Department of Chemical Engineering, University of Castilla-La Mancha, Avda. Camilo José Cela 12, 13071 Ciudad Real, Spain.
Bioresour Technol. 2013 Sep;143:562-74. doi: 10.1016/j.biortech.2013.06.052. Epub 2013 Jun 22.
Combustion characteristics of biomass main components and three lignocellulosic biomass (fir wood, eucalyptus wood and pine bark) were investigated by thermogravimetric analysis coupled with mass spectrometry. The combustion of biomass was divided into two main steps, devolatilization and char oxidation stage. Heating rate effect was also studied. Generally, the higher the heating rate, the higher the decomposition temperature. Furthermore, the weight loss rate decreased due to particle temperature gradients. Combustion kinetics were studied. Models based on reaction order (Oi), nucleation (Ni) and diffusion (Di) achieved the best fitting to the experimental data. Cellulose oxidation presented the highest activation energies. CO, CO2 and H2O were the main components evolved from combustion. Additionally, light hydrocarbons (CH4 and C2H5) were also present. Finally, nitrogen compounds were in a higher proportion than sulfur compounds being released as primary amines and NOx.
采用热重分析-质谱联用技术研究了生物质主要成分及 3 种木质纤维素生物质（冷杉木、桉树和松皮）的燃烧特性。生物质的燃烧可分为两个主要步骤：挥发分析出阶段和炭氧化阶段。还研究了升温速率的影响。一般来说，升温速率越高，分解温度越高。此外，由于颗粒温度梯度的存在，失重速率降低。对燃烧动力学进行了研究。基于反应级数（Oi）、成核（Ni）和扩散（Di）的模型对实验数据拟合效果最好。纤维素氧化呈现出最高的活化能。CO、CO2 和 H2O 是燃烧过程中释放的主要成分，此外还存在轻烃（CH4 和 C2H5）。最后，氮化合物的释放比例高于硫化合物，主要以伯胺和 NOx 的形式释放。
