The invention relates to C.sub.5+ hydrocarbon conversion. More particularly, the invention relates to separating a vapor phase product and a liquid phase product from a heated mixture that includes steam and C.sub.5+ hydrocarbons, catalytically cracking the liquid phase product and steam cracking the vapor phase product.

The invention relates to C.sub.5+ hydrocarbon conversion. More particularly, the invention relates to separating a vapor phase product and a liquid phase product from a heated mixture that includes steam and C.sub.5+ hydrocarbons, catalytically cracking the liquid phase product and steam cracking the vapor phase product.

The present disclosure relates to hydrocarbon pyrolysis of advantaged feeds. The advantaged feeds can comprise hydrocarbon, at least one halogen-containing composition, and at least one metal-containing composition, where the halogen-containing composition and the metal-containing composition are substantially different compositions. The disclosure encompasses steam cracking of advanced feeds comprising hydrocarbon and one or more of chloride-containing compositions, nickel-containing compositions, and vanadium-containing compositions.

A method for upgrading heavy oil by using a coke production byproduct comprises the steps of: producing a mixed solution by mixing a coke production byproduct and heavy oil; and hydrogenating the mixed solution under a hydrogenation catalyst, wherein the present disclosure is economical and effective by being able to reduce the amount of coke formation and significantly reduce the partial pressure of added hydrogen by using the coke production byproduct as a hydrogen donor.

A catalytic upgrading process includes introducing a feed comprising crude oil to a steam cracking unit, thereby producing pyrolysis fuel oil (PFO). The PFO is introduced to a first catalytic depolyaromatization reactor to remove polyaromatics from the feed, thereby producing polyaromatics adsorbed to the catalyst and depolyaromatized PFO. The depolyaromatized PFO is introduced to a hydrocracking unit. The resulting benzene-toluene-xylenes (BTX) and liquid petroleum gas (LPG) are separated, and the BTX is introduced to a BTX complex to produce refined BTX. The LPG can then be introduced to the steam cracking unit. After depolyaromatization, a wash solvent is introduced into the first catalytic depolyaromatization reactor to remove the polyaromatics, regenerate the catalyst, and produce a mixture comprising the wash solvent and the polyaromatics. The wash solvent is separated from the polyaromatics.

A catalytic upgrading process includes introducing a feed comprising crude oil to a steam cracking unit, thereby producing pyrolysis fuel oil (PFO). The PFO is introduced to a first catalytic depolyaromatization reactor to remove polyaromatics from the feed, thereby producing polyaromatics adsorbed to the catalyst and depolyaromatized PFO. The depolyaromatized PFO is introduced to a hydrocracking unit. The resulting benzene-toluene-xylenes (BTX) and liquid petroleum gas (LPG) are separated, and the BTX is introduced to a BTX complex to produce refined BTX. The LPG can then be introduced to the steam cracking unit. After depolyaromatization, a wash solvent is introduced into the first catalytic depolyaromatization reactor to remove the polyaromatics, regenerate the catalyst, and produce a mixture comprising the wash solvent and the polyaromatics. The wash solvent is separated from the polyaromatics.

Disclosed is a method for maximizing ethylene or propene production, the main steps thereof being: taking crude oil and distillate thereof, pre-processing urban mixed-waste plastics as raw material, then entering same into a catalytic cracking reactor, removing via a two-stage pre-wash tower and related separation, then cooling the reacted high-temperature oil and gas and removing impurities to obtain light and heavy distillate oils; performing a hydrogenation reaction operation on the heavy distillate oil; performing light distillate oil separation, performing a recombination operation on its olefins, its alkanes entering a steam cracking apparatus to produce rich ethylene, and its aromatic components being separated as by-products; the product of the described hydrogenation and recombination reaction and the steam-cracked distillate oil is recycled to the catalytic cracking reactor. In the production method of the present invention, the yield of ethylene and propene together is 45-75 m % of the raw material, and the yield of aromatics is 15-30 m % of the raw material; in particular, when using urban mixed-waste plastics as raw material, the ethylene or propene thus produced are used to produce new plastics by way of a conventional polymerization process, achieving the chemical recycling of waste plastics.

Disclosed is a method for maximizing ethylene or propene production, the main steps thereof being: taking crude oil and distillate thereof, pre-processing urban mixed-waste plastics as raw material, then entering same into a catalytic cracking reactor, removing via a two-stage pre-wash tower and related separation, then cooling the reacted high-temperature oil and gas and removing impurities to obtain light and heavy distillate oils; performing a hydrogenation reaction operation on the heavy distillate oil; performing light distillate oil separation, performing a recombination operation on its olefins, its alkanes entering a steam cracking apparatus to produce rich ethylene, and its aromatic components being separated as by-products; the product of the described hydrogenation and recombination reaction and the steam-cracked distillate oil is recycled to the catalytic cracking reactor. In the production method of the present invention, the yield of ethylene and propene together is 45-75 m % of the raw material, and the yield of aromatics is 15-30 m % of the raw material; in particular, when using urban mixed-waste plastics as raw material, the ethylene or propene thus produced are used to produce new plastics by way of a conventional polymerization process, achieving the chemical recycling of waste plastics.

A method for producing an olefin and a monocyclic aromatic hydrocarbon of the present invention includes a dicyclopentadiene removal treatment step of removing dicyclopentadienes having a dicyclopentadiene skeleton from a feedstock oil which is a thermally-cracked heavy oil obtained from an apparatus for producing ethylene and which has a 90 volume % distillate temperature, as a distillation characteristic, of 390° C. or lower; and a cracking and reforming reaction step of obtaining a product containing an olefin and a monocyclic aromatic hydrocarbon by bringing the feedstock oil having a content of dicyclopentadienes adjusted to 10% by weight or less by treating a part or all of the feedstock oil through the dicyclopentadiene removal step into contact with a catalyst and reacting the feedstock oil.

A method for producing an olefin and a monocyclic aromatic hydrocarbon of the present invention includes a dicyclopentadiene removal treatment step of removing dicyclopentadienes having a dicyclopentadiene skeleton from a feedstock oil which is a thermally-cracked heavy oil obtained from an apparatus for producing ethylene and which has a 90 volume % distillate temperature, as a distillation characteristic, of 390° C. or lower; and a cracking and reforming reaction step of obtaining a product containing an olefin and a monocyclic aromatic hydrocarbon by bringing the feedstock oil having a content of dicyclopentadienes adjusted to 10% by weight or less by treating a part or all of the feedstock oil through the dicyclopentadiene removal step into contact with a catalyst and reacting the feedstock oil.