Method for increasing asphalt softening point

A technology of softening point and asphalt, applied in the processing of tar pitch/petroleum pitch/natural pitch, processing tar pitch/petroleum pitch/natural pitch by distillation, processing tar pitch/petroleum pitch/natural pitch by chemical methods, etc., can Solve the problems that the softening point of asphalt is difficult to meet the use requirements and the softening point is low, and achieve the effect of high softening point of the product, simple preparation process and short time consumption

Inactive Publication Date: 2012-02-29
BEIJING ZHONGSHIHONG INSTALLATION ENG
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Asphalt is mainly used for road paving, repair and maintenance. With the development of technology and the continuous improvement of environmental protection requirements, asphalt is used more and more widely. Among them, asphalt has become a main source of raw materials for the production of activated carbon materials, but In the current asphalt preparation process, especially the softening point of the asphalt used to make carbon fiber is difficult to meet the requirements of use, and there is a defect of low softening point

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add petroleum asphalt with a carbon content of more than 50% to the reactor, and heat the reactor to 200°C to prepare molten asphalt; use a blower to blow the oxidant permanganate, which accounts for 5% of the amount of the asphalt, from the bottom of the reactor Potassium is fed into the reaction kettle to oxidize the molten asphalt at high temperature and at a high speed; the oxidized molten asphalt is added to the atomization conditioning tower at a temperature of 400°C, and flashed at high temperature; the flashed asphalt is The molten asphalt is input into an emulsifier at a temperature of 350°C, and an emulsifier is added for high-speed emulsification treatment; after cooling down to below 280°C, the material is discharged to obtain asphalt with a high softening point.

Embodiment 2

[0022] Add coal tar pitch with a carbon content of more than 50% into the reactor, and heat the reactor to 250°C to prepare molten pitch; use a blower to send the oxidant naphthalene, which accounts for 7% of the pitch, into the reactor from the bottom of the reactor In the reaction kettle, the molten asphalt is oxidized at high temperature and at a high speed; the oxidized molten asphalt is added to the atomization conditioning tower at a temperature of 450°C, and flashed at high temperature; the flashed molten asphalt is input into Add emulsifier to the emulsifier at 400°C for high-speed emulsification; cool down to below 300°C and discharge to obtain asphalt with high softening point.

Embodiment 3

[0024] Add natural asphalt with a carbon content of more than 50% into the reactor, and heat the reactor to 220°C to prepare molten asphalt; use a blower to send ozone, which accounts for 15% of the asphalt, into the reaction from the bottom of the reactor In the kettle, the molten asphalt is oxidized at high temperature and at a high speed; the oxidized molten asphalt is added to the atomization conditioning tower with a temperature of 450°C, and flashed at high temperature; the flashed molten asphalt is input into Add an emulsifier to the emulsifier at a temperature of 300°C for high-speed emulsification; cool down to below 270°C and discharge to obtain high softening point asphalt.

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Abstract

The invention discloses a method for increasing an asphalt softening point. Firstly, asphalt is added into a reaction kettle, the reaction kettle is heated to a temperature of 200 to 280 DEG C, and melting asphalt is confected; then an air blower is used to feed oxidizing agents into the reaction kettle from the bottom of the reaction kettle, and the melting asphalt is oxidized at a high temperature and a high speed; afterwards, the oxidized melting asphalt is added into an atomizing and conditioning tower at a temperature of 380 to 550 DEG C and is rapidly flashed under a high temperature condition; later, the flashed melting asphalt is imported into an emulsifying machine at a temperature of 300 to 400 DEG C, and emulsifying agents are added into the emulsifying machine to emulsify the flashed melting asphalt at a high speed; and finally, after the emulsified melting asphalt is cooled and the temperature is reduced to below 300 DEG C, materials are emptied and the asphalt with a high softening point is acquired. According to the method, through adopting a manner of oxidizing the asphalt melt at a high speed and a high temperature, rapidly flashing the asphalt melt and emulsifying the asphalt melt at a high speed, the asphalt with the high softening point is obtained; and the method has the characteristics of simple preparation process, short time consumption, high product softening point and low comprehensive cost.

Description

technical field [0001] The invention relates to the technical field of asphalt preparation, in particular to a method for increasing the softening point of asphalt. Background technique [0002] Asphalt is mainly used for road paving, repair and maintenance. With the development of technology and the continuous improvement of environmental protection requirements, asphalt is used more and more widely. Among them, asphalt has become a main source of raw materials for the production of activated carbon materials, but In the current asphalt preparation process, especially the softening point of the asphalt used to make carbon fiber is difficult to meet the requirements of use, and there is a defect of low softening point. Contents of the invention [0003] The purpose of the present invention is to provide a method for increasing the softening point of asphalt with a high softening point against the defects of the prior art. [0004] The purpose of the present invention is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10C3/00C10C3/04C10C3/06
Inventor 张吉太刘明秋邹开良周德胜
Owner BEIJING ZHONGSHIHONG INSTALLATION ENG
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