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http://dx.doi.org/10.15231/jksc.2017.22.4.035

Operation and Improvement Cases of FGD Non-leakage Type Gas-Gas Heater(GGH) for Coal Fired Power Plants  

Seong, Kijong (Korea South-East Power Company)
Lee, Changsik (Korea South-East Power Company)
Publication Information
Journal of the Korean Society of Combustion / v.22, no.4, 2017 , pp. 35-42 More about this Journal
Abstract
This case covers the issues related to the operation problem, cause analysis and improvement cases of the FGD that employed the non-leakage type GGH in coal-fired power plant for the first time in Korea. In the Cooler, there was a main problem that the tube is damaged by the ash cutting due to the high velocity of flue gas in the duct and by the weak wear resistance of material. In the Reheater, there was a main problem that the tube was corroded due to chlorine and sulfur in the circumstance of the low temperature. In order to solve those problems, we have improved the Reheater tube and tube fins by coating enamel to reduce corrosion rate.
Keywords
Non-leakage type GGH; Emission standard; Ancor; Enamel coating;
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