Physico-chemical structure and combustion properties of chars derived from co-pyrolysis of lignite with direct coal liquefaction residue

Fuel ◽  
2017 ◽  
Vol 187 ◽  
pp. 103-110 ◽  
Author(s):  
Junli Xu ◽  
Zongqing Bai ◽  
Jin Bai ◽  
Lingxue Kong ◽  
Dongmei Lv ◽  
...  
Keyword(s):  
Chemical Structure ◽  
Coal Liquefaction ◽  
Physico Chemical ◽  
Combustion Properties ◽  
Direct Coal Liquefaction ◽  
Coal Liquefaction Residue

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.

Room-temperature extraction of direct coal liquefaction residue by liquefied dimethyl ether

Fuel ◽  
2020 ◽  
Vol 262 ◽  
pp. 116528 ◽  
Author(s):  
Qingxin Zheng ◽  
Yelin Zhang ◽  
Wahyudiono ◽  
Thierry Fouquet ◽  
Xi Zeng ◽  
...  
Keyword(s):  
Dimethyl Ether ◽  
Room Temperature ◽  
Coal Liquefaction ◽  
Direct Coal Liquefaction ◽  
Coal Liquefaction Residue
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