO 800* F. AND AT A SPACE VELOCITY OF THE LIQUID FEEDSTOCK WITHIN THE RANGE 1 TO 5 V./V./HR., SEPARATING A HYDROGEN-RICH GAS FROM THE TREATED FEEDSTOCK, RECYCLING SAID HYDROGEN-RICH GAS TO THE REACTION ZONE UNTIL THE PRESSURE THEREIN REACHES EQUILIBRIUM, SEPARATING HYDROGEN SULFIDE FROM THE TREATED FEEDSTOCK, AND RECOVERING A TREATED FEEDSTOCK HAVING A REDUCED SULFUR CONTENT.
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