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수용액에서의 질소산화물 흡수 ; I. 다공판탑의 흡수효율
NOx Absorption into Aqueous Solutions ; I. Absorption Efficiency of NOx for a Sieve Tray Column
HWAHAK KONGHAK, August 1986, 24(4), 255-261(7), NONE
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Abstract
다공판탑을 이용하여 물에 의한 질소산화물의 흡수에 관한 연구를 수행하였다. 질소산화물의 농도, 기체의 유량, 다공판의 기공률의 변화에 따른 질소산화물의 흡수효율을 측정·분석하였다.
질소산화물이 물에 흡수되는 과정은 H2O와의 화학반응을 수반하여 액상에서 HNO3와 HNO2를 생성하고 생성된 HNO2는 HNO3와 NO로 분해되며 분해된 NO는 단사이의 공간에서 담체로 사용된 공기중 산소와 반응하여 NO2로 산화되는 과정이 흡수탑의 단내에서 반복된다고 하여 전개한 흡수모델로부터 얻은 이론값과 실험치를 비교한 결과 비교적 잘 일치하는 경향을 나타내었다.
질소산화물이 물에 흡수되는 과정은 H2O와의 화학반응을 수반하여 액상에서 HNO3와 HNO2를 생성하고 생성된 HNO2는 HNO3와 NO로 분해되며 분해된 NO는 단사이의 공간에서 담체로 사용된 공기중 산소와 반응하여 NO2로 산화되는 과정이 흡수탑의 단내에서 반복된다고 하여 전개한 흡수모델로부터 얻은 이론값과 실험치를 비교한 결과 비교적 잘 일치하는 경향을 나타내었다.
An absorption efficiency of sieve plate column to remove nitrogen oxides with water was studied. The experimental tests were conducted at varying system conditions such as gas concentrations, flowrates as well as sieve porosities. The data collected from experimental measurements were analysed to give an account of nitrogen oxides removal efficiencies.
The absorption process was supposed to accompany chemical reaction of NOx with water to produce HNO3 and HNO2 in the liquid phase. The subsequent dissociation of HNO2 resulting in the formation of HNO3 and giving off gas product NO, the latter is oxidized in the free board by O2 of air flow thus completing the process. It is assumed that this process repeats in the course of absorber operation.
The validity of the theoretical model proposed in this study was shown by the good agreement with expermental results.
The absorption process was supposed to accompany chemical reaction of NOx with water to produce HNO3 and HNO2 in the liquid phase. The subsequent dissociation of HNO2 resulting in the formation of HNO3 and giving off gas product NO, the latter is oxidized in the free board by O2 of air flow thus completing the process. It is assumed that this process repeats in the course of absorber operation.
The validity of the theoretical model proposed in this study was shown by the good agreement with expermental results.
