Purpose. To develop scientific foundations and technical solutions to implement the converting of anthracite boiler 800 MW unit Slovianska TPP with central coal pulverizing plant sub-bituminous combustion maximum use existing equipment, without stopping unit’s operation. Methodology. Theoretical calculational studies on processes drying at plant. Calculational justification eliminate risk pulve...

Researchers have thoroughly studied coal pyrolysis over a long period, while the analysis of volatile evolution and chemical structural changes solid char were carried out individually in most studies. In this work, we quantified reactions to explain different physical phenomena, such as softening caking properties, exhibited by ranks coals during pyrolysis. Four typical carbonaceous feedstocks...

Hybrid direct carbon/coal fuel cells (HDCFCs) utilise an anode based upon a molten carbonate salt with an oxide conducting solid electrolyte for direct carbon/coal conversion. They can be fuelled by a wide range of carbon sources, and offer higher potential chemical to electrical energy conversion efficiency and have the potential to decrease CO2 emissions compared to coal-fired power plants. I...

Coal will continue to be the most demanded energy source worldwide, which highlights the importance of better understanding current practices and environmental impacts of this industry. Indonesia is the largest coal exporter in the world, but studies evaluating the environmental impacts of the coal industry in this country are missing in the literature. A case study of the Indonesian coal suppl...

Mercury (Hg) is a toxic trace element emitted from coal conversion and utilization. Samples with different ranks gangue Ningwu Coalfield are selected investigated in this study. For understanding dependence of mercury distribution characteristics on coalification degree, Pearson regression analysis coupled Spearman rank correlation employed to explore the relationship between sulfur, ash coal, ...

This paper addresses the experimental investigation of coal combustion characteristics (ignition, burnout and NO formation) under oxy-steam conditions. Two coals are selected in order to compare effect rank: bituminous sub-bituminous ones. The experiments have been conducted an electrically-heated entrained flow reactor for a set O2/N2, O2/CO2 O2/H2O/CO2 atmospheres, with O2 concentrations up 3...

The adsorptive capacity of powdered activated carbon (PAC) is related to the size of the target adsorbate compared with the quantity of pores with sufficient pore diameter into which the adsorbate may diffuse (i.e., the effective internal surface area). The adsorptive capacity of PACs are commonly characterized using aqueous-phase indices such as iodine (I2), methylene blue (MB), p-nitrophenol ...

Information on radiographic evidence of coal workers' pneumoconiosis (CWP) is presented for a group of 3,194 underground bituminous coal miners and ex-miners examined between 1985 and 1988. Prevalence of CWP was related to estimated cumulative dust exposure, age, and rank of coal. On the basis of these data, miners of medium to low rank coal, who work for 40 years at the current federal dust li...