Characterization of dynamic behavior in the liquid spray zone of a bottom-spouted fluidized bed

Sun Chengbin; Wang Meng; Zhan Dekang; Guo Tuo; Wu Mingzhou; Wu Man; Guo Qingjie

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Characterization of dynamic behavior in the liquid spray zone of a bottom-spouted fluidized bed

Updated：2026-09-17

- Characterization of dynamic behavior in the liquid spray zone of a bottom-spouted fluidized bed
- Chinese Journal of Chemical Engineering Vol. 95, Issue 7, Pages: 194-206(2026)
- Affiliations：
  
  Laboratory of Green & Smart Chemical Engineering in Universities of Shandong, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
  Center of Carbon Capture and Industrial Utilization, Jiangmen Laboratory of Carbon Science and Technology, Jiangmen 529020, China
  College of Health Science and Environmental Engineering, Shenzhen Technology University, Shenzhen 518118, China
- Author bio：
  
  Corresponding authors. E-mail addresses:wumanok@126.com(M. Wu),qingjie_guo@vip.sina.com(Q. Guo).
  * Corresponding authors. E-mail addresses:wumanok@126.com(M. Wu)
  * Corresponding authors. E-mail addresses:qingjie_guo@vip.sina.com(Q. Guo).
- Funds：
- DOI：
  CLC：
- Received：06 November 2025，
  
  Revised：2026-01-20，
  
  Accepted：21 January 2026，
  
  Online First：16 April 2026，
  
  Published：2026-07
- Accepted：
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Sun Chengbin, Wang Meng, Zhan Dekang, et al. Characterization of dynamic behavior in the liquid spray zone of a bottom-spouted fluidized bed[J]. Chinese Journal of Chemical Engineering, 2026, 95(7): 194-206.
DOI：

Sun Chengbin, Wang Meng, Zhan Dekang, et al. Characterization of dynamic behavior in the liquid spray zone of a bottom-spouted fluidized bed[J]. Chinese Journal of Chemical Engineering, 2026, 95(7): 194-206. DOI：

摘要

Abstract

The dynamic behavior and particle shape effects in the liquid spray zone were investigated through temperature standard deviation

liquid—solid contact efficiency

and electrical conductivity signals. Results indicate that temperature standard deviation increases with proximity to the nozzle. Elevated atomisation gas velocity (

) reduces droplet diameter and improves their dispersion

which leads to a more uniform temperature distribution and a resulting decrease in standard deviation. The temperature standard deviation is decreased and then increased with the increasing of fluidized gas velocity (

). Non-spherical particles had a higher temperature standard deviation than spherical particles. This resulted from particle agglomeration

where lower sphericity led to stronger fluctuations. The liquid—solid contact efficiency is enhanced with the increasing of spouted gas velocity (

)

and

all. As the liquid spouted rate (

) increased

the liquid—solid contact efficiency

determined by particle capture of droplets

first rose and then declined. Non-spherical particles exhibit higher liquid—solid contact efficiency than that of spherical particles due to longer residence times

and larger contact areas with droplets. Droplet fluctuations are intense near the nozzle

resulting in high electrical conductivity signal intensity. Increased

enhances airflow effects

causing frequent voltage signal fluctuations. Flake-like particles accumulate more droplets due to agglomeration

enabling droplets to reach higher bed positions. These studies provide promising research directions for the development of adsorbent pelletization in CO

capture.

关键词

Keywords

references

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