암모니아 스월 버너에서 De-NOx 성능 향상을 위한 암모니아 분사 전략에 대한 수치적 연구
Numerical Study on Ammonia Injection Strategy to Improve De-NOx Performance for Swirl Burner Fueled with Ammonia
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초록
In order to directly apply ammonia as main fuel, research is being actively conducted on NOx reduction technology, which is the main emission from exhaust gas. When ammonia is used as fuel and simultaneously injected into the combustion chamber not only as a main fuel, but also as a reducing agent, a phenomenon similar to the SNCR effect that reduces NOx can be observed. This study objects to improve NOx reduction efficiency in ammonia swirl burners. To observe changes in performance, analysis was performed by changing the secondary injection of ammonia flow rate and injection angle using CONVERGE. As a result, the NOx reduction efficiency could be observed from approximately 69% to 99% depending on each variable, and the secondary ammonia injection flow rate could be optimized according to the secondary ammonia injection angle.
Abstract
In order to directly apply ammonia as main fuel, research is being actively conducted on NOx reduction technology, which is the main emission from exhaust gas. When ammonia is used as fuel and simultaneously injected into the combustion chamber not only as a main fuel, but also as a reducing agent, a phenomenon similar to the SNCR effect that reduces NOx can be observed. This study objects to improve NOx reduction efficiency in ammonia swirl burners. To observe changes in performance, analysis was performed by changing the secondary injection of ammonia flow rate and injection angle using CONVERGE. As a result, the NOx reduction efficiency could be observed from approximately 69% to 99% depending on each variable, and the secondary ammonia injection flow rate could be optimized according to the secondary ammonia injection angle.
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