Catalytic cracking with deasphalted oil

A catalytic cracking process, comprising the steps of:

• feeding virgin unhydrotreated resid to a reactor;
• feeding resins to said reactor;
• feeding hydrotreating catalyst to said reactor;
• injecting hydrogen-rich gases to said reactor;
• hydrotreating said virgin resid and resins in said reactor by contacting said virgin resid and resins with said hydrogen-rich gases in the presence of said hydrotreating catalyst and in the absence of a hydrogen donor under hydrotreating conditions to produce hydrotreated resid oil;
• fractionating said hydrotreated resid oil into fractions of gas oil and resid bottoms;
• separating asphaltenes, resins, and deasphalted oil from said resid bottoms by solvent extraction;
• recycling said resins to said reactor;
• and
• catalytically cracking said gas oil and deasphalted oil in the presence of a cracking catalyst and in the absence of hydrogen-rich gases to produce upgraded oil.

A catalytic cracking process, comprising the steps of:

• feeding atmospheric gas oil from an atmospheric tower to a cracking reactor of a catalytic cracking unit, said cracking reactor comprising at least one reactor selected from the group consisting of a riser reactor and a catalytic cracker;
• feeding primary gas oil from a primary tower to said cracking reactor;
• feeding hydrotreated oil from a catalytic feed hydrotreating unit to said cracking reactor;
• feeding solvent-extracted oil comprising less than 5 ppm vanadium and less than 5 ppm nickel to said cracking reactor;
• feeding fresh and regenerated crystalline aluminosilicate cracking catalyst to said cracking reactor;
• catalytically cracking said gas oil, hydrotreated oil and solvent-extracted oil in said cracking reactor in the presence of said cracking catalyst under catalytic cracking conditions to produce cracked oil leaving spent coked catalyst;
• conveying said spent coked catalyst to a regenerator of said catalytic cracking unit;
• injecting air into said regenerator;
• regenerating said spent catalyst by substantially combusting coke on said spent catalyst in the presence of air in said regenerator;
• recycling said regenerated catalyst directly from said regenerator to said cracking reactor in the absence of substantially demetallizing said regenerated catalyst;
• separating said cracked oil in a fractionator into streams of light hydrocarbon gases, catalytic naphtha, catalytic cycle oil, and decanted oil;
• substantially desalting crude oil;
• heating said desalted crude oil in a pipestill furnace;
• pumping said heated crude oil to a primary distillation tower;
• separating said heated crude oil in said primary distillation tower into streams of naphtha, kerosene, primary gas oil, and primary reduced crude oil;
• conveying said primary gas oil to said catalytic cracker;
• pumping said primary reduced crude oil to a pipestill vacuum tower;
• separating said primary gas oil in said pipestill vacuum tower into streams of wet gas, heavy gas oil, and vacuum reduced crude oil providing resid oil;
• feeding fresh feed comprising said resid oil from said pipestill vacuum tower to a resid hydrotreating unit comprising a series of three ebullated bed reactors;
• injecting hydrogen-rich gases into said ebullated bed reactors;
• conveying resid hydrotreating catalyst to said ebullated bed reactors;
• ebullating said resid oil and said hydrogen-rich gases together in the presence of said resid hydrotreating catalyst in said ebullated bed reactors at a pressure ranging from about 2550 psia to about 3050 psia to produce upgraded hydrotreated resid oil;
• separating at least a portion of said hydrotreated resid oil in an atmospheric tower into atmospheric streams of distillate, gas oil, and atmospheric tower bottoms comprising atmospheric resid oil;
• conveying said atmospheric stream of gas oil from said atmospheric tower to said cracking reactor;
• separating said atmospheric resid oil in a resid vacuum tower into vacuum streams of vacuum gas oil and vacuum tower bottoms comprising vacuum resid oil;
• conveying said vacuum gas oil from said resid vacuum tower to a catalytic feed hydrotreating unit;
• feeding coker gas oil to said catalytic feed hydrotreating unit;
• injecting hydrogen-rich gases to said catalytic feed hydrotreating unit;
• conveying catalytic feed hydrotreating catalyst to said catalytic feed hydrotreating unit;
• hydrotreating said vacuum gas oil and said coker gas oil with said hydrogen-rich gases in the presence of said catalytic feed hydrotreating catalyst in said catalytic feed hydrotreating unit to produce hydrotreated oil;
• passing said hydrotreated oil to said cracking reactor;
• conveying a portion of said vacuum tower bottoms from said resid vacuum tower to a coker;
• coking said vacuum tower bottoms in said coker to produce coke and coker resid oil;
• conveying said coker resid oil to a combined tower;
• separating said coker resid oil in said combined tower into streams of coker gases, coker naphtha, and coker gas oil;
• conveying said coker gas oil from said coker to said catalytic feed hydrotreating unit;
• conveying and feeding a substantial portion of said vacuum tower bottoms from said resid vacuum tower to a multistage solvent extraction unit;
• feeding a solvent to said multistage solvent extraction unit, said solvent comprising a member selected from the group consisting of butane and pentane;
• substantially deasphalting and solvent-extracting said vacuum tower bottoms with said solvent in said multistage solvent extraction unit to separate said vacuum tower bottoms into streams of substantially deasphalted solvent-extracted oil, substantially deasphalted solvent-extracted resins, and substantially deresined solvent-extracted asphaltenes;
• recovering said solvent under supercritical conditions and recycling said solvent to said solvent extraction unit;
• conveying said resins from said solvent extraction unit to said resid hydrotreating unit;
• transporting at least some of said asphaltenes for use as solid fuel;
• and
• conveying said solvent-extracted oil from said solvent extraction unit to said cracking reactor.