EMISSION FACTORS OF POLLUTANTS FROM THE COMBUSTION OF BROWN COAL IN DOMESTIC APPLIANCES

摘要

Brown coal was combusted in four various types of combustion facilities. They were selected to represent four basic constructions solutions for hot-water boilers from the cost and technical construction point of view.. Concerning the basic qualitative parameters of the combustion process (CO and TOC), the decrease of the values of the emission factors of pollution substances was achieved with the use of modern combustion facilities by about two orders (e.g. for CO from values of approximately 100 g/kg to values of approximately 2 g/kg). The same trend was observed for PAHs (from values of approximately 50 g/kg to approximately 0.3 g/kg). Values of stated emission factors of I-TEQ PCDD/Fs were lower for modern boilers than for boilers with older constructions, but in general the values of these stated EFs was low (about 0.05-1 ng/kg) compared with EFs used for balance calculations in the Czech Republic (6 ng/kg). Evidently, this is caused by the low content of chlorine in the fuel (40 mg/kg). The resulting emission factors show the possibility of decreasing of emissions by the use of modern types of combustion facilities.