CAJ | 학술논문

在O2/CO2气氛和不同温度下,在沉降炉中对分别添加2种吸附剂的2种典型褐煤进行了燃烧试验,研究了高岭土和石灰石对碱金属、重金属和硫的吸附以及温度对PM1排放特性的影响.结果表明:高岭土与煤中金属发生吸附反应,而石灰石吸附了大量的硫,使金属和硫由小于1μm的颗粒向大于1 μm的颗粒转移;添加吸附剂后,2种煤的PM1排放均明显减少,且均在1 100 ℃时减排效果最好.对PM1的减少率进行比较发现,A煤添加高岭土比B煤添加高岭土的效果好,而B煤添加石灰石比A煤添加石灰石的效果好.
재O2/CO2기분화불동온도하,재침강로중대분별첨가2충흡부제적2충전형갈매진행료연소시험,연구료고령토화석회석대감금속、중금속화류적흡부이급온도대PM1배방특성적영향.결과표명:고령토여매중금속발생흡부반응,이석회석흡부료대량적류,사금속화류유소우1μm적과립향대우1 μm적과립전이;첨가흡부제후,2충매적PM1배방균명현감소,차균재1 100 ℃시감배효과최호.대PM1적감소솔진행비교발현,A매첨가고령토비B매첨가고령토적효과호,이B매첨가석회석비A매첨가석회석적효과호.
Combustion experiments on two typical lignites respectively added with two absorbents were carried out in a drop-tube furnace under O2/CO2 atmosphere, so as to study the absorption property of limestone and kaolin for alkali/heavy metal and sulfur, as well as the influence of temperature on PM1 emission characteristics. Results show that kaolin reacts with metals during coal combustion while limestone absorbs a large amount of sulfur particles, which result in size growth of metallic and sulfur particles from below to above 1(m; PM1 emission can be obviously reduced for the two lignites after being added with above absorbents;the best reduction effect of PM1 emission occurs at 1 100 ℃; to the reduction of PM1 emission, kaolin absorbent is more effective for coal A while limestone is more effective for coal B.