Concept of Vaporized Urea Dosing in Selective Catalytic Reduction
AbstractThis work tried to identify the influence of dosing vaporized urea solution in a selective catalytic reduction (SCR) system. In the SCR method, optimising the urea evaporation and mixing properties can significantly improve the NOx conversion efficiency in the catalyst. It can also exert a positive effect on the uniformity of NH3 concentration distribution across the catalyst face. The concept of an electrically evaporated urea-dosing system was investigated and it was found that urea pre-heating prior to introduction into the exhaust gas is favourable for enhancing NOx removal under steady-state and transient engine operation. In the urea evaporating system the heating chamber was of a cylindrical tube shape and the urea vapour was introduced into the exhaust by means of a Venturi orifice. The concept urea dosing was only a custom-made solution, but proved to be superior to the regular dosing system operating in the liquid phase. View Full-Text
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Sala, R.; Bielaczyc, P.; Brzezanski, M. Concept of Vaporized Urea Dosing in Selective Catalytic Reduction. Catalysts 2017, 7, 307.
Sala R, Bielaczyc P, Brzezanski M. Concept of Vaporized Urea Dosing in Selective Catalytic Reduction. Catalysts. 2017; 7(10):307.Chicago/Turabian Style
Sala, Rafal; Bielaczyc, Piotr; Brzezanski, Marek. 2017. "Concept of Vaporized Urea Dosing in Selective Catalytic Reduction." Catalysts 7, no. 10: 307.
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