2021
DOI: 10.3390/pr9050786
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Abstract: The NH3 uniformity and conversion rate produced by the urea–water solution spray system is an essential factor affecting de-NOx efficiency. In this work, a three-dimensional simulation model was developed with the CFD software and was employed to investigate the effects of two typical injection methods (wall injection and center injection) and three distribution strategies (pre-mixer, post-mixer, pre-mixer, and post-mixer) of two typical mixers on the urea conversion rate and uniformity. The field synergy prin… Show more

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Cited by 10 publications
(4 citation statements)
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“…An effective way to enable more complete UWS decomposition is the application of static mixers [14], which also enhance spatial mixing of UWS droplets and their byproducts with exhaust gas. The most common forms of static mixers are blade-based and baffle mixers aimed at vortex generation [50]. The advantage of blade mixers is their simplicity and the possibility of the use of the blades as impingement plates for droplets [47].…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…An effective way to enable more complete UWS decomposition is the application of static mixers [14], which also enhance spatial mixing of UWS droplets and their byproducts with exhaust gas. The most common forms of static mixers are blade-based and baffle mixers aimed at vortex generation [50]. The advantage of blade mixers is their simplicity and the possibility of the use of the blades as impingement plates for droplets [47].…”
Section: Introductionmentioning
confidence: 99%
“…This shorter distance additionally enabled a slight reduction in the pressure drop. Ye et al [50] analysed the influence of the mixer type, the number of mixers and the injector's position in the SCR system. Two types of mixers were considereda conventional blade mixer and a conventional baffle mixer.…”
Section: Introductionmentioning
confidence: 99%
“…There have been many reports about enhancing the uniformity of NH 3 distribution improve NO reduction. One way is to improve the uniformity of the flow field by setting up deflectors, rectifier grids, and other structures [10][11][12][13][14][15]. Another way is to enhance uniformity at the SCR catalytic zone entrance by changing the operating parameters (i.e., atomization angle, injection position, injection method, and injection velocity) [16,17].…”
Section: Introductionmentioning
confidence: 99%
“…Thus, the pollutant gas from diesel engines seriously pollutes the environment and seriously harms the public's health [4]. The two primary pollutants in a diesel engine are PM and NO x , and the relationship between them is a trade-off [5]. The single internal purification or aftertreatment technology is challenging to reduce PM and NO x emissions [6].…”
Section: Introductionmentioning
confidence: 99%