This work aims at testing the suitability of waste wood as feedstock in an industrial combustion unit. Firstly, an extensive characterization of properties relevant for combustion was performed on two samples of waste wood and one sample of natural wood for comparison. Both waste wood samples were found to contain significantly higher amounts of metals such as iron and titanium than natural wood. However, one sample was much richer than the other one in all types of impurities, which resulted in a particularly high amount of ash (about 10 w %), and the sample was also found to contain many fine particles. These observations seemed to be explained by an external pollution of the sample by soil. Then, experiments were carried out in a bench-scale fixed-bed combustion unit on the different samples under variable conditions of air flow. All samples could be successfully burnt. However, the waste wood sample polluted with soil appeared to have a lower conversion rate due to its heterogeneity of particle size. A separation between fines and the rest of the sample seemed to solve this issue. Regarding gas emissions, as expected, both waste wood samples gave rise to higher amounts of NO_x emissions than natural wood due to their content.

这项工作旨在测试废木材作为工业燃烧装置中原料的适用性。首先，对两个废木材样品和一个天然木材样品进行了与燃烧有关的特性的广泛表征，以进行比较。发现这两个废木材样品都含有比天然木材高得多的金属，例如铁和钛。但是，在所有类型的杂质中，一个样品比另一个样品富得多，这导致特别高的灰分（约10 w％），并且还发现该样品包含许多细颗粒。这些观察似乎是由土壤对样品的外部污染所解释的。然后，在工作台规模的固定床燃烧装置中，在空气流量变化的条件下，对不同的样品进行了实验。所有样品均可成功燃烧。然而，受土壤污染的废木材样品由于其颗粒尺寸的异质性而具有较低的转化率。将罚款与其余样本分开似乎可以解决这个问题。关于气体排放，正如预期的那样，两种废木料样品均导致较高的NO含量。_x由于其含量比天然木材的排放量大。