Preparation method of petroleum-based high-softening-point asphalt

A high-softening-point asphalt and petroleum-based technology, which can be used in the thermal processing of tar pitch/petroleum pitch/natural pitch, chemical processing of tar pitch/petroleum pitch/natural pitch, and the petroleum industry, which can solve the problem of reducing the inherent physical properties of carbon , negative electrode material performance degradation, high content of heteroelements, etc., to achieve the effect of increasing capacity and reducing the content of quinoline insolubles

Active Publication Date: 2021-02-02
OCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Causes a problem of degrading the performance of anode materials using petroleum-based derived high softening point pitches
In addition, since petroleum-based high-softening-point pitches have a characteristic of high content of heteroelements, there is a problem of lowering the intrinsic properties of carbon.

Method used

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  • Preparation method of petroleum-based high-softening-point asphalt
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  • Preparation method of petroleum-based high-softening-point asphalt

Examples

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preparation example Construction

[0017] One embodiment of the present invention provides a method for preparing petroleum-based high softening point asphalt, which is characterized in that it includes: step (a), preparing the content of indene and indene derivatives below 3% by weight by pretreating the petroleum-based residual oil raw material , styrene and styrene derivatives content of 0.3% by weight or less and petroleum-based residual oil with a softening point of 20°C to 150°C (step S1); step (b), mixing oxidizing properties into the above-mentioned petroleum-based residue oxidative heat treatment (step S2) while heating the gas; and step (c), performing decompression heat treatment of heating the product of step (b) under reduced pressure (step S3).

[0018] Firstly, the preparation method of the present invention includes step (a), preparing the indene and indene derivatives content of 3 weight percent or less, and the styrene and styrene derivatives content of 0.3 weight percent or less by pretreating...

Embodiment 1

[0053] Using indene, indene derivatives, styrene and pyrolysis fuel oil (PFO) with a content of 9.47% by weight as raw material, petroleum-based residue was prepared by vacuum distillation under the pressure of 150torr and temperature of 200°C . In this case, the softening point of the prepared petroleum-based residue was 38°C, the content of indene and indene derivatives was 1.8% by weight, and the content of styrene and styrene derivatives was 0.12% by weight.

[0054] 800 g of the above-mentioned petroleum-based residue was put into a reactor, and air was injected into the reactor at a flow rate of 0.7 L / min, and oxidation heat treatment was performed at a temperature of 360° C. for 4 hours. Next, the pressure was reduced to a pressure of 100 torr, and a pitch was prepared by performing a heat treatment under reduced pressure at a temperature of 380° C. for 5 hours.

Embodiment 2

[0056] Using the same pyrolysis fuel oil (PFO) as in Example 1 as a raw material, a petroleum-based residue was prepared by atmospheric distillation at a temperature of 320° C. under normal pressure. In this case, the softening point of the prepared petroleum-based residue was 43°C, the content of indene and indene derivatives was 1.4% by weight, and the content of styrene and styrene derivatives was 0.08% by weight.

[0057] 800 g of the above-mentioned petroleum-based residue was put into a reactor, and air was fed into the reactor at a flow rate of 0.5 L / min, and oxidation heat treatment was carried out at a temperature of 370° C. for 4 hours. Next, the pressure was reduced to a pressure of 100 torr, and a pitch was prepared by performing a heat treatment under reduced pressure at a temperature of 380° C. for 5 hours.

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Abstract

The invention relates to a preparation method of petroleum-based high-softening-point asphalt, in particular to a preparation method of petroleum-based high-softening-point asphalt which is low in quinoline insoluble (QI) content, adjustable in beta resin content and low in content of multiple heteroatoms such as nitrogen, sulfur and oxygen.

Description

technical field [0001] The present invention relates to a preparation method of petroleum-based high softening point asphalt, in more detail, relates to a petroleum-based asphalt with low content of quinoline insolubles (QI), adjustable β resin content, and low content of multiple heteroatoms such as nitrogen, sulfur and oxygen. Preparation method of softening point bitumen. Background technique [0002] Generally, coal tar pitch is used for various carbon electrodes and graphite molded bodies. However, since coal tar pitch has problems arising from pretreatment problems and environmental regulations, petroleum-based derived high softening point pitches are used instead of coal tar pitch. [0003] Petroleum-derived high softening point pitch is used for coke, carbon fiber, negative electrode materials for lithium secondary batteries, pitch for coating negative electrode materials, silicon (Si) composite negative electrode materials, or various additives. However, when petr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10C3/02
CPCC10C3/02C10C3/002C10G27/04C10G27/14C10G31/06C10G2300/4006C10G2300/4012C10G2300/4018C10G2300/202
Inventor 宋永石李周炯金敬烈金容逸
Owner OCI
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