Upgrading of crude oil by combination processing

Claim 1

A method for refining a crude oil to useful products which comprises a. separating and recovering from said crude oil, a straight run naphtha fraction, a light fuel oil fraction, a gas oil fraction boiling throughout the range 650* F. to about 1,100* F. and a heavy fraction boiling above 1,100* F., b. coking said heavy fraction and recovering a naphtha fraction separately from a heavier fraction boiling in the range of 400* F. to about 900* F., c. passing said gas oil fraction boiling throughout the range 650* F. to 1,100* F. in combination with said product of coking boiling in the range of 400* F. to about 900* F. in combination with a liquid recycle fraction from catalytic cracking to a catalytic hydrogenation step, d. reducing nitrogen contaminates in the hydrocarbon charge in said catalytic hydrogenation step to less than 500 ppm concurrently with hydrogenating polycyclic condensed ring compounds existing in the charge, e. separating the effluent of said catalytic hydrogenation step into a hydrogen rich fraction for recycle thereto, a hydrocarbon fraction boiling up to about 700* F. and a hydrocarbon fraction boiling above about 700* F., f. catalytically cracking said fraction of catalytic hydrogenation boiling above about 700* F. and separating the cracked product effluent into a light products fraction, a gasoline fraction, a light fuel oil and a heavier fraction boiling above about 650* F., g. catalytically hydrocracking said fraction of catalytic hydrogenation boiling up to about 700* F. and separating the product effluent thereof into a light products fraction, a naphtha fraction, a jet fuel fraction and a heavier recycle fraction boiling above about 550* F., h. reforming the light products fraction of catalytic cracking and hydrocracking to form hydrogen for use in said catalytic hydrogenation step and said hydrocracking step, i. removing by hydrogenation sulfur and nitrogen contaminates from said straight run naphtha fraction before passage to a catalytic reforming step in admixture with naphtha obtained from the effluent of said catalytic hydrocracking, j. separating hydrogen rich gases from reformed naphtha obtained from said catalytic reforming and employing hydrogen rich gases thus obtained in said reforming step, in said straight run naphtha hydrogenation step and as make up hydrogen passed to said catalytic hydrogenation and hydrocracking steps.

Claim 2

A method for upgrading fractions of a crude oil boiling above about 650* F. which comprises a. recovering from crude oil a hydrocarbon fraction boiling throughout the range of 650* F. to about 1,100* F. from a higher boiling fraction boiling above 1,100* F., b. thermally converting said higher boiling fraction under conditions to produce naphtha and a fuel oil fraction boiling from about 400* F. up to about 900* F., c. combining said thermally produced fuel oil fraction with said hydrocarbon fraction boiling throughout the range of 650* F. to about 1,100* F., d. catalytically hydrogenating said combined fractions under conditions to hydrogenate polycyclic aromatic compounds therein and reduce nitrogen therein to less than 500 ppm, e. separating the product effluent of said catalytic hydrogenation into hydrocarbon fractions boiling up to about 700* F. and a fraction boiling above 700* F., f. passing the hydrocarbon fraction boiling above about 700* F. to catalytic cracking and passing the fraction boiling up to about 700* F. to hydrocracking and g. recovering from said cracking steps, light product material, hydrocracked naphtha, catalytic gasoline, jet fuels, light fuel oil and insufficiently converted recycle hydrocarbon materials.