当前位置: X-MOL 学术Particuology › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Fluidization of binary mixtures of sisal residue and sand: A new model for deriving the final fluidization velocity
Particuology ( IF 3.5 ) Pub Date : 2018-03-21 , DOI: 10.1016/j.partic.2017.11.006
David Vasconcelos , Gabriele Batalha , Luis Gabriel Pereira , Carlos Augusto Pires

The influence of different factors on the fluidization of a binary mixture of sisal residue and sand was investigated. The particle sizes of the sand and sisal residue were varied from 0.2 to 0.8 mm and the biomass mass fractions from 2% to 9%. Some segregation was noted, and a significant relationship was found among the final fluidization velocity (Uff), the biomass and sand sizes, and the biomass mass fraction. A novel model was developed for predicting Uff, leading to an average discrepancy of 12.69% between the measured and predicted Uff compared with the best match of 15.32% when using a model from a previous paper. The new model was applied to data from studies using other biomass and a broad range of particle characteristics. The average divergences from measured values when using the new model were 7.9% for corn cob and walnut shell, and 20.5% for sweet sorghum bagasse, tobacco residue, and soy hulls. These were superior to the values derived using other models. Our results confirm the accuracy of the model developed in this work and show that it represents a viable alternative way to calculate Uff for a binary mixture of sand and biomass.



中文翻译:

剑麻残渣和沙子的二元混合物的流化:推导最终流化速度的新模型

研究了不同因素对剑麻残渣和沙子二元混合物流态化的影响。沙和剑麻残渣的粒径从0.2到0.8 mm不等,生物质质量分数从2%到9%不等。注意到一些偏析,并且在最终流化速度(U ff),生物质和砂粒尺寸以及生物质质量分数之间发现了显着的关系。开发了一种用于预测U ff的新模型,从而导致实测Uff与预测U ff之间的平均差异为12.69%相比之下,使用前一篇论文中的模型时,最佳匹配为15.32%。该新模型已应用于使用其他生物质和广泛的颗粒特征进行的研究数据。使用新模型时,与实测值的平均偏差为:玉米芯和核桃壳为7.9%,甜高粱渣,烟草残渣和大豆壳为20.5%。这些优于使用其他模型得出的值。我们的结果证实了在这项工作中开发的模型的准确性,并表明它代表了一种可行的替代方法来计算沙子和生物质的二元混合物的U ff

更新日期:2018-03-21
down
wechat
bug