습식배연탈황공정의 SO₂ 제거효율이 낮은 공정이나 또는 스케일의 형성, 석회석 이용도의 저하 등 여러 문제가 발생된 공정을 대상으로 공정 설비를 교체 또는 보수하지 않고 반응용액 중에 첨가제를 주입하여 제거효율을 높일 수 있다. 첨가제로서의 유기산 용액은 물질전달속도를 향상시키는 역할을 한다. 본 연구에서는 기술적 신뢰성과 SO ₂ 제거효율을 향상시킬 수 있는 첨가제의 특성을 연구하였다. 첨가제의 영향을 고려한 석회석의 반응성을 예측하기 위하여 평형반응과 approximatesurface renewal theory를 이용한 모델을 구성하고 수치해를 구할 수있는 알고리즘을 개발하였다. 또한 enhancement factor를 증가시키기 위한 첨가제 선택기준을 제시하고 부산물로 생산된 유기산 혼합 용액의 효과와 선택성에 관한 모사를 수행하였다.

In the existing wet flue gas desulfurization processes which have problems of low SO₂ removal efficiency, formation of scale and low limestone utilization, the adding additives to the reactants help enhance SO₂ removal. This is quite attractive since no process changes or large capital expenditure are needed. The organic acid additives enhance the rate of mass transfer. In this work, the properties of additives were studied to improve the reliability and to increase SO₂ removal efficiency. SO₂ absorption into organic solutions were modeled by approximate surface removal theory and equilibrium reaction equations and a solution algorithm for numerical solution was developed. Also the criteria of selection of additives were suggested. The mass transfer enhancement by mixed organic acid, which was a byproduct of a company, was tested theoretically as an inexpensive alternative additive.

Flue Gas Desulfurization Organic Acid Additive Approximate Surface Renewal Theory SO₂ Absorption

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