Department of Environmental Engineering, Middle East Technical University, Ankara 06531, Turkey.
Bioresour Technol. 2010 Aug;101(15):6177-84. doi: 10.1016/j.biortech.2010.03.022. Epub 2010 Mar 27.
In this study, flue gas emissions and combustion efficiencies during combustion and co-combustion of olive cake and coal were investigated in a bubbling fluidized bed. Temperature distributions along the combustion column and flue gas concentrations of O(2), CO, SO(2) and NO(x) were measured during combustion experiments. Two sets of experiments were performed to examine the effect of fuel composition, excess air ratio and freeboard extension on flue gas emissions and combustion efficiency. The results of the experiments showed that coal combustion occurs at lower parts of the combustion column whereas olive cake combustion takes place more in the freeboard region. As olive cake percentage in the fuel mixture increased, CO emissions increased, SO(2) and NO(x) emissions decreased. Additionally, flue gas emissions could be lowered with the freeboard extension while burning biomass or biomass/coal mixtures. Noticeable decrease in CO emissions and slight increase in combustion efficiencies were observed with a column height of 1900 mm instead of 900 mm.
在这项研究中，在鼓泡流化床中研究了橄榄饼和煤燃烧和共燃烧过程中的烟气排放和燃烧效率。在燃烧实验期间测量了沿燃烧柱的温度分布和烟气中 O(2)、CO、SO(2)和 NO(x)的浓度。进行了两组实验以研究燃料组成、过量空气比和自由空域扩展对烟气排放和燃烧效率的影响。实验结果表明，煤燃烧发生在燃烧柱的较低部分，而橄榄饼燃烧则更多地发生在自由空域区域。随着燃料混合物中橄榄饼百分比的增加，CO 排放量增加，SO(2)和 NO(x)排放量减少。此外，通过自由空域扩展可以降低燃烧生物质或生物质/煤混合物时的烟气排放。与 900 毫米相比，使用 1900 毫米高的柱子可以观察到 CO 排放量的明显减少和燃烧效率的轻微增加。
