Product Characteristics and Interaction Mechanism in Low-Rank Coal and Coking Coal Co-Pyrolysis Process

2020 ◽  
Vol 53 (4) ◽  
pp. 167-176
Author(s):  
Ting Su ◽  
Yonghui Song ◽  
Xinzhe Lan
Keyword(s):  
Interaction Mechanism ◽  
Low Rank ◽  
Pyrolysis Process ◽  
Low Rank Coal ◽  
Product Characteristics ◽  
Coking Coal

Study on the Process Analysis and Kinetics during the Co-Pyrolysis of Low Rank Coal and Enteromorpha

2014 ◽  
Vol 1008-1009 ◽  
pp. 268-273
Author(s):  
Chun Xia Wang ◽  
Xuan Ming He ◽  
Dong Zheng Feng ◽  
Fu Lu Ao
Keyword(s):  
Synergistic Effect ◽  
Reaction Rate ◽  
Compensation Effect ◽  
Process Analysis ◽  
Low Rank ◽  
Pyrolysis Process ◽  
Low Rank Coal ◽  
Kinetics Analysis ◽  
Exponential Factor ◽  
Maximum Value

The pyrolysis of low rank coal (LRC) , enteromorpha (EN) and their mixture were carried out in a special prolysis equipment. The experiments showed that the maximum tar yield of blends was 11.39% with a EN ration of 30%, which increased by 28.61% compared to LRC pyrolysis alone and 8.87% compared to calculated value. The thermogravimetric analysis (TGA) of LRC, EN and their mixture indicated that there was significant synergistic effect in the co-pyrolysis process of LRC and EN during 240~750°C. The relative maximum value of synergistic effect was 18.5%. Kinetics analysis showed there was compensation effect between activation energy and pre-exponential factor of co-pyrolysis. The mix of LRC and EN enhanced the reaction activity and lowers the reaction rate. Synergistic effect mainly was reflected in enhancing the reaction activity of co-pyrolysis.

Study on the structural evolution of semi-chars and their solvent extracted materials during pyrolysis process of a Chinese low-rank coal

Fuel ◽  
2018 ◽  
Vol 214 ◽  
pp. 363-368 ◽  
Author(s):  
Liangping Zhang ◽  
Song Hu ◽  
Kai Xu ◽  
Long Jiang ◽  
Yi Wang ◽  
...  
Keyword(s):  
Structural Evolution ◽  
Low Rank ◽  
Pyrolysis Process ◽  
Low Rank Coal

Mg-modified ultra-stable Y type zeolite for the rapid catalytic co-pyrolysis of low-rank coal and biomass

RSC Advances ◽  
2016 ◽  
Vol 6 (3) ◽  
pp. 2096-2105 ◽  
Author(s):  
J. Rizkiana ◽  
G. Guan ◽  
W. B. Widayatno ◽  
J. Yang ◽  
X. Hao ◽  
...  
Keyword(s):  
Low Rank ◽  
Pyrolysis Process ◽  
Low Rank Coal ◽  
Type Zeolite

To improve the quality of oil derived from the fast co-pyrolysis of low-rank coal with biomass, various metal-modified ultra-stable Y type (USY) zeolites are mixed with the samples for the co-pyrolysis process.

INVESTIGATING A LINK BETWEEN LOW-RANK COAL BEARING CARRIZO-WILCOX AQUIFER WATER AND KIDNEY DISEASE IN EAST TEXAS

2018 ◽  
Author(s):  
Jayeeta Chakraborty ◽  
◽  
Robert B. Finkelman ◽  
William H. Orem ◽  
Matthew S. Varonka ◽  
...  
Keyword(s):  
Kidney Disease ◽  
Low Rank ◽  
East Texas ◽  
Low Rank Coal

scholarly journals Surface Chemical Heterogeneity of Low Rank Coal Characterized by Micro-FTIR and Its Correlation with Hydrophobicity

Minerals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 239
Author(s):  
Wei Wang ◽  
Long Liang ◽  
Yaoli Peng ◽  
Maria Holuszko
Keyword(s):  
Surface Chemistry ◽  
Functional Group ◽  
Group Composition ◽  
Contact Angles ◽  
Low Rank ◽  
Surface Chemical ◽  
Carbonyl Groups ◽  
Low Rank Coal ◽  
Different Types ◽  
Aliphatic Carbon

Micro-Fourier transform infrared (micro-FTIR) spectroscopy was used to correlate the surface chemistry of low rank coal with hydrophobicity. Six square areas without mineral impurities on low rank coal surfaces were selected as testing areas. A specially-designed methodology was applied to conduct micro-FTIR measurements and contact angle tests on the same testing area. A series of semi-quantitative functional group ratios derived from micro-FTIR spectra were correlated with contact angles, and the determination coefficients of linear regression were calculated and compared in order to identify the structure of the functional group ratios. Finally, two semi-quantitative ratios composed of aliphatic carbon hydrogen, aromatic carbon hydrogen and two different types of carbonyl groups were proposed as indicators of low rank coal hydrophobicity. This work provided a rapid way to predict low rank coal hydrophobicity through its functional group composition and helped us understand the hydrophobicity heterogeneity of low rank coal from the perspective of its surface chemistry.

Transformation of low-rank coal to clean syngas and power via thermochemical route

Energy ◽  
2021 ◽  
pp. 121505
Author(s):  
Muflih A. Adnan ◽  
Arif Hidayat ◽  
Mohammad M. Hossain ◽  
Oki Muraza
Keyword(s):  
Low Rank ◽  
Low Rank Coal
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