EXHAUST GAS TREATMENT APPARATUS

• Main Authors: LEE GA YOUNG, LEE HYO JIN, KIM JUN HAN, PARK SOO MAN
• Format: Patent
• Language: English; Korean
• Published: 10.08.2022
• Subjects: BLASTING; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; STEAM ENGINES; THEIR RELEVANT APPARATUS; TRANSPORTING; WEAPONS

The present invention relates to an exhaust gas processing apparatus. In one embodiment, the exhaust gas processing apparatus comprises: an inlet line through which exhaust gas flows in; a selective catalyst reduction (SCR) unit which is connected with the inlet line and in which the exhaust gas is introduced, a selective catalyst reduction layer is provided, and a reducing agent containing ammonia (NH_3) is injected to process the introduced exhaust gas and generate a first processed gas from which nitrogen oxide is removed; a discharge line which is connected to a rear end of the SCR unit and discharges the first processed gas; and a circulation line which is connected with the discharge line and the inlet line. The exhaust gas processing apparatus has excellent performance on simultaneously reducing nitrogen oxide and slip ammonia, and preventing secondary fine dusts. 본 발명은 배기가스 처리장치에 관한 것이다. 한 구체예에서 상기 배기가스 처리장치는 배기가스가 유입되는 유입라인; 상기 유입라인과 연결되어 상기 배기가스가 유입되고, 내부에 선택적 환원촉매층이 구비되며, 암모니아(NH3)를 포함하는 환원제가 주입되어 상기 유입된 배기가스를 처리하여 질소산화물이 제거된 제1 처리가스를 생성하는 SCR(선택적 환원촉매) 유닛; 상기 SCR 유닛의 후단에 연결되며, 상기 제1 처리가스가 배출되는 배출라인; 및 상기 배출라인 및 유입라인과 연결되는 순환라인;을 포함한다.