Journal ArticleDOI
Microwave-assisted rapid upgrading of Indian high ash coal and its blending with untreated coal to improve the slurryability and rheological characteristics of blended slurry
TLDR
In this paper, the Indian high ash coal collected from Makum coal fields of Assam is crushed, sieved and air dried using lab scale instruments, and the coal sample is treated in a la...Abstract:
The Indian high ash coal collected from Makum coal fields of Assam is crushed, sieved and air dried using lab scale instruments. Based on the preliminary results, the coal sample is treated in a la...read more
Citations
More filters
Journal ArticleDOI
A machine learning approach to improve ignition properties of high-ash Indian coals by solvent extraction and coal blending
TL;DR: In this article, the authors explore two methods of improving ignition characteristics of Indian coals: solvent extraction and coal blending, and find that solvent extraction of the coal reduced the activation energy by approximately 50%.
Journal ArticleDOI
Research on the slurrying performance of coal and alkali-modified sludge
Ruizhi Chu,Ruizhi Chu,Yulong Li,Xianliang Meng,Xianliang Meng,Lulu Fan,Guoguang Wu,Guoguang Wu,Xiao Li,Xiaofeng Jiang,Shi Yu,Yuanfeng Hu +11 more
TL;DR: In this paper, the authors investigated the mechanism of modified sludge coal water slurry (MSCWS), where oxygen-containing functional groups formed polar bonds with water, which restricted the slurrying performance and reduced the adsorption of additive on the coal surface.
Journal ArticleDOI
Experimental investigation on effects of solid concentration, chemical additives, and shear rate on the rheological properties of bottom ash (BA) slurry
TL;DR: In this paper, an experimental analysis is done for understanding the effect of various parameters like shear rate, solid concentration, and particle size on rheological behavior of bottom ash slurry.
Journal ArticleDOI
Modeling of solid-liquid flow inside conical diverging sections using computational fluid dynamics approach
TL;DR: In this paper, the authors used the computational fluid dynamics approach to simulate coal water slurry through conical diverging sections and found the 0.3-m long diverging section to be the optimum design for best pressure recovery, maximum volumetric efficiency and lowest head-loss.
Journal ArticleDOI
Computational study on effect of Mahua natural surfactant on the flow properties of heavy crude oil in a 90° bend
Praveen Kumar,Jashanpreet Singh +1 more
TL;DR: In this paper, the influence of natural surfactant in a 90° bend on the flow properties of heavy Crude Oil is investigated using ANSYS Fluent, computational fluid dynamics (CFD) code is used to investigate the flow phenomena in horizontal pipe bends.
References
More filters
Journal ArticleDOI
Low-Rank Coal Drying Technologies—Current Status and New Developments
TL;DR: In this article, the relative merits and limitations of various drying technologies and the current state of their development are presented, and an overview of the diverse processes used for low-rank coal drying is provided.
Journal ArticleDOI
Effect of hydrothermal dewatering on the slurryability of brown coals
TL;DR: In this article, two brown coals from China were dewatered under hydrothermal dewatering (HTD) conditions at 250-320°C for 1h in a 2L autoclave.
Journal ArticleDOI
The effect of microwave pre-heating on five different coals
Edward Lester,Sam Kingman +1 more
TL;DR: In this paper, the effect of microwave pre-treatment on the chemical and petrography properties of coal was investigated using a thermogravimetric analyser, and the results showed that the coal fundamental properties change as a result of exposure to relatively high levels of microwave energy.
Journal ArticleDOI
Upgrading of low rank coal by hydrothermal treatment: Coal tar yield during pyrolysis
TL;DR: In this article, the free radical concentrations in coal were determined by electron paramagnetic resonance spectrometer and thermal analysis of the raw and treated coal was compared by thermogravimetric analyzer.
Journal ArticleDOI
Influence of the hydrothermal dewatering on the combustion characteristics of Chinese low-rank coals
TL;DR: In this article, the authors investigated the influence of dewatering performed at different temperatures on the combustion characteristics of Chinese low-rank coals with different coalification maturities and found that the upgrading process significantly decreased the inherent moisture and oxygen content, increased the calorific value and fixed carbon content, and promoted the damage of the hydrophilic oxygen functional groups.