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Process for co-production of high-quality carbon black raw oil, refined asphalt and binder asphalt

A technology of binder asphalt and refined asphalt, which is applied in the direction of processing tar asphalt/petroleum asphalt/natural asphalt by distillation, and processing tar asphalt/petroleum asphalt/natural asphalt by selective extraction, which can solve the problems affecting the quality of refined asphalt downstream products, Unreasonable molecular weight distribution of refined asphalt, etc., to achieve the effects of low cost, simple operation and low energy consumption

Inactive Publication Date: 2012-08-08
UNIV OF SCI & TECH LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process does not separate the low molecular weight components in soft asphalt, which makes the molecular weight distribution of refined asphalt unreasonable and affects the quality of refined asphalt downstream products
At the same time, the process of this process does not separate the high value-added carbon black raw material oil contained in the light phase component

Method used

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  • Process for co-production of high-quality carbon black raw oil, refined asphalt and binder asphalt
  • Process for co-production of high-quality carbon black raw oil, refined asphalt and binder asphalt
  • Process for co-production of high-quality carbon black raw oil, refined asphalt and binder asphalt

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Experimental program
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Effect test

Embodiment 1

[0035] Described aromatic solvent is heavy benzene solvent oil, and described aliphatic solvent is wax oil, and the mass ratio of described heavy benzene solvent oil and wax oil is 1: 1, and described dual solvent and crude coal tar The asphalt is mixed according to the mass ratio of 0.65:1 and then injected into the extraction separator. The sedimentation separation temperature is controlled at 135°C and the sedimentation velocity is controlled at 126mm / h for extraction, flocculation and sedimentation separation. , different position controls to take out the light phase component mass ratio 5t%, next light phase component mass ratio 65%, heavy phase component mass ratio 30%, three kinds of components are separated through rectification, control rectification column under normal pressure When the tower top temperature is 280°C and the side line temperature of the heavy phase rectification tower is 295°C, after removing the solvent, the yield of carbon black raw material oil is ...

Embodiment 2

[0037] Described aromatic solvent is heavy benzene solvent oil, and described aliphatic solvent is wax oil, and the mass ratio of described heavy benzene solvent oil and wax oil is 1: 1, is formulated into double solvent, and described double Solvent and crude coal tar pitch were mixed at a mass ratio of 0.8:1 and then injected into the extraction separator. The sedimentation temperature was controlled at 135°C and the sedimentation velocity was controlled at 178mm / h for extraction, flocculation, and sedimentation. According to the principle of density distribution, From the upper, middle and lower positions of the separator, the mass ratio of light phase components is 6%, the mass ratio of sub-light phase components is 63%, and the mass ratio of heavy phase components is 31%. Each component is separated and removed by rectification. Solvent, the temperature of the top of the rectification tower is controlled at 280°C under normal pressure, and the side line temperature of the ...

Embodiment 3

[0039] Described aromatic solvent is washing oil, and described aliphatic solvent is wax oil, and the mass ratio of described washing oil and wax oil is 1.1: 1, and described double solvent and crude coal tar pitch are mixed by 1.1: The mass ratio of 1 is mixed and injected into the extraction separator. The temperature of sedimentation and separation is controlled at 135°C, and the sedimentation velocity is controlled at 182mm / h for extraction and flocculation separation. According to the principle of density distribution, the separation is controlled from the upper, middle and lower positions of the separator. Take out 7% of the light phase component mass ratio, 67% of the next light phase component mass ratio, and 26% of the heavy phase component mass ratio, and carry out rectification and separation of the three components obtained, and control the rectification column under normal pressure. The top temperature is 280°C, the side line temperature of the heavy phase rectific...

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Abstract

The invention relates to deep processing technology of coal-tar asphalt, in particular to the process for co-production of high-quality carbon black raw oil, refined asphalt and binder asphalt. The process comprises a step of mixing crude coal-tar asphalt and a solvent in a certain ratio and injecting the mixture into an extraction separator for separating, wherein the process comprises technicalsteps: mixing the crude coal-tar asphalt and the solvent in a certain ratio and injecting the mixture into the extraction separator and performing extraction, flocculation, sedimentation and separation; extracting a light phase component, a secondary light phase component and a heavy phase component from an upper position, a middle position and a lower position of the separator respectively according to a density distribution principle; and controlling the ratio between double solvents and the ratio between the double solvent and the crude coal-tar asphalt, wherein the double solvents consistof an aromatic solvent and an aliphatic solvent. The process not only can obtain the high-quality carbon black raw oil with a high additional value and prepare pure refined asphalt and carbon for needle coke and the binder asphalt for a refractory material product, and but also has no waste emitted in the overall technical process.

Description

technical field [0001] The invention relates to a coal tar pitch deep processing technology. In particular, it is a process for co-producing high-quality carbon black raw material oil, refined asphalt and binder asphalt. Carbon black raw material oil is used to produce high-grade conductive carbon black, refined pitch is used to prepare coal needle coke and coal tar pitch carbon fiber, and binder pitch is used as binder for carbon and refractory products. Background technique [0002] At present, the production of coal tar-based carbon black raw material oil is to carry out preliminary distillation of crude coal tar to distill light oil, phenol oil, naphthalene oil and washing oil, and then add the remaining coal tar soft pitch to an appropriate proportion of anthracene oil for adjustment to produce Obtain carbon black raw material oil. This preparation method does not separate the heavy components and primary quinoline insolubles in coal tar, and the obtained carbon black...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10C3/08C10C3/06
Inventor 赵雪飞赖仕全高丽娟张雅茹
Owner UNIV OF SCI & TECH LIAONING