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공기다단 석탄버너에서 연소공기 유동조건에 따른 NOx 배출특성에 관한 연구
김혁제,송시흥,김상현,이익형 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.11
Coal-burning utilities are facing a major NOx control compliansce due to the heavy emission regulation. In response to this challenge, some applicative technologies to effectively reduce NOx are developed and applied in the pulverized coal power plants. One of these is low NOx burner(LNB) equipped with multi-staged air register. In this study, NOx emission rate and flame shapes are investigated with secondaary and tertiary air flow conditions in air staged coal nurner, and the optimal windows of flow conditions to minimize NOx emission rate are found out. The test conditions treated in this study are flow rate, swirl direction and intensity and throat injection velocity of secondary tertiary air.