Experimental investigation on solid suspension performance of coaxial mixer in viscous and high solid loading systems
(2019) In Chemical Engineering Science 208.- Abstract
The coaxial mixers consisting of an inner Rushton turbine or propeller and an outer anchor were combined first with the just off-bottom suspension in viscous and high solid loading systems. In this study, a new method based on RGB brightness analysis was proposed to determine the cloud height, and the measures to promote cloud height were also discussed. In addition, the effects of rotation modes, pumping modes and solid loading on the just-suspension power were investigated. The results showed that the co-rotation coaxial mixers with an up-pumping inner impeller could achieve the just suspension at lower power consumption and were recommended. The combination of anchor and up-pumping propeller was the most energy efficient among the... (More)
The coaxial mixers consisting of an inner Rushton turbine or propeller and an outer anchor were combined first with the just off-bottom suspension in viscous and high solid loading systems. In this study, a new method based on RGB brightness analysis was proposed to determine the cloud height, and the measures to promote cloud height were also discussed. In addition, the effects of rotation modes, pumping modes and solid loading on the just-suspension power were investigated. The results showed that the co-rotation coaxial mixers with an up-pumping inner impeller could achieve the just suspension at lower power consumption and were recommended. The combination of anchor and up-pumping propeller was the most energy efficient among the investigated mixers, whereas its cloud height was relatively low. The high off-bottom clearance and the combined inner impeller could promote the cloud height with little power variation, but the enlargement of inner impeller had no obvious effect.
(Less)
- author
- Xu, Zilong ; Jin, Zhijiang ; Liu, Baoqing LU and Sundén, Bengt LU
- organization
- publishing date
- 2019
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Cloud height, Coaxial mixer, High solid loading, Solid suspension
- in
- Chemical Engineering Science
- volume
- 208
- article number
- 115144
- publisher
- Elsevier
- external identifiers
-
- scopus:85070188000
- ISSN
- 0009-2509
- DOI
- 10.1016/j.ces.2019.08.002
- language
- English
- LU publication?
- yes
- id
- 1bc4b9c5-ee5b-4a5c-96b9-e19152064730
- date added to LUP
- 2019-08-29 12:15:15
- date last changed
- 2022-04-18 17:05:42
@article{1bc4b9c5-ee5b-4a5c-96b9-e19152064730,
abstract = {{<p>The coaxial mixers consisting of an inner Rushton turbine or propeller and an outer anchor were combined first with the just off-bottom suspension in viscous and high solid loading systems. In this study, a new method based on RGB brightness analysis was proposed to determine the cloud height, and the measures to promote cloud height were also discussed. In addition, the effects of rotation modes, pumping modes and solid loading on the just-suspension power were investigated. The results showed that the co-rotation coaxial mixers with an up-pumping inner impeller could achieve the just suspension at lower power consumption and were recommended. The combination of anchor and up-pumping propeller was the most energy efficient among the investigated mixers, whereas its cloud height was relatively low. The high off-bottom clearance and the combined inner impeller could promote the cloud height with little power variation, but the enlargement of inner impeller had no obvious effect.</p>}},
author = {{Xu, Zilong and Jin, Zhijiang and Liu, Baoqing and Sundén, Bengt}},
issn = {{0009-2509}},
keywords = {{Cloud height; Coaxial mixer; High solid loading; Solid suspension}},
language = {{eng}},
publisher = {{Elsevier}},
series = {{Chemical Engineering Science}},
title = {{Experimental investigation on solid suspension performance of coaxial mixer in viscous and high solid loading systems}},
url = {{http://dx.doi.org/10.1016/j.ces.2019.08.002}},
doi = {{10.1016/j.ces.2019.08.002}},
volume = {{208}},
year = {{2019}},
}