CAJ | 학술논문

为研究燃煤发电厂汞的排放，通过采集不同容量机组的静电除尘器底灰及烟气中飞灰，分析了各个电场下部底灰中的汞含量。结果表明：相比其他因素，煤中携带的汞含量对底灰中汞分布影响最大，煤在完成燃烧后将大部分汞转移到了电除尘底灰中；在电除尘的各级电场中，飞灰汞浓度呈现逐级上升后再下降的趋势。不同电场汞浓度差异的原因与烟气颗粒物的大小及电除尘内部烟气流速有关。
위연구연매발전엄홍적배방，통과채집불동용량궤조적정전제진기저회급연기중비회，분석료각개전장하부저회중적홍함량。결과표명：상비기타인소，매중휴대적홍함량대저회중홍분포영향최대，매재완성연소후장대부분홍전이도료전제진저회중；재전제진적각급전장중，비회홍농도정현축급상승후재하강적추세。불동전장홍농도차이적원인여연기과립물적대소급전제진내부연기류속유관。
In order to research mercury emission of coal-fired power plants, the paper analyzes mercury con-tent in bottom ash below electric fields by collecting bottom ash of electrostatic precipitators of units with dif-ferent capacities and fly ash in flue gas. The result shows that the mercury content in the coal influences mer-cury distribution in bottom ash most; most of the mercury in the burnt coal is transferred to bottom ash of electrostatic precipitator; in each electric field level of electrostatic precipitator, the mercury content in the fly ash tends to increase level by level and then decreases. The mercury content differences in different elec-tric fields are related to particles in flue gas and flow rate of flue gas in electrostatic precipitators.