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Apparatus For Reducing Dibenzodioxin Emissions And Dibenzofuran Emissions From Transition Metal-Containing Catalyzers
Apparatus For Reducing Dibenzodioxin Emissions And Dibenzofuran Emissions From Transition Metal-Containing Catalyzers
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机译:减少含过渡金属的催化剂中二苯并二恶英排放量和二苯并呋喃排放量的设备
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摘要
A device for reducing the emission of polychlorinated dibenzodioxins (PCDD) and polychlorinated dibenzofurans (PCDF) from transition metal-containing catalyzers for selective catalytic reduction of nitric oxides in the exhaust gas of an internal combustion engine by means of ammonia and/or reducing agents which split off ammonia. At least one catalyzer for oxidizing hydrocarbon-containing PCDD precursor substances and PCDF is arranged upstream of the at least one transition metal-containing SCR catalyzer and/or at least one catalyzer for degrading precursor substances for degrading the polychlorinated dibenzodioxins and/or polychlorinated dibenzofurans is arranged downstream of the at least one transition metal-containing catalyzer. The at least one catalyzer for degrading PCDD and PCDF and/or the at least one catalyzer for oxidizing hydrocarbon-containing precursor substances thereof are/is additionally active for the reduction of nitric oxides by means of ammonia.
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