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Raw material asphalt for carbon-based new material and production process thereof

A production process and new material technology, which can be used in chemical processing of tar pitch/petroleum pitch/natural pitch, petroleum industry, hydrocarbon oil treatment, etc. The effect of excellent aggregate structure, variety and narrow molecular weight distribution

Active Publication Date: 2020-10-27
鞍钢化学科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It mainly solves the existing problems of complex process, high equipment requirements, high cost and difficult industrialization process in the existing method for preparing mesophase pitch.

Method used

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  • Raw material asphalt for carbon-based new material and production process thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] Such as figure 1 As shown, in the present embodiment, the raw material low-temperature coal tar that is stored in the raw oil storage tank 1 and whose quinoline insoluble matter content is 1.53wt% is sent into No. 1 vacuum distillation tower 3 through No. 1 heating furnace 2, The temperature at the top of the tower is controlled at 240°C, the temperature at the bottom of the tower is controlled at 350°C, and the vacuum degree is controlled at 0.08MPa. The gas phase line at the top of the tower gets by-product light oil and sends it to light oil storage tank 5; the remaining product at the bottom of the tower is sent to heavy oil storage tank 4. The heavy oil in the heavy oil storage tank 4 is sent to the polymerization reactor 6 for asphalting reaction. First, high-purity nitrogen is used to replace the air in the polymerization reactor 6 so that the initial pressure is 0.05 MPa, and the pressure is self-boosted; Raise the temperature from normal temperature to 360°C at...

Embodiment 2

[0085] The raw material medium-temperature coal tar with quinoline insoluble matter content of 2.78% is sent to No. 1 vacuum distillation tower through No. 1 heating furnace. The temperature at the top of the tower is controlled at 238 ° C, the temperature at the bottom of the tower is controlled at 340 ° C, and the vacuum degree is controlled at 0.08 MPa, the gas phase line at the top of the tower obtains light oil as a by-product, and the remaining product at the bottom of the tower is sent to the polymerization reactor for asphaltization reaction. First, high-purity nitrogen is used to replace the air in the polymerization reactor so that the initial pressure is 0.1MPa, and the pressure is self-boosted, and then the temperature is raised from normal temperature to 360°C at a rate of 2°C / min, and the constant temperature is kept for 7 hours. The final pressure in the kettle is maintained At 0.85MPa, the polymerized asphalt is prepared, the softening point of the polymerized a...

Embodiment 3

[0093] The raw material high-temperature coal tar with quinoline insoluble matter content of 3.98% is sent to No. 1 vacuum distillation tower through No. 1 heating furnace. MPa, the gas phase line at the top of the tower obtains light oil as a by-product, and the remaining product at the bottom of the tower is sent to the polymerization reactor for asphaltization reaction. First, high-purity nitrogen is used to replace the air in the polymerization reactor so that the initial pressure is 0.4MPa, and the pressure is self-boosted, and then the temperature is raised from normal temperature to 340°C at a rate of 5°C / min, and the constant temperature stays for 6 hours. The final pressure in the kettle remains At 1.0MPa, polymerized asphalt is prepared, the softening point of polymerized asphalt is 46°C, and the density is 1.12g / cm 3 .

[0094] Cool the polymerized asphalt to about 200°C, and send it to the No. 1 mixing tank with the mass ratio of 4:1 with the washing oil. The mixi...

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Abstract

The invention relates to a raw material asphalt for a carbon-based new material and a production process thereof. The production process comprises the following steps of: feeding a residual product obtained by removing light oil from raw material oil through a reduced pressure distillation tower into a polymerization reaction kettle, and carrying out pressurized asphalting reaction to obtain polymerized asphalt; settling and separating the polymerized asphalt and a solvent I to obtain aromatic-rich light oil and aromatic-rich heavy oil; mixing and separating the aromatic-rich heavy oil and thesolvent I to obtain a soluble component and an insoluble component; carrying out reduced pressure distillation on the aromatic-rich light oil and the soluble component to obtain light refined asphalt; carrying out hydrogenation reaction on the light refined asphalt and a hydrogen supply reagent to obtain hydrogenated asphalt, and further acquiring refined hydrogenated asphalt; mixing and separating the insoluble component, the solvent I and a solvent II to obtain filtrate and filter residue; and distilling the filtrate under reduced pressure to obtain heavy refined asphalt. The process is used for preparing the high-quality asphalt raw material which is narrow in molecular weight distribution, moderate in molecular weight, highly ordered in molecular arrangement, good in flowability, excellent in aggregation state structure and stable in thermal reaction activity.

Description

technical field [0001] The invention relates to the technical field of high-efficiency utilization of coal tar pitch, in particular to a raw material pitch for carbon-based new materials and a production process thereof. Background technique [0002] Heavy aromatic hydrocarbons (such as coal tar pitch, petroleum pitch and various heavy oils, etc.) are bulk products separated from coal tar processing and petroleum processing. Material development and preparation are crucial. Heavy aromatic hydrocarbons are complex mixtures of condensed aromatic hydrocarbons, featuring high molecular weight, high aromaticity, high condensation degree, high carbon content, relatively low heteroatom and metal content, etc., and are a preparation functional type High-quality precursors for carbon-based new materials. [0003] The properties of starting materials and preparation conditions are important factors affecting the structure and performance of the final product. The chemical compositio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10C3/02C10G57/00
CPCC10C3/02C10G57/00
Inventor 刘海丰何莹张大奎穆春丰
Owner 鞍钢化学科技有限公司
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