Lime Spray Drying
LSD for the control of SO2 emissions is used
for sources that burn low- to medium-sulfur
coal, with occasional applications for coals
with higher sulfur content. Some issues that
limit the use of spray dryers with high-sulfur
coals include the potential impact of chloride
contained in the coal on the spray dryer
performance, and the ability of the existing
particulate control device to handle the
increased loading and achieve the required
efficiency.