CAJ | 학술논문

某燃用高硫无烟煤 W火焰锅炉,日常运行存在结焦严重、锅炉效率低等问题,通过适当提高运行氧量、降低A/D磨煤机煤粉细度、关小乏气挡板、开大燃烧器B风门、关小燃烧器F风门等优化调整后,排烟温度由148．9℃降至145．4℃,CO含量由675μL/L 降至37μL/L,飞灰含碳量由5．00％降至2．87％,未燃碳损失由2．49％降至1．74％,锅炉热效率由89．82％提高至90．93％,观火孔处挂焦量明显减少,捞渣机处渣量明显增多,锅炉掉焦次数减少,炉膛结焦状况明显改善.
모연용고류무연매 W화염과로,일상운행존재결초엄중、과로효솔저등문제,통과괄당제고운행양량、강저A/D마매궤매분세도、관소핍기당판、개대연소기B풍문、관소연소기F풍문등우화조정후,배연온도유148．9℃강지145．4℃,CO함량유675μL/L 강지37μL/L,비회함탄량유5．00％강지2．87％,미연탄손실유2．49％강지1．74％,과로열효솔유89．82％제고지90．93％,관화공처괘초량명현감소,로사궤처사량명현증다,과로도초차수감소,로당결초상황명현개선.
Serious problems of slagging and low thermal efficiency occurred on a W-shaped flame high-sulfur coal fired boiler.Thus,several countermeasures were taken to carry out optimization adj ustment for this boiler,such as properly increasing the operation oxygen content,reducing the coal fineness,closing down the exhaust air damper,opening up the"B"air damper and closing down the"F"air damper.After that,the exhaust temperature dropped from 148.9 ℃ to 145.4 ℃,the CO concentration reduced from 675μL/L to 37μL/L,the carbon content in fly ash decreased from 5.00% to 2.87%,the unburned carbon loss declined from 2.49% to 1.74%,and the boiler thermal efficiency increased from 89.82% to 90.93%.Furthermore, the slagging amount around the fire hole decreased dramatically,while that at the slag-dredger increased sharply.The slagging problem in furnace was significantly improved.