Method for preparing mesophase asphalt by using catalytic cracking slurry oil

A technology of catalytic cracking oil slurry and mesophase pitch, which is applied in the field of petroleum pitch, can solve the problems of limited use range, no economic benefits, waste of resources, etc., achieve low softening point, realize large-scale industrial production, and reduce waste Effect

Active Publication Date: 2021-10-22
BEIJING UNIV OF CHEM TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the petrochemical industry, catalytic cracking oil slurry is an important low-value-added by-product, which is mainly used as a blending component of fue

Method used

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  • Method for preparing mesophase asphalt by using catalytic cracking slurry oil
  • Method for preparing mesophase asphalt by using catalytic cracking slurry oil

Examples

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Example Embodiment

[0029] Example 1:

[0030] The first step was added 0.01 g of a small reduction oxide graphene combination (oxygen content of 1%) and 400 g of catalytic cracking oil pulp to a high temperature and high pressure reactor, and a nitrogen purge replacement air was closed. The rate of 5 ° C / min was raised to 150 ° C and stirred (500 rpm) for 1 h, and the graphene was uniform in the oil pulley. Then rose at a rate of 2 ° C / min to 430 ° C, stirred (300 rpm), and the pressure is self-boost during the reaction. When the insulation process ends, the internal pressure is released, and the nitrogen purge is removed from the light component, and the mixing device is stopped, and the reaction kettle is cooled to room temperature, obtain 300 g of petroleum asphalt, and the softening point is 120 ° C, the molecular weight is 1.72, crystal layer The spacing is 0.3483 nm.

[0031] In the second step, the above 300 g of petroleum asphalt was pulverized and placed in a high temperature and high p...

Example Embodiment

[0033] Example 2

[0034] The amount of reductant oxidation graphene was added from 0.01 g to 0.04 g, and the other conditions were as in Example 1, the obtained petroleum asphalt softening point was 135 ° C, the molecular weight distribution was 1.70, the crystal layer spacing was 0.3481 nm, and the final prepared intermediate phase The softening point of the asphalt is 265 ° C, the intermediate phase content is 95%. The foam thermal conductivity prepared by the intermediate phase asphalt was 106 W / (m · k); the modulus of carbon fibers was 510 GPa, and the thermal conductivity was 983 w / (m · k).

Example Embodiment

[0035] Example 3

[0036]The amount of reductant oxidation graphene is added from 0.01 g to 0.08 g, and the other conditions are as in Example 1, the obtained petroleum asphalt softening point is 142 ° C, the molecular weight distribution is 1.66, the crystal layer spacing is 0.3479 nm, and the final prepared intermediate phase The softening point of the asphalt is 261 ° C, the intermediate phase content is 97%. The foam thermal conductivity prepared by the intermediate phase asphalt was 115 w / (m · k); the modulus of carbon fibers was 550 GPa, and the thermal conductivity was 1008 w / (m · k).

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Abstract

The invention discloses a method for preparing mesophase asphalt by using catalytic cracking slurry oil, and belongs to the field of petroleum pitch. According to the method, a low-added-value byproduct, namely catalytic cracking slurry oil, is taken as a raw material, graphene is taken as an additive, the petroleum asphalt with a high softening point, narrow molecular weight distribution and high regularity is prepared in the first step, and the high-performance mesophase asphalt is prepared through direct thermal polycondensation in the second step. According to the method, the catalytic cracking oil slurry is adopted as the raw material, a novel method for preparing the high-performance mesophase asphalt is developed, the economic added value of the high-performance mesophase asphalt is increased, the preparation process is simple in technology, and the finally obtained mesophase asphalt is low in softening point and high in mesophase content.

Description

technical field [0001] The invention relates to a method for preparing mesophase pitch, which uses catalytic cracking oil slurry as a raw material to prepare mesophase pitch through a two-step method, and belongs to the field of petroleum asphalt. Background technique [0002] Catalytic cracking oil slurry refers to the waste oil slurry rich in aromatics discharged from the crude oil refining process after passing through the catalytic cracking unit. It is the main by-product of the catalytic cracking process, and the catalytic cracking process is the main One of the refining process. The by-product oil slurry produced by catalytic cracking units in my country can reach more than 10 million tons every year. In the petrochemical industry, catalytic cracking oil slurry is an important low-value-added by-product, which is mainly used as a blending component of fuel oil or directly as heavy fuel oil, which limits its application range and does not bring Higher economic benefit...

Claims

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Application Information

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IPC IPC(8): C10G50/00C10C3/02
CPCC10G50/00C10C3/02
Inventor 马兆昆刘昱宏蒋兴家房廷浩张型伟
Owner BEIJING UNIV OF CHEM TECH
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