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HWAHAK KONGHAK,
Vol.36, No.1, 1-7, 1998
Vol.36, No.1, 1-7, 1998
코크스 충전로에서 미분탄의 연소거동
Combustion Behavior of Pulverized Coal in Coke Bed Furnace
코크스 충전로에서 미분탄 연소에 관한 기초연구를 수행하였다. 이 실험에서 산소부화방법, 미분탄 취입lance위치, 탄종 등의 변화가 미분탄 연소성에 미치는 영향을 조사하였다. 부화하는 산소를 미분탄과 함께 취입하는 oxy-coal 방법이 열풍로를 통해 산소부화를 하는 종래의 방법에 비해 미분탄의 연소효율이 10% 정도 높았다. 그러나 열풍 중 산소가 25% 이상에서는 연소대의 가스온도가 저하하였으며, 미분탄의 연소효율의 증가가 현저하게 둔화되었다.
A fundamental investigation on combustion behavior of pulverized coal has been carried out by using the coke bed experimental furnace. In this furnice, experiments are executed with varing of the oxygen enrichment methods, the position of the coal injection lance, coal brends etc. The coal combustibility of the oxy-coal system that the oxygen was injected with the coal through the oxy-coal lance was about 10 % higher than that of the conventional oxygen enrichment method that the oxygen was enriched in the hot stove. However, when the oxygen content of hot blast was higher than 25 %, the maximum gas temperature in the raceway zone was decreased and combustibility of coal was not increased greatly.
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