According to one or more embodiments, presently disclosed are processes for producing petrochemical products from a hydrocarbon material. The process may include separating the hydrocarbon material into at least a lesser boiling point fraction and a greater boiling point fraction, cracking at least a portion of the greater boiling point fraction, cracking at least a portion of the lesser boiling point fraction, separating cycle oil from one or both of the first cracking reaction product or the second cracking reaction product, hydrotreating the cycle oil to form a hydrotreated cycle oil, and recycling the hydrotreated cycle oil.

According to one or more embodiments, presently disclosed are processes for producing petrochemical products from a hydrocarbon material. The process may include separating the hydrocarbon material into at least a lesser boiling point fraction and a greater boiling point fraction, cracking at least a portion of the greater boiling point fraction, cracking at least a portion of the lesser boiling point fraction, separating cycle oil from one or both of the first cracking reaction product or the second cracking reaction product, hydrotreating the cycle oil to form a hydrotreated cycle oil, and recycling the hydrotreated cycle oil.

Light olefins may be produced from a hydrocarbon feed by a method that includes separating the hydrocarbon feed into at least a light gas fraction stream comprising C.sub.1-C.sub.4 alkanes, a light fraction stream comprising C.sub.5+ alkanes, and a heavy fraction stream. The temperature cut between the light fraction stream and the heavy fraction stream may be at 280° C. to 320° C. The method may further include steam cracking at least a portion of the light gas fraction stream to produce a steam cracked effluent stream and catalytically cracking at least a portion of the light fraction stream and the heavy fraction stream in a steam enhanced catalytic cracker (SECC) to produce a catalytically cracked effluent stream. The steam cracked effluent stream and the catalytically cracked effluent stream may be sent to a product separator to produce the light olefins.

Light olefins may be produced from a hydrocarbon feed by a method that includes separating the hydrocarbon feed into at least a light gas fraction stream comprising C.sub.1-C.sub.4 alkanes, a light fraction stream comprising C.sub.5+ alkanes, and a heavy fraction stream. The temperature cut between the light fraction stream and the heavy fraction stream may be at 280° C. to 320° C. The method may further include steam cracking at least a portion of the light gas fraction stream to produce a steam cracked effluent stream and catalytically cracking at least a portion of the light fraction stream and the heavy fraction stream in a steam enhanced catalytic cracker (SECC) to produce a catalytically cracked effluent stream. The steam cracked effluent stream and the catalytically cracked effluent stream may be sent to a product separator to produce the light olefins.

A feed stream including crude oil may be processed by a method that includes separating the feed stream into at least a C.sub.1-C.sub.4 hydrocarbon fraction, a lower boiling point fraction, and a higher boiling point fraction. The method may further include steam cracking at least a portion of the C.sub.1-C.sub.4 hydrocarbon fraction to form a steam cracked product, steam enhanced catalytically cracking at least a portion of the lower boiling point fraction to form a steam enhanced catalytically cracked product, and hydrocracking at least a portion of the higher boiling point fraction to form a hydrocracked product. The method may further include passing at least a portion of the steam cracked product and at least a portion of the steam enhanced catalytically cracked product to a product separator to produce one or more product streams. Systems for processing a feed stream comprising crude oil are further described herein.

A feed stream including crude oil may be processed by a method that includes separating the feed stream into at least a C.sub.1-C.sub.4 hydrocarbon fraction, a lower boiling point fraction, and a higher boiling point fraction. The method may further include steam cracking at least a portion of the C.sub.1-C.sub.4 hydrocarbon fraction to form a steam cracked product, steam enhanced catalytically cracking at least a portion of the lower boiling point fraction to form a steam enhanced catalytically cracked product, and hydrocracking at least a portion of the higher boiling point fraction to form a hydrocracked product. The method may further include passing at least a portion of the steam cracked product and at least a portion of the steam enhanced catalytically cracked product to a product separator to produce one or more product streams. Systems for processing a feed stream comprising crude oil are further described herein.

Embodiments of the disclosure provide a system and method for producing light olefins from a crude oil. A crude oil feed is introduced to a crude distillation unit to produce a distillate fraction and a residue fraction. The distillate fraction is introduced to a non-catalytic steam cracker to produce a light olefin fraction and a pyrolysis oil fraction. The residue fraction is introduced to a supercritical water reactor to produce an effluent stream. The effluent stream is introduced to a flash separator to produce a gas phase fraction and a liquid phase fraction. The gas phase fraction is introduced to a catalytic steam cracker to produce a light olefin fraction and a pyrolysis oil fraction. Optionally, the residue fraction is introduced to a vacuum distillation unit to produce a light vacuum gasoil fraction, a heavy vacuum gasoil fraction, and a vacuum residue fraction. The vacuum residue fraction is introduced to a solvent deasphalting unit to produce a deasphalted oil and a pitch fraction. The deasphalted oil fraction, optionally combined with the heavy vacuum gasoil fraction, can be introduced to the supercritical water reactor in lieu of the residue fraction.

A feedstock is processed in an FCC unit to produce at least light olefins, FCC naphtha, light cycle oil and heavy cycle oil. Light cycle oil, and in certain embodiments hydrotreated light cycle oil, is subjected to hydrogenation to produce a deeply hydrogenated middle distillate fraction. All or a portion of the deeply hydrogenated middle distillate fraction is used as feed to a petrochemicals production complex to produce light olefins.

A feedstock is processed in an FCC unit to produce at least light olefins, FCC naphtha, light cycle oil and heavy cycle oil. Light cycle oil, and in certain embodiments hydrotreated light cycle oil, is subjected to hydrogenation to produce a deeply hydrogenated middle distillate fraction. All or a portion of the deeply hydrogenated middle distillate fraction is used as feed to a petrochemicals production complex to produce light olefins.

The invention provides an improved system for separation technology intended to reduce unwanted catalyst/thermal reactions by minimizing contact of the hydrocarbons and the catalyst within the reactor.