A REACTOR FOR SOLID AMMONIUM SALT AND CONTROL METHODE THEREOF AND NOX EMISSION PURIFICATION SYSTEM WHICH USING SOLID AMMONIUM SALT AND SELECTIVE CATALYTIC REDUCTION CATALYST

摘要

The present invention relates to a technology that reduces nitrogen oxide (NOx), harmful gas discharged from an internal combustion engine or a burner. According to the present invention, solid ammonium salt is placed in a reactor; the solid ammonium salt is changed into ammonia by pyrolizing the ammonium salt using engine cooling water, exhaust gas, or an electrical heater that are installed in the reactor; and ammonia is sprayed by a pressure valve and a dosing valve so as to reduce nitrogen oxide remaining in an vent pipe using a selective reduction catalyst. A first chamber and a second chamber of the reactor are formed to be separated; the temperature of the first chamber is quickly increased up to the temperature at which solid ammonium salt can be pyrolized. Therefore, during initial start-up, nitrogen oxide can be quickly reduced; consumption of energy needed to heat the reactor can be reduced.