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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

Active Publication Date: 2019-06-28
SHANDONG YIDA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there is no extraction method targeting colloids in petroleum asphalt in China

Method used

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  • Laboratory extraction method for preparing colloid blended component of needle coke
  • Laboratory extraction method for preparing colloid blended component of needle coke
  • Laboratory extraction method for preparing colloid blended component of needle coke

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] A kind of laboratory extraction method that is used for preparing the colloid blending component of needle coke, comprises the steps:

[0061] (1) After the raw material asphalt is temporarily stored in the raw material asphalt tank 2, it is sent to the raw material / solvent static mixer 5 through the raw material asphalt pump 4; the low-carbon aliphatic hydrocarbon is passed from the low-carbon aliphatic hydrocarbon solvent tank 1 through the low-carbon aliphatic hydrocarbon solvent pump 3 Send into the raw material / solvent static mixer 5; low-carbon aliphatic hydrocarbons and raw material pitch enter the supercritical extraction tower 8 after fully mixing in the raw material / solvent static mixer;

[0062] (2) Low-carbon aliphatic hydrocarbon carries out supercritical extraction to the saturated content in the raw material pitch, the aromatic component in the supercritical extraction tower 8, and the saturated component in the raw material pitch, the aromatic component d...

Embodiment 2

[0069] The present invention also provides a laboratory extraction method for colloid blending components used to prepare needle coke, comprising the following refinement steps:

[0070] (1) join a certain amount of low-carbon aliphatic hydrocarbons in low-carbon aliphatic hydrocarbon solvent tank 1 and supercritical extraction tower 8 earlier; Then a certain amount of colloidal solvent is added in colloidal solvent tank 14; Then a certain amount The raw asphalt is added to the raw asphalt tank 2.

[0071] (2) After the raw asphalt is temporarily stored in the raw asphalt tank, turn on the low-carbon aliphatic hydrocarbon solvent pump 3 to inject the low-carbon aliphatic hydrocarbon into the raw material / solvent static mixer 5, and simultaneously turn on the raw asphalt pump 4 to inject the raw asphalt into the raw material / solvent static mixer Mixer 5: The volume ratio of low-carbon aliphatic hydrocarbons and raw material pitch in the raw material / solvent static mixer is 2:1-...

Embodiment 3

[0080] Embodiment 3: Raw material asphalt is selected Kuwaiti vacuum residue (raw material 1 four-component composition is shown in Table 1); Low-carbon aliphatic hydrocarbon is selected propane; Colloidal solvent is selected tetrahydrofuran; The mixing volume ratio of propane and Kuwait vacuum residue is 4 : 1; the mixing volume ratio of tetrahydrofuran and supercritical raffinate is 3:1; the operating pressure of the supercritical extraction tower is 4.5MPa, and the operating temperature is 110°C; the operating pressure of the supercritical recovery tower is 1.5MPa, and the operating temperature is 110°C; The operating pressure of the residue collection tank is 1.5MPa, and the operating temperature is 110°C; the operating pressure of the colloid extraction tower is 0.05MPa, and the operating temperature is 50°C; the operating pressure of the colloid solvent recovery tower is 0.05MPa, and the operating temperature is 100°C; MPa, the operating temperature is 100°C.

[0081] Ta...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D11/02
Inventor 徐金城彭莉廖虎王继银李军树郭冲王秋波
Owner SHANDONG YIDA NEW MATERIAL
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