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Method for evaluating consistency between direct coal liquefaction residues and petroleum asphalt

A technology of direct coal liquefaction and petroleum asphalt, applied in the field of construction, can solve the problems of no suitable compatibility evaluation method, etc., and achieve the effects of easy operation, low energy consumption, and environmental protection

Inactive Publication Date: 2017-10-24
BEIJING UNIV OF CIVIL ENG & ARCHITECTURE +1
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  • Abstract
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Problems solved by technology

[0014] It can be seen from the above that in terms of the compatibility of modifiers and petroleum asphalt, the modification effect of SBS modified asphalt or rubber powder modified asphalt is mainly used to evaluate the compatibility of SBS or rubber powder with petroleum asphalt. , a reasonable and direct method for evaluating the compatibility of DCLR and petroleum asphalt

Method used

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  • Method for evaluating consistency between direct coal liquefaction residues and petroleum asphalt
  • Method for evaluating consistency between direct coal liquefaction residues and petroleum asphalt
  • Method for evaluating consistency between direct coal liquefaction residues and petroleum asphalt

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Effect test

Embodiment 1

[0048] Petroleum asphalt adopts No. 70 petroleum asphalt (ZSY-70) produced by China National Petroleum Corporation and No. 90 petroleum asphalt (SK-90) produced by South Korea. DCLR comes from Inner Mongolia Shenhua Group.

[0049] 1) Test the performance of DCLR, ZSY-70 and SK-90.

[0050] The properties of DCLR, ZSY-70 and SK-90 are shown in Table 1-3 respectively.

[0051] Table 1 Performance of DCLR

[0052]

[0053] Table 2 Properties of ZSY-70 asphalt

[0054]

[0055]

[0056] Table 3 Properties of SK-90 asphalt

[0057]

[0058] The technical indicators of ZSY-70 and SK-90 petroleum asphalt meet the technical standards for road petroleum asphalt in "Technical Specifications for Construction of Highway Asphalt Pavement" (JTGF40-2004).

[0059] 2) The blends of DCLR, ZSY-70 and SK-90 were prepared respectively.

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Abstract

The invention relates to a method for evaluating the consistency between direct coal liquefaction residues and petroleum asphalt. The method comprises the following steps: (1) adding a certain dosage of DCLR into the petroleum asphalt, so as to prepare a blend of the DCLR and the petroleum asphalt;(2) carrying out dynamic shearing rheological test on the blend of the DCLR and the petroleum asphalt by virtue of a dynamic shearing rheometer DSR; (3) calculating a real part n' and a virtual part n'' of complex viscosity according to a DSR test result, and drawing a Cole-Cole graph (a n'-n'' relation graph); (4) calculating change ratios of longitudinal and transverse short axis ratios according to the Cole-Cole graph; and (5) evaluating the consistency between the DCLR and the petroleum asphalt according to the change ratios of longitudinal and transverse short axis ratios in the Cole-Cole graph of the blend of the DCLR and the petroleum asphalt. The method disclosed by the invention is an economic and practical method, is simple, easy in operation, low in energy consumption and cost and beneficial to environmental protection.

Description

technical field [0001] The invention belongs to the technical field of construction and relates to a method for evaluating the compatibility of coal direct liquefaction residue and petroleum asphalt. Background technique [0002] DCLR (Direct Coal Liquefaction Residue) is a by-product produced in the direct coal liquefaction process, which accounts for about 30% of the total raw coal. It is a substance with high ash, high sulfur, high carbon and high calorific value. Composed of 4 components including asphaltene, pre-asphaltenes, heavy oil and THF insoluble matter, of which heavy oil and asphaltenes account for 30-50% [0003] Since the 1970s, people have started to study the influence of DCLR as a modifier on the performance of asphalt. [0004] Wang Zhaixia mixed different types of DCLR in different proportions, and found that with the increase of the amount of DCLR modifier, the softening point of the modified asphalt gradually increased, and the penetration and ductilit...

Claims

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Application Information

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IPC IPC(8): G01N33/42C08K11/00
CPCG01N33/42C08K11/005C08L95/00
Inventor 季节武昊索智于海臣许鹰徐世法姜鉴恒
Owner BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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