@article{ART003212718},
author={Woohyeon Hwang and Kyung-Ok Lee},
title={Design and Analysis of a Direct Injection Nozzle to Minimize Ammonia Slip in a SCR System},
journal={Journal of The Korea Society of Computer and Information},
issn={1598-849X},
year={2025},
volume={30},
number={6},
pages={139-145}
TY - JOUR
AU - Woohyeon Hwang
AU - Kyung-Ok Lee
TI - Design and Analysis of a Direct Injection Nozzle to Minimize Ammonia Slip in a SCR System
JO - Journal of The Korea Society of Computer and Information
PY - 2025
VL - 30
IS - 6
PB - The Korean Society Of Computer And Information
SP - 139
EP - 145
SN - 1598-849X
AB - This study optimizes an integrated NH₄OH direct-injection nozzle and static mixer design for coal-fired SCR systems to enhance NOx removal efficiency while minimizing ammonia slip. Through multiphysics CFD analysis coupled with Phase Doppler Particle Analyzer (PDPA) validation, we achieved NH₃/NOₓ molar ratio uniformity of 8.3% RMS, velocity distribution uniformity of 2.7% RMS, temperature deviation of ±0.4°C, and total pressure loss of 110.0 mmH₂O, surpassing all design targets. The optimized configuration demonstrated 2.7 times higher velocity uniformity and 25 times greater temperature homogeneity compared to conventional systems. By eliminating urea decomposition reactors and implementing a synchronized nozzle-mixer design, this approach reduces system complexity while ensuring operational reliability under dynamic load conditions, providing a practical solution for industrial NOₓ abatement.
KW - Selective Catalytic Reduction (SCR);NH₄OH direct injection;Computational Fluid Dynamics (CFD);NH₃/NOₓ molar ratio;Flow uniformity;Static mixer
DO -
UR -
ER -
Woohyeon Hwang and Kyung-Ok Lee. (2025). Design and Analysis of a Direct Injection Nozzle to Minimize Ammonia Slip in a SCR System. Journal of The Korea Society of Computer and Information, 30(6), 139-145.
Woohyeon Hwang and Kyung-Ok Lee. 2025, "Design and Analysis of a Direct Injection Nozzle to Minimize Ammonia Slip in a SCR System", Journal of The Korea Society of Computer and Information, vol.30, no.6 pp.139-145.
Woohyeon Hwang, Kyung-Ok Lee "Design and Analysis of a Direct Injection Nozzle to Minimize Ammonia Slip in a SCR System" Journal of The Korea Society of Computer and Information 30.6 pp.139-145 (2025) : 139.
Woohyeon Hwang, Kyung-Ok Lee. Design and Analysis of a Direct Injection Nozzle to Minimize Ammonia Slip in a SCR System. 2025; 30(6), 139-145.
Woohyeon Hwang and Kyung-Ok Lee. "Design and Analysis of a Direct Injection Nozzle to Minimize Ammonia Slip in a SCR System" Journal of The Korea Society of Computer and Information 30, no.6 (2025) : 139-145.
Woohyeon Hwang; Kyung-Ok Lee. Design and Analysis of a Direct Injection Nozzle to Minimize Ammonia Slip in a SCR System. Journal of The Korea Society of Computer and Information, 30(6), 139-145.
Woohyeon Hwang; Kyung-Ok Lee. Design and Analysis of a Direct Injection Nozzle to Minimize Ammonia Slip in a SCR System. Journal of The Korea Society of Computer and Information. 2025; 30(6) 139-145.
Woohyeon Hwang, Kyung-Ok Lee. Design and Analysis of a Direct Injection Nozzle to Minimize Ammonia Slip in a SCR System. 2025; 30(6), 139-145.
Woohyeon Hwang and Kyung-Ok Lee. "Design and Analysis of a Direct Injection Nozzle to Minimize Ammonia Slip in a SCR System" Journal of The Korea Society of Computer and Information 30, no.6 (2025) : 139-145.
