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Change of Ammonia Consumption with Gas Turbine Output in DeNOx System for a 580 MW Combined Cycle Power Plant  

Jang, Yong-Woo (Korea Midland Power Co., Ltd.)
Yoo, Ho-Seon (Department of Mechanical Engineering, Soongsil University)
Publication Information
Plant Journal / v.15, no.3, 2019 , pp. 23-28 More about this Journal
Abstract
In this study, ammonia consumption by gas turbine output was adjusted to find out the amount of ammonia consumption that complies with the enhanced Air Quality Preservation Act and internal regulation emission standards in SCR type DeNOx System for a 580 MW Sejong Combined Cycle Power Plant. For measurements, the gas turbine output was varied to 50, 99, 149, 198 MW and ammonia consumption was adjusted with the combustion gas and ammonia supply conditions fixed at each stage. When the emission limit were change from 10 ppm to 8 ppm, ammonia consumption was increased from 78, 93, 105, 133 kg/h to 89, 113, 132, 176 kg/h. The increase rate of ammonia consumption was 14, 22, 26, 32% per output category compared to the 10 ppm emission limit, which was shown to increase as output increased.
Keywords
selective catalytic reduction; Ammonia consumption; NOx Concentration; DeNOx system;
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  • Reference
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