A review of kinetic studies on evaporative dehydration of lignite

R Han, A Zhou, N Zhang, Z Li - Fuel, 2022 - Elsevier
Dehydration is a necessary link for lignite upgrading, and evaporative dehydration is one of
the most effective dehydration technologies for lignite. Kinetics, as a fundamental …

Measurement of uniaxial compression mechanical properties of thermally dried coal samples by energy and fragmentation characteristic analyses

C Zheng, Q Yao, C Shan, Y Li, X Shang, X Li, J Li - Measurement, 2023 - Elsevier
This study aimed to determine the effects of different drying temperatures on the mechanical
properties of coal samples under axial compression. Processed, screened, and water …

Physicochemical properties and slurry ability changes of lignite after microwave upgrade with the assist of lignite semi-coke

Y Ren, Z Xu, S Gu - Energy, 2022 - Elsevier
Microwave pyrolysis is a promising technique for the clean and effective utilization of low-
rank coal, which has aroused widespread concern during the past decades. This paper …

Experimental study on the effect of high-temperature nitrogen immersion on the nanoscale pore structure of different lithotypes of coal

H Zhang, J Shen, G Wang, K Li, X Fang - Energy, 2023 - Elsevier
This paper presents the heat treatment study on different lithotypes of coal using a custom
designed high-temperature thermal nitrogen immersion experimental setup. The results …

Experimental study on the effect of high-voltage electrical pulses on the nanoscale pore structure of coal

Z Ni, B Lin, X Zhang, X Cao, L Zhong, Y Gao - Fuel, 2021 - Elsevier
Research on electric pulse fracturing technology has led to significant advances in the field
of coal mine fracturing and permeability enhancement. However, few studies have focused …

Hot-air drying shrinkage process of lignite and its cracking mechanism

M Gao, K Wan, Z Miao, Q He, S Xue, X Dong - Fuel, 2022 - Elsevier
Lignite fragmentation during drying can significantly impair the operation of a drying system.
Volume shrinkage is the main factor that causes lignite fragmentation during low …

Microwave fracturing of frozen coal with different water content: Pore-structure evolution and temperature characteristics

Z Yang, C Wang, Y Zhao, J Bi - Energy, 2024 - Elsevier
Liquid nitrogen (LN 2) freezing has widely been studied for the production of coal-bed
methane (CBM) in coal reservoirs, but there is little study involving the thawing process. In …

Structural changes mechanism of lignite during drying: Correlation between macroscopic and microscopic

C Cheng, M Gao, Z Miao, K Wan, Q He - Fuel, 2023 - Elsevier
The structure of lignite is affected by fragmentation and pulverization during drying, which
can reduce the safety and continuity of both drying and coal quality improvement processes …

Revelation of non-thermal effects on microwave drying of lignite: Reactor design and drying characteristics

L Wu, Y Guan, BR Reddy, C Li, RK Liew, J Zhou - Fuel, 2025 - Elsevier
Microwave non-thermal effects are controversial and its effects on lignite microwave drying
remain blank. The lignite drying characteristics in shielded microwave drying (SMD) and …

Experimental Investigation on the Effects of Microwave Irradiation in Pore Structures of LN2 Freezing Coal for Coalbed Methane Extraction

Y Zhao, Z Yang, C Wang, J Bi - Rock Mechanics and Rock Engineering, 2024 - Springer
Abstract Liquid nitrogen (LN 2) fracturing, an effective method in stimulating reservoirs,
contains freezing and thawing. In general, frozen rocks are air-thawed in past studies …