The water associated with coal is an important element in both the formation and utilization
of coal deposit. The first stage of coal formation is the accumulation of vagetable matter in swamps.
This is followed by consolidation and partial decay of the organic matter to form peat, which can have
moisture contents of 80-90% in situ. Low-rank coals such as brown coals and lignite, which are
formed in the next stage of coalification, can have moisture contents in range 30-70%. Hard or
bituminous coals, which are formed in the final stages of coalification, have relatively low moisture
contents of 10% or less. Thus the elimination of water is an integral part of the coalification process
and it follows that the moisture content of coal is one of its most characteristic and important
properties. Moisture is one of the most basic and important parameter defining coal structure but the
data reported on its effect on combustion efficiency and emissions is rather limited. In this study we
report effect of coal moisture on CO, NOx, SO2 and particulate emissions in a automatic-loaded
boiler combustion. In this study, effects of moisture on particulate emissions of %37-38 moisture
orijinal Yeniköy Ağaçlı (Y.A.), %24, %21, %17, %15 ve %10 moisture Yeniköy Ağaçlı, %6 moisture
South African coal, %22 misture mixture coal (S.African ve Y.Ağaçlı) ve %13 moisture Soma are
investigated in automatic-loaded boiler.