SYNOPSIS Spontaneous combustion (SC) is a cold oxidation reaction that generates heat, causing temperature rise of the reactant and leading, with limited heat dissipation, to self-ignition reactant, which occurs without an external source. Although not coal, most significant hazard SC are fires occur in coal mining operations around world. These pose serious risk safety workers mines as well ad...

Spontaneous combustion of coal remains an important problem for mines, which can lead to explosion methane and dust. Accidents associated with spontaneous cause significant economic losses mining companies, as well entail social damage – injuries loss life. are known at the Kuzbass occurred a result negligent attitude danger coal, victims were dozens people. The analysis emergency situations sh...

Coal blending is becoming increasingly common as more and more off-specification coals are received in coal-fired power plants, given the present coal market in China. This situation requires optimization of the operating parameters for matching the varying coal properties. The motivation for such optimization includes confirming good performance of the units regarding the security, the economy...

Pollution Sources Thomas Grahame U. S. Department of Energy Washington, DC George Hidy Envair/Aerochem Placitas, NM ABSTRACT Laden et al. (2000) recently reported results of applying factor analysis to data taken in six cities from1979 to1988, identifying airborne particle sources potentially affecting daily mortality. These authors sought relationships between source groups and risk measures u...

Laden et al. (2000) recently reported results of applying factor analysis to data taken in six cities from 1979 to 1988, identifying airborne particle sources potentially affecting daily mortality. These authors sought relationships between source groups and risk measures using source tracer elements, Se (coal combustion), Pb (light-duty motor vehicle sources), and Si (crustal--soil dispersion)...

Organic aerosol (OA) constitutes a substantial fraction of fine particles and affects both human health and climate. It is becoming clear that OA absorbs light substantially (hence termed Brown Carbon, BrC), adding uncertainties to global aerosol radiative forcing estimations. The few current radiative-transfer and chemical-transport models that include BrC primarily consider sources from bioge...

Abstract Coal spontaneous combustion (CSC) is a disaster associated with coal mining that leads to loss of resources and environmental human health issues. To investigate kinetic characteristics for oxidation coal, three samples were collected from different areas in the Southern Junggar coalfield. Subsequently, ground into particle sizes tested using microscopic macroscopic methods, including ...