Influences of top clearance and liquid throughput on the performances of an external loop airlift slurry reactor integrated mixing and separation

Hongyan Liu; Zhuo Li; Shujun Geng; Fei Gao; Taobo He; Qingshan Huang

doi:10.1016/j.cjche.2020.03.027

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Influences of top clearance and liquid throughput on the performances of an external loop airlift slurry reactor integrated mixing and separation

Fluid Dynamics and Transport Phenomena | Updated：2026-01-06

- Influences of top clearance and liquid throughput on the performances of an external loop airlift slurry reactor integrated mixing and separation
- Influences of top clearance and liquid throughput on the performances of an external loop airlift slurry reactor integrated mixing and separation
- 中国化学工程学报（英文版） 2020年第6期页码：1514-1521
- Affiliations：
  
  1. School of Chemical Engineering and Technology, Hebei University of Technology,Tianjin,China,300130
  2. Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology(QIBEBT), Chinese Academy of Sciences(CAS),Qingdao,China,266101
  3. Dalian National Laboratory for Clean Energy(DNL),Dalian,China,116023
  4. Petrochemical Research Institute, China National Petroleum Corporation(CNPC),Beijing,China,100083
- Author bio：
- Funds：
  
  This work was supported by the National Natural Science Foundation of China (Nos. 21808234;21878318), the DNL Cooperation Fund, CAS(DNL201902), "Transformational Technologies for Clean Energy and Demonstration", Strategic Priority Research Program of the CAS(-XDA21060400), QIBEBT and Dalian National Laboratory for Clean Energy of the CAS(QIBEBT ZZBS201803;QIBEBT I201907), CAS Key Technology Talent Program, and Project of CNPC-DICP Joint Research Center.
- DOI：10.1016/j.cjche.2020.03.027
  中图分类号：
- 纸质出版：2020
- Accepted：
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Hongyan Liu, Zhuo Li, Shujun Geng, 等. Influences of top clearance and liquid throughput on the performances of an external loop airlift slurry reactor integrated mixing and separation[J]. 中国化学工程学报（英文版）, 2020,(6):1514-1521.

Hongyan Liu, Zhuo Li, Shujun Geng, et al. Influences of top clearance and liquid throughput on the performances of an external loop airlift slurry reactor integrated mixing and separation[J]. Chinese Journal of Chemical Engineering, 2020, (6): 1514-1521.
Hongyan Liu, Zhuo Li, Shujun Geng, 等. Influences of top clearance and liquid throughput on the performances of an external loop airlift slurry reactor integrated mixing and separation[J]. 中国化学工程学报（英文版）, 2020,(6):1514-1521. DOI： 10.1016/j.cjche.2020.03.027.

Hongyan Liu, Zhuo Li, Shujun Geng, et al. Influences of top clearance and liquid throughput on the performances of an external loop airlift slurry reactor integrated mixing and separation[J]. Chinese Journal of Chemical Engineering, 2020, (6): 1514-1521. DOI： 10.1016/j.cjche.2020.03.027.

摘要

Abstract

A new developed external loop airlift slurry reactor

which was integrated with gas-liquid-solid three-phase mixing

mass transfer

and liquid-solid separation simultaneously

was deemed to be a promising slurry reactor due to its prominent advantages such as achieving continuous separation of clear liquid from slurry and cyclic utilization of solid particles without any extra energy

energy-saving

and intrinsic safety design. The principal operating parameters

including gas separator volume

handling capacity

and superficial gas velocity

are systematically investigated here to promote the capabilities of mixing

mass transfer

and yield in the pilot external loop airlift slurry reactor. The influences of top clearance and throughput of the clear liquid on flow regime and gas holdup in the riser

liquid circulating velocity

and volumetric mass transfer coefficient with a typical high solid holdup and free of particles are examined experimentally. It was found that increasing the gas separator volume could promote the liquid circulating velocity by about 14.0% at most. Increasing the handling capacity of the clear liquid from 0.9 m

·h

-1

to 3.0 m

·h

-1

not only could increase the output without any adverse consequences

but also could enhance the liquid circulating velocity as much as 97.3%. Typical operating conditions investigated here can provide some necessary data and guidelines for this new external loop airlift slurry reactor to upgrade its performances.

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