Hassan Raza, Yanghwa Kim, Ocktaeck Lim, Kwang-Chul Oh, Hongsuk Kim
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Improvement of De-NOx Performance of a SCR System by Dual-Point Ammonia Injection in a Diesel Engine
Selective catalytic reduction (SCR) catalysts is used widely to reduce NOx emissions from diesel engines. However, improvements in de-NOx performance are required to meet future standards of near-zero NOx emissions. This study examines the effectiveness of dual-point NH3 injection technology, in which gaseous NH3 is injected into both closed coupled and under floor SCR catalysts. The NOx removal efficiency of dual-point NH3 injection is compared with that of single-point injection in a World Harmonized Transient Cycle test. The results show that dual-point injection of NH3 gas can effectively reduce NOx emissions from diesel engines due to superior temporal and spatial distribution of NH3 gas in an SCR catalyst.
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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