Usage of By-product to Increase Alkalinity of Seawater and Effect of Alkalinity on the Efficiency of Flue Gas Desulfurization = Usage of By-product to Increase Alkalinity of Seawater and Effect of Alkalinity on the Efficiency of Flue Gas Desulfurization

다국어 초록 (Multilingual Abstract)

Many power plants tend to be built in place close to the seashore because large amount of cooling water is used. For existing desulfurization method using lime, lots of cost is needed to purchase of lime and transportation and disposal of discharged gypsum waste. Because of these reasons, a lot of research and application of desulfurization utility using seawater is actively being conducted. In this study, by-products from industrial combustion process were investigated as an alternative material to increase the alkalinity to utilize them for substituting agents of limestone or lime in wet scrubbing units. The effect of water-gas ratio and alkalinity of absorbing solution on the removal efficiency of flue gas desulfurization was investigated and found that alkalinity enhanced by industrial by-products and affected to SO2 removal efficiency. The results provided promising possibility for total alkalinity of seawater using by-products from coal-fired power plants.