| 摘要 |
PURPOSE: A complex-type nitrogen oxide processing system is provided to further improve reduction processing efficiency of nitrogen oxide by widening an optimum temperature range of nitrogen oxide reduction reaction by mixing one additive of hydrocarbon and alcohol to a reducer. CONSTITUTION: A complex-type nitrogen oxide processing system includes a non-selective catalytic reduction apparatus and a selective catalytic reduction apparatus. The non-selective catalytic reduction apparatus firstly reduction processes nitrogen oxide included in exhaust gas exhausted from a combustion apparatus(100) using a reducer through a non-selective catalytic reduction method. The selective catalytic reduction apparatus secondly reduction processes nitrogen using a reducer through a selective catalytic reduction method. The non-selective catalytic reduction apparatus is the reductant spray unit spraying one of reducers of urea water and ammonia solution to the combustion apparatus. One of additives of hydrocarbon and alcohol is mixed in the reducer. The reductant spray unit is installed to spray the reducer to the position spaced apart from a combustion room of the combustion apparatus. [Reference numerals] (100) Combustion apparatus;
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