Process Optimization for Simultaneous Flue Gas Desulfurization and Denitrification Using Manganese Ions from Water‐Quenched Slag Slurry
Year: 2025
Type: article
Abstract: Conventional wet flue gas desulfurization and denitrification technologies often suffer from high operational costs and limited efficiency. To address these limitations, this study developed a novel slurry‐based process for the simultaneous removal of SO 2 and NO x using thermally activated water‐quenched manganese slag. Process parameter optimization was conducted employing response surface methodology (RSM) based on a Box‐Behnken Design (BBD). Key factors investigated for their individual and interactive effects on removal efficiency included slag concentration, stirring speed, oxygen concentration, flue gas flow rate, and inlet SO 2 concentration. Results demonstrated that the interaction between flue gas flow rate and slag concentration exerted the most significant influence on desulfurization and denitrification performance. Optimal conditions predicted by the model were: flue gas flow rate = 520 mL min −1 , stirring speed = 1910 rpm, slag concentration = 56 g L −1 , and oxygen concentration = 9.9 vol.%. This study presents an efficient and potentially cost‐effective alternative utilizing industrial waste for integrated flue gas cleanup.
Source: ChemistrySelect
Authors: Xin Yan, Yuanting Zhao, Yansu Luo, Xin Tang, Jinqi Li, Huidong Tang, Yixing Ma, Fei Wang, Lei Shi, Kai Li, Xin Sun
Institution: Kunming University of Science and Technology
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4416824612