Simulation Study for Mixing Characteristics of NH3 and Automobile Exhaust in the SSCR System

Abstract:

In this paper we talk about the influence factors to the NH3 spray of Solid Selective Catalytic Reduction (SSCR) system by using AVL FIRE 3D commercial simulation software when NH3 and exhaust gas mix in exhaust passage,the influence factors include: engine condition, NH3 temperature ,nozzle installation angle and nozzle position. The conclusions are as follows:engine condition has much Influence for NH3 and automobile exhaust mixing,the mixing is better,the exhaust flow is larger, the exhaust temperature is high;NH3 initial temperature for the gas mixing has little influence;nozzle angle increases is good for the axial distribution of gas and the gas mixing characteristics; For the SSCR system direct injecting NH3 can optimize the nozzle position, and reduce the exhaust system volume.

• Periodical: Applied Mechanics and Materials (Volume 596)
• Pages: 755-759
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.596.755
• Online since: July 2014
• Authors: Da Wei Qu*, Kai Zhang, Lu Yan Fan, Hai Bo Gao
• Keywords: Angle, Optimization, Position, SSCR, Temperature

References

[1] TAO Jiang-zhong, Study of reduce diesel nitrogen oxides y By selective catalytic reduction (SCR)[D]PhD thesis. Shandong University: (2008).

[2] QIN Yan. Simulation study of NH3 and the gas mixing characteristics for SCR system[J]. Journal of internal combustion engine. 2013(204) 43-47.

[3] Zhilong Li, Jun Deng，Liguang Li，Ling Cao and Zhijun Wu. A Study on the Factors Affecting Heated Wall Impinging Characteristics of SCR Spray，SAE paper，2011-01-1311.

DOI: 10.4271/2011-01-1311

[4] Figen Lacin，Adam Kotrba，Granville Hayworth and Henry Sullivan etc. SOLID SCR®： Demonstrating an Improved Approach to NOx Reduction via a Solid Reductant[J]. SAE paper： 2011-01-2207.

DOI: 10.4271/2011-01-2207