Abstract:
Methods are provided for extracting heterocyclic compounds, organometallic compounds, and polynuclear aromatic hydrocarbons from a hydrocarbon feedstock such as crude oil or a crude fraction. The heterocyclic compounds and organometallic compounds are removed from the hydrocarbon feedstock through one or more successive extractions to form a first raffinate. The extractions use a first solvent system containing an ionic liquid formed from carbon dioxide and water. The polynuclear aromatic hydrocarbons are removed from the first raffinate using a second solvent system containing an aprotic solvent such as NMP, DMSO, aromatics, or combinations thereof. The extracted compounds remain chemically intact and may be fractionated for further applications. Further methods are provided for producing a hydrocarbon raffinate having reduced levels of heterocyclic compounds, organometallic compounds, and 2-4 cycle polynuclear aromatic hydrocarbons.
Abstract:
According to one more embodiments, petrochemical products may be produced from a hydrocarbon material by a process that may comprise separating the hydrocarbon material into at least a lesser boiling point fraction, a medium boiling point fraction, and a greater boiling point fraction. The process may further comprise cracking at least a portion of the lesser boiling point fraction and the medium boiling point fraction in a second reactor unit in the presence of a second catalyst at a reaction temperature of from 500 °C to 700 °C to produce a second cracking reaction product, wherein the lesser boiling point fraction enters the second reactor unit upstream of wherein the medium boiling point fraction enters the second reactor.
Abstract:
A process for upgrading a hydrocarbon feed, such as crude oil or other heavy oils, may include hydrotreating a hydrocarbon feed in a hydrotreating unit to produce a hydrotreated effluent that includes asphaltenes, coke precursors, or both. The process further includes hydrocracking the hydrotreated effluent in a hydrocracking unit to produce a hydrocracked effluent, adsorbing at least a portion of the asphaltenes, coke precursors, or both, from the hydrotreated effluent, the hydrocracked effluent, or both, separating the hydrocracked effluent into at least an upgraded lesser-boiling effluent and a greater-boiling effluent in a hydrocracked effluent separation system, and steam cracking the upgraded lesser-boiling effluent to produce olefins, aromatic compounds, or combinations of these. The process may further include recycling the greater boiling effluent back to the hydrotreating unit and hydrocracking a middle distillate effluent from the hydrocracked effluent separation system. Systems for conducting the processes are also disclosed.
Abstract:
According to an embodiment of the present disclosure, petrochemicals may be produced from crude oil by a process which includes passing the crude oil and hydrogen into a hydroprocessing reactor, separating the hydrotreated oil into a lesser boiling point fraction and a greater boiling point fraction, passing the lesser boiling point fraction to a pyrolysis section of a steam cracker to produce a pyrolysis effluent comprising olefins, aromatics, or both, passing the greater boiling point fraction to a gasifier, where the gasifier produces hydrogen, and passing at least a portion of the hydrogen produced by the gasifier to the hydroprocessing reactor.
Abstract:
Methods of extracting 1-4 cycle heterocyclic compounds and 2-5 cycle polynuclear aromatic hydrocarbons from a hydrocarbon feedstock are described. The methods include providing a hydrocarbon feedstock containing crude oil fractions, and determining an A/R ratio and an asphaltene concentration of the hydrocarbon feedstock. Based upon the A/R ratio and the asphaltene concentration, the treatable hydrocarbon feedstock undergoes one or more of cracking and fractionating. Subsequently, at least one targeted portion of the heterocyclic compounds is extracted from the fractionated stream with an aqueous solvent. A stream containing the 2-5 cycle polynuclear aromatic hydrocarbons is transferred to an extractor and the 2-5 cycle polynuclear aromatic hydrocarbons are extracted with a solvent system comprising an aprotic solvent.
Abstract:
According to an embodiment disclosed, a feedstock hydrocarbon may be processed by a method which may include separating the feedstock hydrocarbon into a lesser boiling point hydrocarbon fraction and a greater boiling point hydrocarbon fraction, cracking the greater boiling point hydrocarbon fraction in a high-severity fluid catalytic cracking reactor unit to form a catalytically cracked effluent, cracking the lesser boiling point hydrocarbon fraction in a steam cracker unit to form a steam cracked effluent, and separating one or both of the catalytically cracked effluent or the steam cracked effluent to form two or more petrochemical products. In one or more embodiments, the feedstock hydrocarbon may include crude oil and one of the petrochemical products may include light olefins.
Abstract:
Embodiments for an integrated hydrotreating and steam pyrolysis process for the processing of crude oil comprising recycling the higher boiling point fraction of the upgraded crude oil to increase the yield of petrochemicals such as olefins and aromatics.
Abstract translation:用于加工原油的综合加氢处理和蒸汽热解方法的实施方案包括再循环升级原油的较高沸点馏分以增加石油化学品如烯烃和芳族化合物的产率。 p >
Abstract:
According to one or more embodiments presently described, a feedstock oil may be processed by a method which may include hydrotreating the feedstock oil to reduce or remove one or more of sulfur content, metals content, nitrogen content, or aromatics content to produce a hydrotreated oil stream; separating at least a portion of the hydrotreated oil stream into a at least a lesser boiling point oil fraction stream and a greater boiling point oil fraction stream in a first separator; hydrocracking the greater boiling point oil fraction stream; and steam cracking the lesser boiling point oil fraction stream.
Abstract:
A system includes a hydroprocessing zone configured to remove impurities from crude oil; a first separation unit configured to separate a liquid output from the hydroprocessing zone into a light fraction and a heavy fraction; an aromatic extraction subsystem configured to extract aromatic petrochemicals from the light fraction; and a pyrolysis section configured to crack the heavy fraction into multiple olefinic products.
Abstract:
A processing facility is provided that includes a feedstock separation system configured to separate a feed stream into a lights stream and a heavies stream, a hydrogen production system configured to produce hydrogen and carbon dioxide from the lights stream, and a carbon dioxide conversion system configured to produce synthetic hydrocarbons from the carbon dioxide. The processing facility includes a hydroprocessing system configured to process the heavies stream.