Pilotversuche zur oxidativen Dioxinminderung in Abgasen von Krematorien
1997
To reduce PCDD/F-emissions especially in combustion processes expensive measures are necessary. In a pilot study cremation-exhaust-gas was cleaned with the help of activated oxygen-structures. After passing the exhaust gas ventilator and before releasing all the gases into the chimney a part of the cremation-exhaust-gas was separated in a bypass and given the oxidative treatment with a new type of ozone-generator while these gases were passing the reaction space with an enlarged diameter. The analytic measurements were performed according to VDI/DIN-standard procedures. As a result it must be stated that the PCDD/F mass flow of the exhaust gases was decreased significantly in all the test-experiments. An important aspect is given by the fact that the congeneric structure was almost not influenced by the treatment while passing the reaction space. The PCDD/F-emissions were degraded with meanrates between 40% and 60%. These findings clearly demonstrate, that the treatment of cremation-exhaust-gases with activated oxygen structures is suitable to deminish the emissions of PCDD as well as PCDF molecules.
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