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Systems and methods for separation and extraction of heterocyclic compounds and polynuclear aromatic hydrocarbons from a hydrocarbon feedstock

一种杂环化合物、多核芳烃的技术，应用在烃加工领域，能够解决高强度、高氢消耗、成本上升等问题

Active Publication Date: 2019-08-13
SAUDI ARABIAN OIL CO
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The cost of HDS / HDN rises relative to the amount of compounds in the crude because HDS / HDN or demetallization requires higher strength and higher hydrogen consumption to remove higher amounts of compounds

Method used

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  • Systems and methods for separation and extraction of heterocyclic compounds and polynuclear aromatic hydrocarbons from a hydrocarbon feedstock
  • Systems and methods for separation and extraction of heterocyclic compounds and polynuclear aromatic hydrocarbons from a hydrocarbon feedstock
  • Systems and methods for separation and extraction of heterocyclic compounds and polynuclear aromatic hydrocarbons from a hydrocarbon feedstock

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Embodiment Construction

[0026] An example of a method for separating and extracting organic heteroatom compounds and polynuclear aromatic hydrocarbons from a hydrocarbon feedstock containing organic heteroatom compounds and polynuclear aromatic hydrocarbons will be described. Processes for the separation and extraction of organic heteroatom compounds and polynuclear aromatics from hydrocarbon feedstocks may include processing crude oil or fractions with high asphaltenes concentrations, followed by removal of heteroatom compounds from the hydrocarbon feedstock by extraction, followed by removal of polynuclear aromatics in a solvent system .

[0027] As used in this disclosure, the term "polynuclear aromatic hydrocarbon" or "PAH" refers to a hydrocarbon compound having multiple aromatic rings, wherein at least two of the multiple aromatic rings are fused, that is, the multiple aromatic rings share at least one side such that at least two carbon atoms are shared by the two aromatic rings. Polynuclear a...

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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 feedstockcontaining 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 systemcomprising an aprotic solvent.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of priority to U.S. Provisional Application Serial No. 62 / 442,003, filed January 4, 2017. technical field [0003] The present specification relates generally to hydrocarbon processing, and more specifically, to systems and methods for the separation, extraction and recovery of heterocyclic compounds, organometallic compounds and polynuclear aromatics 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 transportation fuels such as liquefied petroleum gas (LPG), diesel, gasoline, jet fuel, kerosene and heating oil. Some refineries also produce bitumen, asphaltenes and aromatics. There are other petroleum refineries that produce lube oil, anode grade coke, and benzene, toluene, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G21/16C10G21/20C10G53/06C10G55/02C10G21/08C10G21/00
CPCC10G21/16C10G21/20C10G55/02C10G21/003C10G21/08C10G67/049C10G67/0409C10G53/06C10G51/02C10G2300/206C10G2300/1044C10G2300/1059C10G2300/1096C10G2300/202G01N7/06
Inventor 扎基·优素福阿尔贝托·洛扎诺·巴列斯特罗斯阿哈默德·D·哈马德
Owner SAUDI ARABIAN OIL CO
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