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A Study on Fuel NOx Emission Characteristics in Coal Combustion  

Kim, Sung Su (Department of Environmental Energy Systems Engineering, Graduate School of Kyonggi University)
Choi, Hyun Jin (Department of Environmental Energy Systems Engineering, Graduate School of Kyonggi University)
Lee, Hyun Dong (Fossil Fuel Combustion Power Generation Laboratory)
Kim, Jae-Kwan (Fossil Fuel Combustion Power Generation Laboratory)
Hong, Sung Chang (Department of Environmental Energy Systems Engineering, Kyonggi University)
Publication Information
Applied Chemistry for Engineering / v.20, no.6, 2009 , pp. 675-680 More about this Journal
Abstract
This article describes NO emission characteristics in SM coal combustion. Combustion experiments was performed in the method of increasing temperature after feeding coal and feeding coal after increasing temperature. NOx emission is in inverse proportion to combustion temperature at the fuel rich condition and it was caused by conversion fuel N to $N_{2}$ at the strong reduction condition. In addition, feeding gas flow rate increased as total fuel NOx increase by conversion of fuel N to NO at the oxidation condition. It could be separated in total fuel-N, volatile-N, char-N to NO according to analysis of total fuel NO emission from char combustion at each temperature. In the result, almost total NOx emission was caused by volatile-N in SM-coal.
Keywords
coal combustion; char-N; reduction; NOx emission;
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