The effect of rolling amplitude and period on particle distribution behavior in a rolling circulating fluidized bed
The effect of rolling amplitude and period on particle distribution behavior in a rolling circulating fluidized bed
复制标题
滚动循环流化床中滚动幅度和周期对颗粒分布行为的影响
DOI：
10.1016/j.powtec.2016.03.018
复制
发表时间：
2016-06
影响因子：
5.2
通讯作者：
Takei, Masahiro
中科院分区：
文献类型：
--
作者：
Nakamura, Yuki;Liu, Kai;Murata, Hiroyuki;Takei, Masahiro
利用电容层析成像（ECT）技术定量研究了滚动循环流化床（RCFB）中滚动振幅和滚动周期对颗粒分布行为的影响。在轧制振幅fromΘ= 2.5°~ 10.0°，轧制周期t = 5.0 ~ 15.0 s的条件下，对冷模RCFB进行了一系列试验。基于ECT传感器捕获的颗粒分布图像，定量估计了颗粒分布行为的三个主要特征，即平均颗粒体积分数、颗粒分布稳定性和颗粒分布均匀性。结果表明，颗粒在RCFB内的分布行为主要受径向惯性力和重力作用下的剪切效应影响。轧制振幅对剪切效应的正向影响使颗粒体积分数增大；然而，颗粒分布变得不稳定和不均匀。同时，虽然颗粒体积分数的特征波动频率主要受轧制周期的影响，但由于轧制周期对剪切效应的影响较小，因此对颗粒分布行为的影响较小。
The effect of rolling amplitude and rolling period on particle distribution behaviors in a rolling circulating fluidized bed (RCFB) has been quantitatively clarified by means of the electrical capacitance tomography (ECT) technique. A series of experiments with a cold mode RCFB were performed while the rolling amplitude and rolling period varied fromΘ= 2.5° to 10.0° andT= 5.0 to 15.0 s, respectively. Based on the particle distribution images captured by the ECT sensor, three main characteristics of particle distribution behavior, namely the average particle volume fraction, the particle distribution stability and the particle distribution uniformity, were quantitatively estimated. As results, the particle distribution behavior in the RCFB was dominated by the shear effect, which was derived from the inertial forces and gravity in the radial direction of the riser. The positive influence of rolling amplitude on the shear effect caused augmentation of the particle volume fraction; however, particle distribution became unstable and heterogeneous. Meanwhile, although the characteristic fluctuation frequency of particle volume fraction was dominated by the rolling period, little effect of the rolling period on the particle distribution behaviors was observed due to its minimal influence on the shear effect.
登录
查看更多内容
影响因子：
4.7
作者：
A. Rees;J. Davidson;J. S. Dennis;P. Fennell;L. Gladden;A. Hayhurst;M. Mantle;C. Müller;A. Sederman
通讯作者：
A. Rees;J. Davidson;J. S. Dennis;P. Fennell;L. Gladden;A. Hayhurst;M. Mantle;C. Müller;A. Sederman
影响因子：
5.2
作者：
Yongpan Cheng;Wenbiao Zhang;G. Guan;C. Fushimi;A. Tsutsumi;Chi‐Hwa Wang
通讯作者：
Yongpan Cheng;Wenbiao Zhang;G. Guan;C. Fushimi;A. Tsutsumi;Chi‐Hwa Wang
影响因子：
4.7
作者：
J. McMillan;F. Shaffer;Balaji Gopalan;J. Chew;C. Hrenya;R. Hays;S. Karri;R. Cocco
通讯作者：
J. McMillan;F. Shaffer;Balaji Gopalan;J. Chew;C. Hrenya;R. Hays;S. Karri;R. Cocco
影响因子：
3.2
作者：
Ruiqing Zhang;Hairui Yang;Yuxin Wu;Hai Zhang;Junfu Lu
通讯作者：
Ruiqing Zhang;Hairui Yang;Yuxin Wu;Hai Zhang;Junfu Lu
影响因子：
1.7
作者：
H. Murata;Ken Sawada;Michiyuki Kobayashi
通讯作者：
H. Murata;Ken Sawada;Michiyuki Kobayashi