Experimental investigation of removal of sulfur dioxide from exhaust gas by using semi-dry flue gas desulfurization (FGD)
Natrayan Lakshmaiya, V. Sakthi Murugan
Abstract
Many coal-fired power generators use moderate exhaust gas systems or components to eliminate hydrogen sulphide from exhaust gases. The SO2 is eliminated by potassium adsorbent in a responsive dryer in mid FGD devices; however, the amount of dehydrogenation is smaller than that in wet FGD structures. The impacts of eight chemicals in exhaust gas dehydrogenation are studied in this study: mg, NaOH, potassium nitrate, ammonia solution, ammonium salts, hypochlorite, acetic acid, as well as nitrogen. Drilling fluids containing 2 and 8 wt% of addition with magnesium carbonate levels of 10 and 20 wt% were utilized to remove sulphur dioxide. Ammonium-containing additives accelerated sulphur dioxide elimination as well as boosted feedback and comments. Whenever a solution comprising 4% anhydrous ammonia and 12% CaO was applied to the exhaust gases, this same carbon dioxide level was decreased by 69.8%. Compared to the most significant win achieved with ca (OH)2 slurry with no addition, this solution boosted sulphur dioxide reduction by about 18.5%.