SELECTIVE NON-CATALYTIC REDUCTION SYSTEM

摘要

The present invention relates to a selective non-catalytic reduction system capable of improving processing efficiency to secure valid reaction temperature for removing nitrogen oxides in an exhaust gas. The selective non-catalytic reduction system according to the present invention includes: a reducing agent supply device (30) for nitrogen oxides removal; a reducing agent injection line (32) which is extended toward a combustion chamber of an engine (2) from the reducing agent supply device (30); and a reducing agent spraying nozzle (36) which is installed in the engine (2) and sprays the reducing agent supplied from the reducing agent injection line (32) into the combustion chamber. According to the present invention, the selective non-catalytic reduction system of the present invention can meet the valid reaction temperature easily by spraying the reducing agent into the combustion chamber of the engine directly through the reducing agent spraying nozzle, and can be applied to the existing diesel engine easily without an additional facility to secure or decrease the valid reaction temperature.