CAJ | 학술논문

针对钢铁厂烧结工序的连续性和稳定性对余热发电的影响,进行了某钢铁厂400 m2烧结余热发电补燃装置的设计,并对补燃炉内的燃烧和气氛分布情况进行了数值模拟.结果表明：以高炉煤气为主要燃料、焦炉煤气为辅助燃料的余热发电补燃装置安装在余热锅炉进口烟道中,通过补燃可将烟气温度提升60~140 K;补燃炉内的燃烧温度最高可达到1 500℃左右,炉膛出口处的烟气温度为1 120℃,出口处的CO体积分数为0.15%,燃尽率较高.
침대강철엄소결공서적련속성화은정성대여열발전적영향,진행료모강철엄400 m2소결여열발전보연장치적설계,병대보연로내적연소화기분분포정황진행료수치모의.결과표명：이고로매기위주요연료、초로매기위보조연료적여열발전보연장치안장재여열과로진구연도중,통과보연가장연기온도제승60~140 K;보연로내적연소온도최고가체도1 500℃좌우,로당출구처적연기온도위1 120℃,출구처적CO체적분수위0.15%,연진솔교고.
To overcome the frequent shutdown problem occurring in waste heat power generation caused by unstable operation of the sintering machine in the steel plants,a supplemental burner was designed for a 400 m2 sintering waste heat boiler,in which the supplemental combustion and gas distribution were numerically simulated.Results show that by taking blast furnace gas as the main fuel and coke oven gas as the auxiliary fuel,the supplemental burner,installed in the inlet flue duct of waste heat boiler,can help to raise the flue gas temperature by 60-140 K;the temperature in supplemental combustion chamber may get up to 1 500 °C,while the outlet temperature of flue gas can get to about 1 120 °C and outlet volumetric fraction of CO keep at 0.15%,showing a high burn-off rate.