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A kind of fractional extraction method of FCC oil slurry solid content

A technology of fractional extraction and solid content, which is used in the petroleum industry, cracking, catalytic cracking, etc., can solve the problem of not being able to comprehensively and accurately reflect the original state of solid content in the oil slurry, and avoid incomplete enrichment. Effect

Active Publication Date: 2022-04-05
GUANGDONG UNIV OF PETROCHEMICAL TECH
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problem that the existing commonly used FCC oil slurry solid content extraction method cannot comprehensively and accurately reflect the original state of the solid content in the oil slurry, the present invention provides a graded extraction method for FCC oil slurry solid content

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: the fractional extraction method of FCC oil slurry solid content, concrete extraction method is as follows:

[0026] (1) Heat the catalytic cracking oil slurry to 50°C and stir at constant temperature for 20 min;

[0027] (2) Take the pretreated FCC oil slurry, dilute it with dual solvent n-heptane-ethanol (volume ratio 1:2), and ultrasonically vibrate the diluted FCC oil slurry for later use;

[0028] (3) Filter the diluted oil slurry with a filter membrane with a pore size of 0.22 μm;

[0029] (4) Extract the solid content obtained after filtration with the dual solvent described in step (2), until the liquid in the extractor is colorless and transparent, take out the solid content after extraction, dry it, and set aside;

[0030] (5) Extract part of the solid content obtained in step (4) with the solvent cyclohexane until the liquid in the extractor is colorless and transparent, take out the extracted solid content and dry it for later use;

[0031] (...

Embodiment 2

[0032] Embodiment 2: the fractional extraction method of FCC oil slurry solid content, concrete extraction method is as follows:

[0033] (1) Heat the FCC oil slurry to 55°C and stir at constant temperature for 20 min;

[0034] (2) Take the pretreated FCC oil slurry, dilute it with dual-solvent petroleum ether (60-90)-toluene (volume ratio 1:2), and ultrasonically vibrate the diluted FCC oil slurry for later use;

[0035] (3) Filter the diluted oil slurry with a filter membrane with a pore size of 0.22 μm;

[0036] (4) Extract the solid content obtained after filtration with the dual-solvent petroleum ether (60-90)-toluene (volume ratio 1:2) described in step (2) until the liquid in the extractor is colorless Transparent, take out the extracted solids and dry them for later use;

[0037] (5) Extract part of the solid content obtained in step (4) with the solvent benzene until the liquid in the extractor is colorless and transparent, take out the extracted solid content and d...

Embodiment 3

[0039] Embodiment 3: the graded extraction method of FCC oil slurry solid content, concrete extraction method is as follows:

[0040] (1) Heat the FCC oil slurry to 60°C and stir at constant temperature for 20 min;

[0041] (2) Take the pretreated FCC oil slurry, dilute it with dual solvent n-heptane-dichloroethane (volume ratio 1:2), and ultrasonically vibrate the diluted FCC oil slurry for later use;

[0042] (3) Filter the diluted oil slurry with a filter membrane with a pore size of 0.22 μm;

[0043] (4) Extract the solid content obtained after filtration with the dual solvent n-heptane-dichloroethane (volume ratio 1:2) described in step (2) until the liquid in the extractor is colorless and transparent shape, take out the extracted solids and dry them for later use;

[0044] (5) Extract part of the solid content obtained in step (4) with the solvent xylene until the liquid in the extractor is colorless and transparent, take out the extracted solid content and dry it for...

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Abstract

The invention discloses a method for graded extraction of solid content in FCC oil slurry, comprising: (1) pretreating the FCC oil slurry; (2) taking the pretreated FCC oil slurry, and using dual solvents A-B to Dilute, and then ultrasonically oscillate; (3) filter the diluted oil slurry; (4) extract the solid content obtained after filtration with the dual solvent described in step (2), until the extractor The medium liquid is colorless and transparent and dry; (5) Take part of the solid content obtained in step (4) and extract it with solvent C until it is colorless and transparent and dry; (6) Take part of the solid content obtained in step (5) The solid content was extracted with solvent D until it was colorless and transparent, and the extracted solid content was taken out and dried. The invention effectively avoids the problem of incomplete enrichment of solids or increased impurities in conventional extraction methods, can more comprehensively reflect the real situation of solids in FCC oil slurry, and can obtain solids with different encapsulation degrees.

Description

technical field [0001] The invention relates to a method for extracting solid content, in particular to a method for fractional extraction of solid content in FCC oil slurry. Background technique [0002] FCC oil slurry is a by-product of the catalytic cracking process. Because it contains a large amount of short-chain polycyclic aromatic hydrocarbons, it has become a potential raw material for the production of high value-added chemical products such as activated carbon, needle coke and carbon fiber. However, FCC oil slurry generally contains more catalyst particles and coke powder, and these solids seriously limit its efficient utilization, so it is necessary to remove the solids in FCC oil slurry. Before removing the solids, it needs to be extracted and separated from the FCC oil slurry for detailed characterization, and then an appropriate method for removing solids should be selected according to its properties. Accurate solid content extraction method is an important ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G11/18
CPCC10G11/182
Inventor 林存辉周如金吴世逵段林海张尤华曾兴业王丽单书峰张战军
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH
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