Preparation method of environment-friendly high-softening-point asphalt

A high softening point asphalt, softening point technology, applied in the processing of tar pitch/petroleum pitch/natural pitch, processing tar pitch/petroleum pitch/natural pitch by chemical methods, processing tar pitch/petroleum pitch/natural pitch through mixed fractions Equal direction

Active Publication Date: 2021-11-09
BAOWU CHARCOAL MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the high-temperature asphalt referred to in domestic literature is modified asphalt with a softening point of about 110°C, and the domestic production method of high-softening point asphalt that has high requirements for environmental protection has not been involved

Method used

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  • Preparation method of environment-friendly high-softening-point asphalt

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Experimental program
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Effect test

Embodiment 1

[0020] A kind of preparation method of environment-friendly high softening point asphalt provided by the present embodiment, such as figure 1 As shown, it specifically includes the following steps:

[0021] Add 15kg of ethylene tar and add 5kg of coumarone-indene resin to mix uniformly to form a proportioning solution, then add 80kg of softening point and be 75°C, and the content of quinoline insolubles is 0.02% coal tar pitch to obtain mixed pitch, and mix the pitch at 325 ℃ for air oxidation to obtain pitch with a softening point of 281°C, a coking value of 82%, and a 3,4-benzopyrene content of 150 ppm, which can be used as spinning pitch.

Embodiment 2

[0023] The preparation method of a kind of environment-friendly high softening point asphalt provided in this embodiment specifically comprises the following steps:

[0024] Adopt catalysis, cracking clarified slurry oil 20kg to add 4kg coumarone-indene resin and mix uniformly to form proportioning liquid, then add 76kg softening point and be 80 ℃, the coal tar pitch that quinoline insoluble matter content is 0.03%, obtain mixed pitch, will The mixed asphalt is air oxidized at 330°C to obtain asphalt with a softening point of 276°C, a coking value of 81%, and a 3,4-benzopyrene content of 200ppm, which can be used as coated asphalt.

Embodiment 3

[0026] The preparation method of a kind of environment-friendly high softening point asphalt provided in this embodiment specifically comprises the following steps:

[0027] Adopting ethylene tar and catalysis, the mixture 10kg of cracking slurry oil adds 6kg coumarone-indene resin and mixes uniformly to form proportioning liquid, then adds 84kg softening point and is 64 ℃, and the coal tar pitch that quinoline insoluble matter content is 5%, obtains Mixed asphalt, the mixed asphalt is air oxidized at 325°C to obtain asphalt with a softening point of 256°C, a coking value of 78.2%, and a 3,4-benzopyrene content of 120ppm, which can be used for refractory binder asphalt.

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Abstract

The invention relates to a preparation method of environment-friendly high-softening-point asphalt, which comprises the following steps of: adding coumarone-indene resin into ethylene tar or petroleum asphalt to obtain a proportioning solution; well mixing the proportioning solution with coal tar pitch with the softening point of 30-90 DEG C to obtain mixed asphalt; and oxidizing the mixed asphalt at the temperature of 320-340 DEG C to obtain the environment-friendly high-softening-point asphalt. The method has the following beneficial effects: (1) the coumarone-indene resin and the petroleum asphalt such as ethylene tar or catalytic and cracked clarified slurry oil are more easily and uniformly mixed, and the obtained proportioning solution is also more easily and uniformly mixed with coal tar asphalt with the softening point of 30-90 DEG C; (2) the softening point of the prepared low-content 3, 4-benzopyrene and high-coking-value and high-softening-point asphalt is controlled to be 190-285 DEG C according to requirements, the content of the 3, 4-benzopyrene is 0-300 ppm, and the coking value is 65-85%; and (3) the coking value is increased by 3-5% compared with that of asphalt with the same softening point, the content of 3, 4-benzopyrene is reduced by about 50% compared with similar products, and the asphalt is more environment-friendly.

Description

technical field [0001] The invention relates to a preparation method of an environment-friendly high softening point asphalt, which belongs to the technical field of coal chemical industry. Background technique [0002] At present, the domestic manufacturers of high softening point asphalt research mainly include a small amount of coal-based coated asphalt produced by two manufacturers in Jining and Zhanjiang for coal series, and Liaoyang Xinde and Dalian Huaqiang for oil series. Judging from the domestic literature search, there are few articles published in this area. The high-temperature asphalt produced by Baowu carbon material by flash evaporation method contains high quinoline insolubles, and the high-temperature asphalt and soft asphalt are mixed to obtain modified asphalt. , its composition is reasonable, high softening point asphalt can be obtained after air oxidation, high softening point asphalt can prepare low thermal conductivity foam carbon by low pressure self...

Claims

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Application Information

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IPC IPC(8): C10C3/00C10C3/04
CPCC10C3/00C10C3/04C10C3/005Y02A30/30
Inventor 刘春法武星
Owner BAOWU CHARCOAL MATERIAL TECH CO LTD
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