標準 石炭火力 發全所의 最適燃燒關理 方案에 관한 硏究
(A) Study on ptimal combustion management of a typical coal-fired power plant
석탄 화력발전소 최적연소관리 환경공학 환경보전;
- 원문 URL
All subsidiary company of KEPCO (Korea Electric Power Cooperation) have been focus on optimal combustion management to reduce the electricity production cost. The purpose of this study was to confirm the usefulness of the computing program for the optimal combustion management which was developed to calculate the optimal combustion conditions at any coal blending as well as any kind of the coal in typical Coal-Fired power plant. The highest heat loss of the Coal-Fired boiler was due to heat loss in dry flue gas which occupied 40%. Therefore, the optimal combustion management was to minimize the heat loss of the dry flue gas controling the unburned carbon quantity which did not exceed 5% for the ash recycling. The heat loss of the dry flue gas and the unburned carbon could be controled by the air-fuel ratio (AFR) of the boiler. AFR was calculated by the comparison with the boiler design coal and the fired-coal. Also, the functions between the excess air and the unburned carbon quantity was found using the combustion data. The combustion management program was made to calculate the AFR more easily. The results from the single coal combustion test using the combustion management program showed the average errors of +0.056 in AFR and +0.04 in unburned carbon between the estimation and the actuality. Then, the combustion management program was revised to reflect such errors for blended coal combustion test. The results of the blended coal combustion test using the revised combustion management program showed the average errors of -0.004 in AFR and +0.06 in unburned carbon. The combustion management program was applied to the unit 6 of the H thermal plant for 1 year. As results, the excess air and unburned carbon were decreased by 0.3% and 0.34%, in respectively. These results showed very favorable cost advantage.
- 이 논문과 함께 이용한 콘텐츠