Computational study on air jet erosion profiles of selective catalytic reduction honeycomb materials

• Published in: Materials today : proceedings Vol. 5; no. 11; pp. 24177 - 24185
• Main Authors: Nandakishora, Y, Pranav, C.M., Rajath, S., Vijayakumar, R.S., Madhusoodana, C.D.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 2018
• Subjects: Computational fluid dynamics; Discrete phase model; Selective catalytic reduction; Solid particle erosion; Computational fluid dynamics; Selective catalytic reduction; Discrete phase model; Solid particle erosion
• ISSN: 2214-7853; 2214-7853
• DOI: 10.1016/j.matpr.2018.10.212

The study reveals about the air jet erosion properties of Selective catalytic reduction (SCR) catalysts preferably honeycomb modules which are very much necessary for NOx conversion in coal fired thermal power plants. Erosion of catalysts is analyzed based on effects of various angles of impact like 15°, 30°, 45°, 60°, 75° and 90° respectively. Erosion for the same is analyzed both experimentally and with simulation in computational fluid dynamics using Discrete phase model in Ansys software packages and the required ASTM G76 standards are followed. The material constant (k) and velocity exponent (n) required for simulation has been practically derived through experimentation by considering silica sand as the abrasion medium. The maximum catalyst material loss is found at 90° angle of impact. Based on the above said accelerated erosion test results, the life of the catalyst may be approximated by considering the practical conditions of the power plants.