Faculty of Science, Department of Chemistry, Ege University, 35100, Bornova, Izmir, Turkey.
Faculty of Science, Department of Chemistry, Ege University, 35100, Bornova, Izmir, Turkey.
J Environ Manage. 2018 Dec 1;227:155-161. doi: 10.1016/j.jenvman.2018.08.068. Epub 2018 Sep 1.
The impact of torrefaction on the NO and SO emissions from combustion of biomass was investigated. Combustion experiments were carried out with two torrefied biomass fuels, i.e., poultry litter and olive tree pruning and their blends with lignite using a bench scale single particle reactor. For comparison, NO and SO emissions from tests with untorrefied biomasses and their blends with lignite were also investigated. The total release of SO and NO for each fuel was determined at three different temperatures: 900, 1000, and 1100 °C. The NO release from the untorrefied biomasses was found to be lower than those from torrefied biomasses, despite their higher fuel- N content. In case of co-combustion of both raw and torrefied biomass with lignite, the NO release was lower than the anticipated one. On the other hand, in the co-combustion experiments, blends with torrefied biomass showed a larger reduction in SO release than the blends with raw biomass. The study revealed that the SO emissions from blends are not proportional to the mixing ratio of the fuels and to the emissions properties of the respective fuels. No clear correlation was detected between the NO emissions and fuel-N content. In addition to the NO and SO emissions, the sintering propensity of the ash residue were investigated using scanning electron microscopy (SEM).
研究了热解对生物质燃烧过程中 NO 和 SO 排放的影响。使用台式单颗粒反应器，对两种热解生物质燃料（即家禽粪便和橄榄树修剪物）及其与褐煤的混合物进行了燃烧实验。为了进行比较，还研究了未经热解的生物质及其与褐煤混合物的 NO 和 SO 排放。在三个不同温度（900、1000 和 1100°C）下，确定了每种燃料的总 SO 和 NO 释放量。未热解生物质的 NO 释放量低于热解生物质，尽管它们的燃料-N 含量更高。在褐煤与原始和热解生物质的共燃烧中，NO 释放量低于预期。另一方面，在共燃烧实验中，与热解生物质的混合物比与原始生物质的混合物显示出更大的 SO 释放减少。研究表明，混合物的 SO 排放与燃料的混合比和各自燃料的排放特性不成比例。NO 排放与燃料-N 含量之间没有明显的相关性。除了 NO 和 SO 排放外，还使用扫描电子显微镜（SEM）研究了灰渣的烧结倾向。
