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Integrated systems and methods for separation and extraction of polynuclear aromatic hydrocarbons, heterocyclic compounds, and organometallic compounds from hydrocarbon feedstocks

A technology of aromatic hydrocarbons and compounds, applied in the field of comprehensive systems of organometallic compounds, which can solve problems such as increasing costs

Inactive Publication Date: 2017-02-22
SAUDI ARABIAN OIL CO
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Problems solved by technology

In turn, the requirements on the conventional hydrodesulfurization / hydrodenitrogenation (HDS / HDN) processes or demetallization processes commonly used to remove such compounds from crude oil are more stringent, especially in terms of increased costs

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  • Integrated systems and methods for separation and extraction of polynuclear aromatic hydrocarbons, heterocyclic compounds, and organometallic compounds from hydrocarbon feedstocks
  • Integrated systems and methods for separation and extraction of polynuclear aromatic hydrocarbons, heterocyclic compounds, and organometallic compounds from hydrocarbon feedstocks
  • Integrated systems and methods for separation and extraction of polynuclear aromatic hydrocarbons, heterocyclic compounds, and organometallic compounds from hydrocarbon feedstocks

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[0023] An example of a method for producing a hydrocarbon raffinate having a reduced content of heterocyclic compounds, organometallic compounds, and polynuclear aromatic hydrocarbons will be described. An example of a method for separating or extracting organic heteroatom compounds and polynuclear aromatic hydrocarbons from a hydrocarbon feedstock containing organic heteroatom compounds and polynuclear aromatic hydrocarbons will also be described. A method of isolating or extracting organic heteroatom compounds and polynuclear aromatic hydrocarbons from a hydrocarbon feedstock and a method of producing a hydrocarbon raffinate may each comprise removing heteroatom compounds from a hydrocarbon feedstock by extraction in a tunable solvent, followed by a process comprising non- Removal of polynuclear aromatic hydrocarbons from solvent systems with protic solvents.

[0024] As used herein, the term "polynuclear aromatic hydrocarbon" or "PAH" refers to a hydrocarbon compound having...

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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.

Description

[0001] Cross References to Related Applications [0002] The name of this application requested to be submitted on June 10, 2014 is "Integrated Systems And Methods For Separation And Extraction Of Polynuclear Aromatic Hydrocarbons, Heterocyclic Compounds, And Organometallic Compounds From Hydrocarbon Feedstocks)" (Case No. SA 6009 PA), the contents of which are incorporated herein by reference in their entirety. technical field [0003] This specification relates generally to petroleum processing and, more specifically, to integrated systems and methods for the separation, extraction and recovery of polynuclear aromatic hydrocarbons, heterocyclic compounds and organometallic compounds from hydrocarbon feedstocks. Background technique [0004] Crude oil or petroleum refineries are complex processes in which crude oil and its fractions are processed through various unit operations and unit processes. Conventional refineries primarily produce, for example, transportation fuel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G21/16C10G21/20C10G53/06
CPCC10G21/16C10G21/20C10G53/06C10G21/08C10G21/00
Inventor 扎基·优素福阿尔贝托·洛扎诺·巴列斯特罗斯
Owner SAUDI ARABIAN OIL CO
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