A Study on the Thermal Characteristics of the Selective Catalytic Reduction System

Abstract

Background/Objectives: Environmental regulations have been strengthened due to environmental pollution that occurred in modern society. Therefore, in order to satisfy these environmental regulations, the heat characteristics of Pneumatic Damper Valves, a key component of SCR system, for research and development, will be verified.

Methods/Statistical analysis: In the paper, thermal analysis was performed to develop PDV, a key component of SCR. For thermal analysis, verification of material properties was performed first. The verification was performed through thermal properties and the thermal tensile test for test specimen, and the results were reinforced to the material properties to enhance the reliability of thermal analysis.

Findings: The structural stability of the PDV model was verified through analysis of thermal deformation and thermal stress in total 3 materials (SM400B, SS275, and SB410) applied according to the conditions of use for PDV, with the material properties verified by the thermal material test and the thermal tensile test. The thermal analysis was performed using the finite element program, ANSYS.

Improvements/Applications: The material properties were reinforced by the specimen test, and mesh optimization was performed through the tetrahedron mesh to improve the reliability of thermal analysis. 

Keywords: Selective Catalytic Reduction, Pneumatic Damper Valve, Diesel Engine, Thermal Analysis, Thermal Deformation, Thermal Characteristics