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이형근,최원길,박영성 大田大學校 環境問題硏究所 1997 환경문제연구소 논문집 Vol.2 No.-
Recently the more stringent emission standards of government promulgate the incentive for developing the technology capable of simultaneous removal of SO₂ and NOx from flue gas. This study was to develope an enhanced absorbent in reactivity and adsorption ability for removing SO₂and NOx from flue gas. The characteristics of spray drying absorption(SDA) process and status of SDA process were studied, as well as analysis of properties of absorbent and its manufacturing method. CaO, MgO, and NaHCO₃were selected as a alkali reagent, and they were mixed with fly ash(FA) or activated carbon powder(AC) and their the reactivity and adsorption ability toward SO₂and NOx were greatly enhanced through got water curing process. Among the highest. The surface area of MgO mixed with FA(30%) was greater than NaHCO₃, but the SO₂and NOx removal performance of MgO mixed with FA(30%) was much lower than that of NaHCO₃. The removal quantity of SO₂and NOx per mole of NaHCO₃mixed with FA(30%) was 2.7 mole, this meant that the effect of physical adsorption was greater than chemical reaction between absorbent and acid gases.