A machine learning approach to improve ignition properties of high-ash Indian coals by solvent extraction and coal blending

S Mittal, S Pathak, H Dhawan… - Chemical Engineering …, 2021 - Elsevier
Indian coals are of poor quality, having high ash content and lower calorific value as
compared to foreign coal reserves. To circumvent the problems of high ash content and low …

Co–solvent effects on hydrothermal co–gasification of coal/biomass mixtures for hydrogen production

A Hasanoğlu, E Faki, A Seçer, ŞT Üzden - Fuel, 2023 - Elsevier
The use of low–rank coals for hydrogen production by gasification can create advantageous
options to overcome a potential energy crisis. In this study, the effects of 8 different solvents …

Co-pyrolysis behaviors of coal and polyethylene by combining in-situ Py-TOF-MS and reactive molecular dynamics

W Feng, M Zheng, L Jin, J Bai, L Kong, H Li, Z Bai, W Li - Fuel, 2023 - Elsevier
Co-pyrolysis of waste plastics and low-rank coal is a promising approach to deal with the
serious waste crisis and improve the clean utilization of low-rank coal. In this work, the …

Identification of the transformation features of heteroatomic compounds in a low rank coal by combining thermal extraction and various analytical approaches

J Yin, X Lin, C Wang, J Dai, Y Wang, Z Xu - Fuel, 2020 - Elsevier
Solvent extraction is an effective approach to analyze the molecular features of coal and to
reveal the transformation mechanism of heteroatoms. In order to accurately figure out the …

Effect of extracts of petroleum ether, dichloromethane and methanol on thiophenic sulfur release during coal pyrolysis

W Zhang, Y Cheng, J Kong, L Yan, M Wang… - Journal of Analytical and …, 2023 - Elsevier
The existing forms and thermal transformation of sulfur in high sulfur coal directly influence
the efficiency of coal clean utilization by the staged pyrolysis conversion. Low molecular …

Py-GCMS studies of Indian coals and their solvent extracted products

DK Sharma, H Dhawan, T Morgan, M Crocker - Fuel, 2019 - Elsevier
Five Indian coals having different characteristics, ie, coking, rank, grade, and carbon and
volatile matter (VM) content, were subjected to solvent extraction under mild, ambient …

Solvent extraction of superfine pulverized coal. Part 1. Composition of the extract

J Liu, Y Jiang, X Jiang, H Zhang, X Jiang - Energy & Fuels, 2020 - ACS Publications
The chemical properties of coal extracts play a crucial role in understanding coal structure,
constructing coal model, and developing clean coal technology. However, there is little …

Solvent extraction of superfine pulverized coal. Part 2. Free-radical characteristics

J Liu, X Zhong, X Jiang, X Jiang - Energy & Fuels, 2021 - ACS Publications
To better explore coal macromolecular models from the extraction aspects, the behaviors of
free radicals during the solvent extraction of superfine pulverized coal were studied. The …

Cationically functionalized amylopectin as an efficient flocculant for treatment of coal suspension

AS Patra, P Patra, S Chowdhury, AK Mukherjee… - Colloids and Surfaces A …, 2020 - Elsevier
The present work deals with the development of a novel biopolymeric flocculant towards the
treatment of coal suspension. Amylopectin has been chosen as natural polysaccharide to be …

Solvent extraction of superfine pulverized coal. Part 3. Small angle X-ray scattering characterization

Z Zhou, J Liu, G Chen, X Yang, X Zhong, J Liu, X Jiang - Fuel, 2023 - Elsevier
Because of the unique physicochemical textures induced by reduced particle size, superfine
pulverized coal presents attractive characteristics in different utilization processes, including …