SPLIT PREHEATER SYSTEM BREAKING THE MERCURY CYCLE - EMISSION ABATEMENT TECHNOLOGY

TIME FOR A CHANGE FACING THE EFFECTS OF MERCURY The cement industry has been identified as second largest gaseous emission source of mercury just behind the conventional combustion of coal in thermal power and heating plants as well as in heating systems. Due to the health effects of mercury exposure, industrial and commercial uses are regulated in many countries worldwide. Mercury is treated as an occupational hazard: A challenge the cement industry is facing every single day – since mercury is present in raw materials and/or in the fuel used in the combustion process. So Mercury enters the...

BREAKING THE MERCURY CIRCLE XMERCURY – THE INNOVATIVE SPLIT PREHEATER TECHNOLOGY As the reduction of mercury emissions in the cement industry is eith­ er linked to high operating costs for fuel and raw material cleaning, flue gas sorbents, or investment costs for flue gas treatment systems, it has been decided to propose a new system combining low investment costs as well as lowest operating costs and minimized ecological footprint. concentration of mercury in the material split preheater water cooling sorbent dosing sorbent bagfilter loaded sorbent The Xmercury split preheater system implemented...

REDUCING EMISSIONS HOW XMERCURY WORKS The Xmercury system is designed as a second preheater line with the following basic principle: A small amount of hot gases is extracted from the lower part of the main preheater. The kiln filter dust (CKD) which is rich in Hg is mixed with the hot gases in the split preheater whereby the Hg evaporates. The hot dust – free of Hg – is separated by high efficiency cyclones and by the special designed hot gas filter. So finally the dust is directly returned to the main preheater and remains in the process without heat losses. Afterwards the dust free gas stream,...

UNITED STRENGHT POWERFUL COOPERATION FOR STRONG SYNERGIES In order to reduce mercury emissions, the Austrian companies Scheuch GmbH as well as A TEC Production& Services GmbH developed a new technical innovation: the Xmercury split preheater system. SUCCESS STORY The first installation at W&P Zement’s cement plant in Wietersdorf Austria, which is in operation since the beginning of 2015, shows impressively the effectiveness of Xmercury. Partly visible cyclones for separation of the heated dust particles after the thermal treatment in the second preheater line The Xmercury split preheater system...

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