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π SIMILAR VOLUMES
As a part of investigations on the influence of humidity on the initial stage of the spontaneous heating of coal, the effect of desorption of moisture from the coal was studied. Laboratory experiments with different coals were carried out under conditions where desorption of water from the coals by
07 Solid fuels (economics, business, marketing, policy) sulfur was removed from the subbituminous coal using this method. Sulfur in coal was derived mainly from: (1) parent plant material and (2) sulfate in seawater that overlaid peat swamps.
Laboratory experiments have been carried out to measure the rates of heat release from different coals by a calorimeter during sorption of water vapour in isothermal conditions. It has been observed that the rate of heat generation in a particular coal increases with the equilibrium humidity deficie
Summarizing, the current results show that similar combustion efficiencies are obtained, generally, for pellets and whole coals of equal carbon content. The anomalously high carbon loss of friable coal is markedly reduced by pelletizing, but this procedure has no apparent effect on the high carbon l