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Coal liquefaction residue modified asphalt and preparation method and application thereof

A technology of coal liquefaction residue and modified asphalt, which is applied in the processing of tar pitch/petroleum pitch/natural pitch, processing tar pitch/petroleum pitch/natural pitch through mixed fractions, and the petroleum industry, which can solve the problems of increasing product production costs and Operating costs, poor control of the softening point of modified asphalt, increased process complexity and other issues, to achieve the effect of high controllability of product properties, uniform phase, and small reproducibility error

Active Publication Date: 2016-07-27
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But usually in the field of road application, construction field, waterproof membrane application and other fields, the softening point of these asphalt is still high, and the preparation process is complicated, and the production cost is high
[0007] The above-mentioned technical solutions will undoubtedly increase the complexity of the process, increase the production cost and operation cost of the product; and the control of the softening point of the modified asphalt is poor, and the reproducibility error of the softening point is usually above 10°C

Method used

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  • Coal liquefaction residue modified asphalt and preparation method and application thereof
  • Coal liquefaction residue modified asphalt and preparation method and application thereof
  • Coal liquefaction residue modified asphalt and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] This example illustrates the method of the present invention for preparing coal liquefaction residue modified asphalt.

[0047] (1) 55% by weight of Additive A and 45% by weight of Additive B are prepared and mixed uniformly to obtain a composite additive, and the measured aromatic content is 62% by weight.

[0048] (2) heating 45 parts by weight of the composite additive to 190° C. under stirring; then slowly adding 55 parts by weight of coal liquefaction residue A;

[0049] (3) After adding the coal liquefaction residue A, continue stirring at 190° C. for 40 minutes to obtain the coal liquefaction residue modified asphalt.

[0050] The obtained coal liquefaction residue modified bitumen was observed by photography. Such as Figure 1a As shown, it can be seen that the coal liquefaction residue modified asphalt has a uniform phase and no oil phase segregation. The softening point was measured to be 64.5°C.

[0051] The above experiment was repeated twice, and the obt...

Embodiment 2

[0054] This example illustrates the method of the present invention for preparing coal liquefaction residue modified asphalt.

[0055] (1) 45 parts by weight of additive A (75.2% by weight of aromatic content) was heated to 250° C. under stirring; then 55 parts by weight of coal liquefaction residue B were slowly added;

[0056] (2) After adding the coal liquefaction residue, continue stirring at 250° C. for 20 minutes to obtain the coal liquefaction residue modified asphalt.

[0057] The obtained coal liquefaction residue modified bitumen was observed by photography. Such as image 3 As shown, it can be seen that the coal liquefaction residue modified asphalt has a uniform phase and no oil phase segregation. The softening point was determined to be 56°C.

[0058] Same as Example 1, the above experiment was repeated twice, and the reproducibility error of the softening point of the obtained coal liquefaction residue modified asphalt was less than 3°C, indicating that the re...

Embodiment 3

[0061] According to the method of Example 1, the difference is that in step (2), "heat 3 parts by weight of the composite additive to 190 °C under stirring; then slowly add 97 parts by weight of coal liquefaction residue A", replace "the 45 parts by weight of composite additives are heated to 190°C under stirring; then 55 parts by weight of coal liquefaction residue A" are slowly added.

[0062] Obtained coal liquefaction residue modified asphalt, and carried out photographic observation, it can be seen that the phase is uniform, no oil phase is separated out, and the softening point of the obtained homogeneous modified asphalt product is 170°C.

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Abstract

The invention relates to the field of coal liquefaction residue modified asphalt and discloses coal liquefaction residue modified asphalt and a preparation method and application thereof.The coal liquefaction residue modified asphalt is obtained by mixing coal direct liquefaction residues and an additive, the aromatic content in the additive is 60% or above, and the additive is catalytic cracking oil slurry, extracted oil, coking oil, cracking tail oil or aromatic oil or a mixture formed by mixing at least two of catalytic cracking oil slurry, extracted oil, coking oil, cracking tail oil and aromatic oil.The process is simple, operation is easy, production cost is low, and product property controllability is high.

Description

technical field [0001] The invention relates to the field of coal liquefaction residue modified asphalt, in particular to a coal liquefaction residue modified asphalt and its preparation method and application. Background technique [0002] Coal direct liquefaction residue is a by-product of the coal liquefaction process. It is a black solid substance with high asphaltenes and high sulfur content, and its softening point is usually higher than 180°C. The high softening point limits the application range of this bitumen. Especially in the field of road application, construction field, waterproof membrane application and application field as binder, etc., due to the high softening point of coal liquefaction residue, it is usually unusable and can only be used as a road asphalt modifier, such as patent CN1827697A and CN101161778B. [0003] CN103740396A discloses a modification method of direct coal liquefaction high-temperature asphalt, comprising: adding heavy oil and a cros...

Claims

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Application Information

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IPC IPC(8): C10C3/00
CPCC10C3/005
Inventor 张胜振陈闯刘均庆盛英宫晓颐郑冬芳卓锦德
Owner CHNA ENERGY INVESTMENT CORP LTD
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