Exhaust Gas Denitrifing System using Urea as a Reducing Agent and Denitrifing Method using the System

摘要

The present invention relates to an exhaust gas NOx removal system for the denitration of NOx in the exhaust gas, in particular storage tank elements can preferably be injection the number of elements in the 40% to the reaction chamber and the conversion of ammonia in the reaction catalyst dissolved in NO, It relates to an exhaust gas denitration system by the number of elements, comprising a step of NOx removal of NOx through a chemical reaction that changes the NO ₂ to N _2.; According to a first embodiment of the invention, an exhaust gas NOx removal system according to the present invention, and stores the number of elements and the number of elements for adjusting the injection amount of urea water supply, the air supply unit to control the amount of air injected together with the urea , the number of supply and the number of components supplied from the air supply element with a and ejecting portion for ejecting air, the number of injection of the elements from the injection assembly, and air is mixed with exhaust gas chemistry which form a mixed gas and urea water is converted to ammonia of the reaction chamber the reaction occurs, the nitrogen oxide in the mixed gas from the reaction chamber and equipped with a catalyst, and the reactor is a chemical reaction that is converted to nitrogen by the denitrification reaction in the catalyst takes place, the discharge from the reactor gas mixture of nitrogen It characterized in that it comprises the oxides, nitrogen oxides, ammonia analyzer to analyze the amount of ammonia.