سينا ناصري

In recent decades, the growing consumption of fossil fuels in power plants an‎d heavy industries has resulted in the emission of large amounts of sulfur oxides, which contribute to acid rain formation an‎d pose serious threats to human health, thus ranking among the major environmental challenges. In this study, aiming to indigenize flue gas desulfurization (FGD) technology, a laboratory-scale system comprising a combustion chamber an‎d a bubble scrubber was designed an‎d constructed. To generate pollutants, a model fuel based on gasoline an‎d thiophene was prepared at a volume of 39 mL for each test, an‎d the resulting exhaust gases were treated using water an‎d sodium hydroxide solutions at concentrations ranging from 1% to 15% (v/v). Absorption efficiency was eva‎luated through barium sulfate precipitation, an‎d pH variations of the solutions were monitored. The results indicated that pure water had a limited capacity an‎d, even at a volume of 3000 mL, its efficiency remained unstable. A 1% sodium hydroxide solution achieved high initial efficiency; however, rapid pH decline reduced its stability. At intermediate concentrations (5–7.5%), a desirable balance between high efficiency an‎d moderate pH decrease was achieved. At higher concentrations (10% an‎d 15%), removal efficiencies exceeding 96% were obtained, amLompanied by nearly complete chemical stability. These findings demonstrate that the concentration of the absorbent solution plays a more decisive role than its volume, an‎d solutions in the 5–10% range represent the most suitable option for industrial application. Overall, this research, by providing reliable experimental data, confirmed the high efficiency of sodium hydroxide in sulfur dioxide removal an‎d identified the optimal range of operating conditions. The outcomes can serve as a foundation for the design of pilot an‎d industrial units in the country an‎d represent a step toward reducing reliance on imported technologies while enhancing the environmental performance of power plants.

گوگردزدايي از گاز دودكش , دي‌اكسيد گوگرد , اسكرابر حبابي , سود سوزآور , نيروگاه

Flue gas desulfurization , sulfur dioxide , bubble scrubber , sodium hydroxide , power plant

Sina Naseri

Dr.Salman Movahedirad