Process for the fluidized-bed catalytic cracking of a weakly coking feedstock having a Conradson carbon residue equal to or less than 0.1% by weight and a hydrogen content equal to or greater than 12.7% by weight, comprising at least a step of cracking the feedstock, a step of separating/stripping the effluents from the coked catalyst particles and a step of regenerating said particles, the process being characterized in that at least one coking, carbonaceous and/or hydrocarbonaceous effluent having a content of aromatic compounds of greater than 50% by weight, comprising more than 20% by weight of polyaromatic compounds, is recycled to homogeneously distributed and weakly coked catalyst, before regeneration, in order to adjust the delta coke of the process.

Process for the fluidized-bed catalytic cracking of a weakly coking feedstock having a Conradson carbon residue equal to or less than 0.1% by weight and a hydrogen content equal to or greater than 12.7% by weight, comprising at least a step of cracking the feedstock, a step of separating/stripping the effluents from the coked catalyst particles and a step of regenerating said particles, the process being characterized in that at least one coking, carbonaceous and/or hydrocarbonaceous effluent having a content of aromatic compounds of greater than 50% by weight, comprising more than 20% by weight of polyaromatic compounds, is recycled to homogeneously distributed and weakly coked catalyst, before regeneration, in order to adjust the delta coke of the process.

Disclosed herein is an improved fluidized catalytic cracking process for converting normally liquid hydrocarbon feedstock with simultaneous reduction of sulfur content in the liquid products obtained therefrom which comprises carrying out the cracking process in the presence of carbon monoxide gas as a reducing agent. The process optionally includes a step of premixing the hydrocarbon feedstock with carbon monoxide gas causing major sulfur reduction before effecting the cracking. The premixing is done in a specified nozzle assembly linked to the FCC unit.

Disclosed herein is an improved fluidized catalytic cracking process for converting normally liquid hydrocarbon feedstock with simultaneous reduction of sulfur content in the liquid products obtained therefrom which comprises carrying out the cracking process in the presence of carbon monoxide gas as a reducing agent. The process optionally includes a step of premixing the hydrocarbon feedstock with carbon monoxide gas causing major sulfur reduction before effecting the cracking. The premixing is done in a specified nozzle assembly linked to the FCC unit.

The present invention relates to a method for producing renewable C3 hydrocarbons D and renewable aromatic hydrocarbons E from a renewable feedstock A, in particular to methods comprising hydrodeoxygenation (20) and catalytic cracking (40) steps wherein the catalytic cracking is catalysed by a catalyst comprising a zeolite and a support, wherein the zeolite is a 12-membered ring zeolite with a pore size below 0.7 nm.

The present invention relates to a method for producing renewable C3 hydrocarbons D and renewable aromatic hydrocarbons E from a renewable feedstock A, in particular to methods comprising hydrodeoxygenation (20) and catalytic cracking (40) steps wherein the catalytic cracking is catalysed by a catalyst comprising a zeolite and a support, wherein the zeolite is a 12-membered ring zeolite with a pore size below 0.7 nm.

An integrated process for upgrading a hydrocarbon oil feed stream utilizing a delayed coker and steam enhanced catalytic cracker includes solvent deasphalting the hydrocarbon oil stream to form at least a deasphalted oil stream and heavy residual hydrocarbons, the heavy residual hydrocarbons including at least asphaltenes; delayed coking the heavy residual hydrocarbons to form petroleum coke and a delayed coker product stream; hydrotreating the delayed coker product stream and the deasphalted oil stream to form a light C.sub.5+ hydrocarbon stream, and a heavy C.sub.5+ hydrocarbon stream; steam enhanced catalytically cracking the light C.sub.5+ hydrocarbon stream to form a light steam enhanced catalytically cracked product stream including olefins, benzene, toluene, xylene, naphtha, or combinations thereof; and steam enhanced catalytically cracking the heavy C.sub.5+ hydrocarbon stream to form a heavy steam enhanced catalytically cracked product including olefins, benzene, toluene, xylene, naphtha, or combinations thereof.

An integrated process for upgrading a hydrocarbon oil feed stream utilizing a delayed coker and steam enhanced catalytic cracker includes solvent deasphalting the hydrocarbon oil stream to form at least a deasphalted oil stream and heavy residual hydrocarbons, the heavy residual hydrocarbons including at least asphaltenes; delayed coking the heavy residual hydrocarbons to form petroleum coke and a delayed coker product stream; hydrotreating the delayed coker product stream and the deasphalted oil stream to form a light C.sub.5+ hydrocarbon stream, and a heavy C.sub.5+ hydrocarbon stream; steam enhanced catalytically cracking the light C.sub.5+ hydrocarbon stream to form a light steam enhanced catalytically cracked product stream including olefins, benzene, toluene, xylene, naphtha, or combinations thereof; and steam enhanced catalytically cracking the heavy C.sub.5+ hydrocarbon stream to form a heavy steam enhanced catalytically cracked product including olefins, benzene, toluene, xylene, naphtha, or combinations thereof.

An integrated process for upgrading a hydrocarbon oil feed stream includes solvent deasphalting the hydrocarbon oil stream to form at least a deasphalted oil stream and heavy residual hydrocarbons, delayed coking the heavy residual hydrocarbons to form petroleum coke and a delayed coker product stream; hydrotreating the delayed coker product stream and the deasphalted oil stream to form a C.sub.3-C.sub.4 hydrocarbon stream, a light C.sub.5+ hydrocarbon stream, and a heavy C.sub.5+ hydrocarbon stream; dehydrogenating the C.sub.3-C.sub.4 hydrocarbon stream to form propylene and butylene; steam enhanced catalytically cracking the light C.sub.5+ hydrocarbon stream to form a light steam enhanced catalytically cracked product stream including olefins, benzene, toluene, xylene, naphtha, or combinations thereof; and steam enhanced catalytically cracking the heavy C.sub.5+ hydrocarbon stream to form a heavy steam enhanced catalytically cracked product including olefins, benzene, toluene, xylene, naphtha, or combinations thereof.

An integrated process for upgrading a hydrocarbon oil feed stream includes solvent deasphalting the hydrocarbon oil stream to form at least a deasphalted oil stream and heavy residual hydrocarbons, delayed coking the heavy residual hydrocarbons to form petroleum coke and a delayed coker product stream; hydrotreating the delayed coker product stream and the deasphalted oil stream to form a C.sub.3-C.sub.4 hydrocarbon stream, a light C.sub.5+ hydrocarbon stream, and a heavy C.sub.5+ hydrocarbon stream; dehydrogenating the C.sub.3-C.sub.4 hydrocarbon stream to form propylene and butylene; steam enhanced catalytically cracking the light C.sub.5+ hydrocarbon stream to form a light steam enhanced catalytically cracked product stream including olefins, benzene, toluene, xylene, naphtha, or combinations thereof; and steam enhanced catalytically cracking the heavy C.sub.5+ hydrocarbon stream to form a heavy steam enhanced catalytically cracked product including olefins, benzene, toluene, xylene, naphtha, or combinations thereof.