Co-firing ramie residue with coal was carried out in a thermogravimetric analyzer and a cyclone furnace to evaluate the effects of coal fraction (0 to 30 wt. %) on combustion performance. Thermogravimetric analysis (TGA) results showed that devolatilisation was the predominant process when the coal percentage in the blend was below 30 wt. %. For pure biomass firing in the cyclone furnace, an op...

X-ray photoelectron spectroscopy was used to investigate the characteristics and evolution of sulfur (S) in mixtures of bituminous coal and sewage sludge (SS) and their chars during isothermal combustion. Five groups of mixtures with SS content of 0%, 10%, 20%, 30% and 100%, were examined at different burn-off ratios (beta) of 0, 30%, 50%, 70% and 100%. The S in the coal mainly exist as the for...

This paper reports a modelling work on the existing experimental data of single coal particles combustion process [1,2]. Two kinds of coal particles (a high-volatile bituminous coal / a lignite coal) are injected in a drop-tube furnace, ignited and burned in quiescent O2/N2 and O2/CO2 atmospheres with oxygen mole fraction varying from 20% to 100%. Ignition delay time, particle life time and par...

In relation to future energy demand and fossil fuel crisis particularly in India, biomass is gaining its importance for possible utilization as co-fuel. This study focuses the use of „low temperature biomass char‟ instead of raw biomass in the blends to extract some specific advantages like lowering of grinding energy, intensification of heat energy, proper adjustment of „VM and fuel ratio‟ etc...

Coal combustion is the primary anthropogenic source of atmospheric iodine, which has important environmental and health effects. The iodine distribution in Chinese coals and the atmospheric iodine emission factors of coal-fired boilers are studied to estimate the iodine atmospheric flux from coal combustion in China from 1995 to 2009. The national average iodine content weighted by coal yield f...

Currently, despite the development of alternative technologies, main source energy is fossil fuels. A significant proportion fuels solid fuels, which, along with undoubted advantages, have a high fire hazard, including related to their ability spontaneous combustion. The process combustion has not been sufficiently studied, and methods combating it are still far from perfect. Self-ignition long...

Based on coal spontaneous combustion characteristics under different influence differ greatly. The oxidation mechanism of is reviewed. surface active functional groups which the were studied. factors affecting analyzed, including volatile matter, ash, moisture content and metal elements. It provides reference guidance for further study characteristics.