当前位置：
X-MOL 学术
›
Ind. Eng. Chem. Res.
›
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.)
Dispersion Trajectory and Dynamics of Particles Injected from the Sidewall in the Gas–Solid Fluidized Bed
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-09-21 , DOI: 10.1021/acs.iecr.0c03631 Yong Yang 1 , Zhengliang Huang 1 , Jingyuan Sun 1 , Yao Yang 1 , Jingdai Wang 2 , Yongrong Yang 2
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-09-21 , DOI: 10.1021/acs.iecr.0c03631 Yong Yang 1 , Zhengliang Huang 1 , Jingyuan Sun 1 , Yao Yang 1 , Jingdai Wang 2 , Yongrong Yang 2
Affiliation
|
The dispersion trajectory and dynamics of particles injected from the sidewall were investigated in a pseudo-two-dimensional fluidized bed based on digital image analysis, and the effect of the injection position on the dispersion trajectory was revealed. Image analysis showed that the dispersion trajectory could be divided into two stages, including the initial dispersion stage and the bed dispersion stage, and the former one was affected by the injection position severely. As injected near the gas distributor (distributor zone), it showed the central-upward trajectory; when injected in the middle area, it was the sidewall-downward trajectory; while as injected near the bed height (splash zone), it demonstrated as the lateral-dispersion coupled sidewall-downward trajectory. As a result, the dispersion time was the smallest when injected near the gas distributor. Furthermore, the effect of the superficial gas velocity was also considered when particles were injected at different heights. When injected close to the gas distributor, the initial dispersion stage was negligible and the bed dispersion stage decreased with increasing superficial gas velocity. When injected far away from the gas distributor, duration times of both stages decreased with the superficial gas velocity increasing.
中文翻译：
气固流化床中从侧壁注入的颗粒的分散轨迹和动力学
基于数字图像分析，在伪二维流化床中研究了从侧壁注入的颗粒的分散轨迹和动力学，并揭示了注入位置对分散轨迹的影响。图像分析表明，分散轨迹可分为初始分散阶段和床分散阶段两个阶段，前一个阶段受注入位置的影响较大。当注入气体分配器（分配器区域）附近时，它显示出中心向上的轨迹。当在中间区域注入时，它是侧壁向下的轨迹；当注入接近床层高度（飞溅区）时，它表现为横向分散耦合的侧壁向下轨迹。结果是，当在气体分配器附近注入时，分散时间最小。此外，当以不同高度注射颗粒时，还考虑了表观气体速度的影响。当注入气体分配器附近时，初始分散阶段可忽略不计，床分散阶段随着表观气体速度的增加而降低。当远离气体分配器注入时，两个阶段的持续时间随着表观气体速度的增加而减少。
更新日期：2020-10-15
中文翻译：
气固流化床中从侧壁注入的颗粒的分散轨迹和动力学
基于数字图像分析，在伪二维流化床中研究了从侧壁注入的颗粒的分散轨迹和动力学，并揭示了注入位置对分散轨迹的影响。图像分析表明，分散轨迹可分为初始分散阶段和床分散阶段两个阶段，前一个阶段受注入位置的影响较大。当注入气体分配器（分配器区域）附近时，它显示出中心向上的轨迹。当在中间区域注入时，它是侧壁向下的轨迹；当注入接近床层高度（飞溅区）时，它表现为横向分散耦合的侧壁向下轨迹。结果是，当在气体分配器附近注入时，分散时间最小。此外，当以不同高度注射颗粒时，还考虑了表观气体速度的影响。当注入气体分配器附近时，初始分散阶段可忽略不计，床分散阶段随着表观气体速度的增加而降低。当远离气体分配器注入时，两个阶段的持续时间随着表观气体速度的增加而减少。
京公网安备 11010802027423号