Emission of Harmful Substances from the Coal and Waste Water Sludge Co-combustion Process in the Grate Fired Boilers

摘要

A The aim of presented work is determination of influence of combustion factors on the emission of harmful substances, like CO{sub}2, CO, SO{sub}2 and NO during co-combustion process of coal and waste water sludge. Six parameters were taken for analysis: the sludge to coal ratio, water contents in the sludge, fuel layer thickness on the grate, time of complete process, air excess ratio and its distribution along the grate. Mathematical formulas defining emission rates as functions of above mentioned parameters have been found.