Progress of Raman spectroscopic investigations on the structure and properties of coal

Y Xu, X Chen, L Wang, K Bei, J Wang… - Journal of Raman …, 2020 - Wiley Online Library
Raman spectroscopy is a nondestructive and in situ analytical technique that could provide
information on the chemical structure and structural ordering of carbonaceous materials …

Investigation on the physicochemical structure and gasification reactivity of nascent pyrolysis and gasification char prepared in the entrained flow reactor

H Zhao, Y Li, Q Song, S Liu, J Yan, X Wang, Q Ma… - Fuel, 2019 - Elsevier
The structure of nascent pyrolysis and gasification char during lignite pyrolysis and
gasification changes due to the product branching which holds the key to unveil these …

Evolution of carbon structure and functional group during Shenmu lump coal pyrolysis

D Meng, C Yue, T Wang, X Chen - Fuel, 2021 - Elsevier
An in-depth study on the chemical structure evolution during the pyrolysis of lump coal is of
great significance for revealing the pyrolysis mechanism in fixed-bed gasifier. In this paper …

Effects of steam and CO2 on the characteristics of chars during devolatilization in oxy-steam combustion process

J Xu, S Su, Z Sun, M Qing, Z Xiong, Y Wang, L Jiang… - Applied Energy, 2016 - Elsevier
Oxy-steam combustion is considered as one of promising technologies for the next
generation oxy-fuel combustion, in which coal mainly burns in O 2/H 2 O atmosphere. This …

Experimental study on the effect of temperature and oxygen on pyrolysis-gasification decoupling characteristics of Yili coal

H Zhang, Z Shen, Z Dong, Y Yang, J Xu, Q Liang… - Journal of Analytical and …, 2023 - Elsevier
Pyrolysis, as the initial process of coal clean utilization, is essential to ensure the operation
of pyrolysis-gasification decoupling technology. This paper aims to investigate the effects of …

Structural transformations and hydrocarbon generation of low-rank coal (vitrinite) during slow heating pyrolysis

Y Song, B Jiang, JP Mathews, G Yan, F Li - Fuel Processing Technology, 2017 - Elsevier
To explore the liquefaction behaviors of low-rank coal vitrinite, the transformations
accompanying vitrinite pyrolysis were examined at 10° C per hour between 350 and 520° C …

Changes in char structure during the low-temperature pyrolysis in N2 and subsequent gasification in air of Loy Yang brown coal char

T Li, L Zhang, L Dong, P Qiu, S Wang, S Jiang, CZ Li - Fuel, 2018 - Elsevier
This study aims to investigate the changes in char structure during the pyrolysis in N 2 and
subsequent gasification in air at low temperature in a thermogravimetric analyser. The chars …

Evolution of structural and surface chemistry during pyrolysis of Zhundong coal in an entrained-flow bed reactor

D Liang, Q Xie, C Wan, G Li, J Cao - Journal of Analytical and Applied …, 2019 - Elsevier
In this study, a typical Zhundong coal sample was examined, and a series of step-wise
pyrolysis experiments, where the temperature was gradually elevated in small increments …

Effects of gasification temperature and atmosphere on char structural evolution and AAEM retention during the gasification of Loy Yang brown coal

T Li, L Zhang, L Dong, S Zhang, P Qiu, S Wang… - Fuel Processing …, 2017 - Elsevier
This study aims to investigate the influence of gasification temperature on the evolution of
char structure and the retention of alkali and alkaline earth metallic (AAEM) species for a …

Study on rapid pyrolysis and in-situ char gasification characteristics of coal and petroleum coke

L Ding, J Wei, Z Dai, Q Guo, G Yu - International Journal of Hydrogen …, 2016 - Elsevier
Rapid pyrolysis characteristics of three different rank coals and two petroleum cokes were
investigated using a drop tube furnace. Moreover, gasification characteristics of char …