Characteristics of deposit formation in scr system for varying temperature and flow rate of exhaust gases -a study using xrd

Prabhu, Sadashiva S and Nayak, Nagaraj and Kapilan, N (2020) Characteristics of deposit formation in scr system for varying temperature and flow rate of exhaust gases -a study using xrd. International Journal of Mechanical and Production, 10 (2). pp. 2249-8001. ISSN 2249-6890

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Abstract

To mitigate environmental pollution due to NOx emitted from exhaust of diesel engines, the automobile manufacturers are adopting technique called “Selective Catalytic Reduction (SCR) System” for modern automobiles. The reducing agent NH3 is generated by spraying Urea-Water Solution (UWS). When exhaust temperature is low, the overdosing of UWS is necessary; but it results in deposits of urea and its by-products. The temperature and Reynolds number have significant effects on ammonia generation and urea deposits. In the present work, investigation is done for deposit formation considering temperature and flow rate as variables. The results show that the urea deposits obtained at open reactor vessel and in hot air test bench are different with their crystallanity, quantity and type. However, EDAX indicates urea as a major constituent in the deposits at low exhaust temperatures.

Item Type: Article
Uncontrolled Keywords: SCR, Deposit Formation, Temperature, Flow Rate , XRD
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 24 Jul 2021 08:45
Last Modified: 24 Jul 2021 08:45
URI: http://eprints.manipal.edu/id/eprint/157070

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