Laboratory extraction method for preparing colloid blended component of needle coke

An extraction method and laboratory technology, applied in the direction of solid solvent extraction, etc., to achieve the effect of reliable raw material source, simple structure and low operating cost
CN109939461AActive Publication Date: 2019-06-28SHANDONG YIDA NEW MATERIAL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG YIDA NEW MATERIAL
Publication Date
2019-06-28

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Abstract

The invention belongs to the technical field of laboratory preparation of needle coke and particularly relates to a laboratory extraction method for preparing a colloid blended component of needle coke. The method comprises the steps of carrying out supercritical extraction on petroleum asphalt in a supercritical state by virtue of low carbon aliphatic hydrocarbon so as to separate a saturated component, an aromatic component and raffinate in the petroleum asphalt, extracting the supercritically extracted raffinate by virtue of a colloid solvent (a non-protonic solvent with medium polarity), and separating raffinate asphaltene so as to obtain a colloid component as a needle coke production raw material, namely the blended component, wherein the mass content of the separated colloid can reach over 92% and even 95%. According to the method, the effective separation of the saturated component, the aromatic component and the asphaltene in the petroleum asphalt is realized, and the colloidas the needle coke production raw material, namely the blended component is extracted. The feasibility of the process for extracting the colloid from the petroleum asphalt is technologically proved, and a reliable raw material source is provided for the further fine separation of the colloid.
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Description

technical field

[0001] The invention belongs to the technical field of preparing needle coke in a laboratory, and in particular relates to a laboratory extraction method for extracting a colloid blending component used for preparing needle coke in a laboratory from petroleum pitch. Background technique

[0002] At present, some domestic enterprises have been able to industrialize the production of needle coke, and some domestic scholars have also conducted research on petroleum asphalt, the raw material for producing oil-based needle coke, and most of them agree that petroleum asphalt is rich in short side chains and linear connections. Polycyclic (3-4 ring) aromatics are high-quality raw materials for producing needle coke, but there are few reports on the quantitative impact of colloid content on the quality of needle coke.

[0003] Colloid is a component of petroleum asphalt. At present, there is no unified analysis method and definite definition in the world. The "Petro...

Claims

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