Research on performance of direct coal liquefaction residue modified asphalt mortar

2021 ◽  
Vol 49 (8) ◽  
pp. 1095-1101
Author(s):  
Jie JI ◽  
Xin-qiang XU ◽  
Ying XU ◽  
Zhe WANG ◽  
Jia-ni WANG
Keyword(s):  
Coal Liquefaction ◽  
Modified Asphalt ◽  
Direct Coal Liquefaction ◽  
Coal Liquefaction Residue ◽  
Asphalt Mortar

scholarly journals Properties of Direct Coal Liquefaction Residue Modified Asphalt Mixture

2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
Jie Ji ◽  
Hui Yao ◽  
Di Wang ◽  
Zhi Suo ◽  
Luhou Liu ◽  
...  
Keyword(s):  
Asphalt Binder ◽  
Asphalt Mixture ◽  
Asphalt Mixtures ◽  
Coal Liquefaction ◽  
Asphalt Binders ◽  
Modified Asphalt ◽  
Viscoelastic Parameters ◽  
Direct Coal Liquefaction ◽  
Coal Liquefaction Residue ◽  
Sbs Modified Asphalt

The objectives of this paper are to use Direct Coal Liquefaction Residue (DLCR) to modify the asphalt binders and mixtures and to evaluate the performance of modified asphalt mixtures. The dynamic modulus and phase angle of DCLR and DCLR-composite modified asphalt mixture were analyzed, and the viscoelastic properties of these modified asphalt mixtures were compared to the base asphalt binder SK-90 and Styrene-Butadiene-Styrene (SBS) modified asphalt mixtures. The master curves of the asphalt mixtures were shown, and dynamic and viscoelastic behaviors of asphalt mixtures were described using the Christensen-Anderson-Marasteanu (CAM) model. The test results show that the dynamic moduli of DCLR and DCLR-composite asphalt mixtures are higher than those of the SK-90 and SBS modified asphalt mixtures. Based on the viscoelastic parameters of CAM models of the asphalt mixtures, the high- and low-temperature performance of DLCR and DCLR-composite modified asphalt mixtures are obviously better than the SK-90 and SBS modified asphalt mixtures. In addition, the DCLR and DCLR-composite modified asphalt mixtures are more insensitive to the frequency compared to SK-90 and SBS modified asphalt mixtures.

Study on Properties of the Blends with Direct Coal Liquefaction Residue and Asphalt

2014 ◽  
Vol 488-489 ◽  
pp. 316-321 ◽  
Author(s):  
Jie Ji ◽  
Yong Shang Zhao ◽  
Shi Fa Xu
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Processing Method ◽  
Coal Liquefaction ◽  
Direct Influence ◽  
Processing Methods ◽  
High Temperature Properties ◽  
Additive Content ◽  
Direct Coal Liquefaction ◽  
Coal Liquefaction Residue

This paper studies the properties of the blends composed of DCLR (direct coal liquefaction residue) and asphalt using two different processing methods, compares the regulation that the DCLR additive content and processing method take influence on the high-temperature properties, low-temperature properties and durability of the blends. It is found that the DCLR can improve the high-temperature properties of asphalt but degrade its low-temperature properties. The properties of blends composed of DCLR, asphalt and furfural extract oil are tested and analyzed by adding a certain amount of furfural extract oil into it, which shows that adding DCLR can improve the high-temperature properties of asphalt and reduce its low-temperature properties but can hardly cause any impact on the properties of the blends. In addition, the processing method has a direct influence on the properties of blends.

scholarly journals Recycling Molybdenum from Direct Coal Liquefaction Residue: A New Approach to Enhance Recycling Efficiency

Catalysts ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 306
Author(s):  
Chunling Wu ◽  
Yang Luo ◽  
Kai Zhao ◽  
Xiaobing Yu ◽  
Xian Zhang ◽  
...  
Keyword(s):  
Coal Liquefaction ◽  
X Ray Diffraction ◽  
New Approach ◽  
Sublimation Temperature ◽  
Thermal Analyzer ◽  
Ft Ir ◽  
Set Up ◽  
Direct Coal Liquefaction ◽  
Coal Liquefaction Residue ◽  
Optimum Extraction

In this paper, direct coal liquefaction residue was prepared from Shen-dong coal, and the solubility of the residue in five organic solvents was studied. Then, an experimental device was set up to recover molybdenum (Mo) compounds from the direct coal liquefaction residue after extraction, and the influences of sublimation temperature and duration on recycling efficiency were examined. The recycled Mo-based products were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), and a thermal analyzer. The results reveal that the optimum extraction conditions were obtained through ultrasonic extraction with a quinoline solvent and the highest recycling efficiency occurred for sublimation at 900 °C for 30 min. The recycled products are identified to be α-MoO3 crystals. Moreover, the α-MoO3 crystal is thermally stable before the temperature reaches its melting point.

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