The motion mechanism and characteristic of bubble in a pseudo-2D tapered fluidized bed

Wenjuan Bai; Dianming Chu; Kuanxin Tang; Lei Geng; Yan Li; Yan He

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The motion mechanism and characteristic of bubble in a pseudo-2D tapered fluidized bed

Updated：2026-01-06

- The motion mechanism and characteristic of bubble in a pseudo-2D tapered fluidized bed
- The motion mechanism and characteristic of bubble in a pseudo-2D tapered fluidized bed
- 中国化学工程学报（英文版） 2022年46卷第6期页码：255-270
- Affiliations：
  
  1. Shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-Materials, College of Electromechanical Engineering, Qingdao University of Science and Technology,Shandong,China,266061
  2. ShangDong Dazhan Nano Materials Co., Ltd,Shandong,China,256220
- Author bio：
- Funds：
- DOI：
  中图分类号：
- 纸质出版：2022
- Accepted：
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Wenjuan Bai, Dianming Chu, Kuanxin Tang, 等. The motion mechanism and characteristic of bubble in a pseudo-2D tapered fluidized bed[J]. 中国化学工程学报（英文版）, 2022,46(6):255-270.

Wenjuan Bai, Dianming Chu, Kuanxin Tang, Lei Geng, Yan Li, Yan He. The motion mechanism and characteristic of bubble in a pseudo-2D tapered fluidized bed[J]. Chinese Journal of Chemical Engineering, 2022, 46(6): 255-270.
Wenjuan Bai, Dianming Chu, Kuanxin Tang, 等. The motion mechanism and characteristic of bubble in a pseudo-2D tapered fluidized bed[J]. 中国化学工程学报（英文版）, 2022,46(6):255-270. DOI：

Wenjuan Bai, Dianming Chu, Kuanxin Tang, Lei Geng, Yan Li, Yan He. The motion mechanism and characteristic of bubble in a pseudo-2D tapered fluidized bed[J]. Chinese Journal of Chemical Engineering, 2022, 46(6): 255-270. DOI：

摘要

Abstract

The different carbon nanotube (CNT) particles (

A and

V) were bed materials in the pseudo-2D tapered fluidized bed (TFB) with/without a distributor. A detailed investigation of the motion mechanism of bubbles was carried out. The high-speed photography and image analysis techniques were used to study bubble characteristic and mixing behavior in the tapered angle of TFB without a distributor. The fractal analysis method was used to analyze the degree of particles movement. Results showed that an S-shaped motion trajectory of bubbles was captured in the bed of

V particles. The population of observational bubbles in the bed of

V particles was more than that of

A particles

and the bubble size was smaller in the bed of

V particles than that of

A particles. The motion mechanism of bubbles had been shown to be related to bed materials and initial bed height in terms of analysis and comparison of bubble diameter

bubble aspect ratio and bubble shape factor. Importantly

compared to the TFB with a distributor

the TFB without a distributor had been proved to be beneficial to the CNT fluidization according to the study of bubble characteristic and the degree of the particle movement. Additionally

it was found that the mixing behavior of

V particles was better than

A particles in the tapered angle of TFB without a distributor.

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