The paper presents an assessment of the impact of waste co-combustion in a cement kiln on air emissions of HCl and SO2 recorded continuously. The subject of the research was cement kiln (dry method) with a capacity of 8500 Mg/day, equipped with a four cyclone heat exchangers and a calciner with an additional chamber for co-incineration. In the analysed period alternative fuels (mainly waste) were used in various amounts ranging up to about 35 kg / Mg clinker (with the heat substitution up to 20%) in the kiln and calciner. Chlorine and sulfur inputs to the process were up to 0.21 and 0.24 kg/Mg clinker, respectively. The results showed no significant effect of waste quantities and input rates of chlorine and sulfur (introduced with alternative and conventional fuels) on air emission of HCl and SO2 from the cement kiln.

English title: Waste co-combustion in dry cement kiln and emission of sulfur dioxide and hydrogen chloride.