Effect of Nozzle Blockage on Circulation Flow Rate in Up-Snorkel during the RH Degasser Process

Bohong Zhu; Qingcai Liu; Dong Zhao; Shan Ren; Minren Xu; Baocheng Yang; Bing Hu

doi:10.1002/srin.201400524

Effect of Nozzle Blockage on Circulation Flow Rate in Up-Snorkel during the RH Degasser Process

Bohong Zhu
, Qingcai Liu
, Dong Zhao
, Shan Ren
, Minren Xu
, Baocheng Yang
, Bing Hu

Chongqing University
Jiangsu University of Science and Technology
Design Institute of Chongqing Iron and Steel Group
Chongqing Iron and Steel Group

Research output: Contribution to journal › Article › peer-review

39 Scopus citations

Abstract

Based on the double-flow model, a three-dimensional mathematical model of multiphase flow in RH system has been developed to predict the flow field and gas holdup distribution. Also, the circulation flow rate was measured with the water model. The results show that the nozzle blockage layers have small influence on circulation flow rate, while the effect of the blockage modalities and numbers is significant. Under the interaction of blockage modalities and numbers, the gas holdup distribution is the key factor to determine the circulation flow rate. Symmetrical blockage is an acceptable modality under the condition of a small amount of blockage, but the effect of non-symmetrical blockage on circulation flow rate is more obvious. If the blockage number is more than 3, the up-snorkel must be promptly treated or replaced.

Original language	English
Pages (from-to)	136-145
Number of pages	10
Journal	Steel Research International
Volume	87
Issue number	2
DOIs	https://doi.org/10.1002/srin.201400524
State	Published - 1 Feb 2016
Externally published	Yes

Keywords

RH degasser
circulation flow rate
modeling
nozzle blockage

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10.1002/srin.201400524

Cite this

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title = "Effect of Nozzle Blockage on Circulation Flow Rate in Up-Snorkel during the RH Degasser Process",

abstract = "Based on the double-flow model, a three-dimensional mathematical model of multiphase flow in RH system has been developed to predict the flow field and gas holdup distribution. Also, the circulation flow rate was measured with the water model. The results show that the nozzle blockage layers have small influence on circulation flow rate, while the effect of the blockage modalities and numbers is significant. Under the interaction of blockage modalities and numbers, the gas holdup distribution is the key factor to determine the circulation flow rate. Symmetrical blockage is an acceptable modality under the condition of a small amount of blockage, but the effect of non-symmetrical blockage on circulation flow rate is more obvious. If the blockage number is more than 3, the up-snorkel must be promptly treated or replaced.",

keywords = "RH degasser, circulation flow rate, modeling, nozzle blockage",

author = "Bohong Zhu and Qingcai Liu and Dong Zhao and Shan Ren and Minren Xu and Baocheng Yang and Bing Hu",

note = "Publisher Copyright: {\textcopyright} 2015 WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim.",

year = "2016",

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doi = "10.1002/srin.201400524",

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journal = "Steel Research International",

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}

TY - JOUR

T1 - Effect of Nozzle Blockage on Circulation Flow Rate in Up-Snorkel during the RH Degasser Process

AU - Zhu, Bohong

AU - Liu, Qingcai

AU - Zhao, Dong

AU - Ren, Shan

AU - Xu, Minren

AU - Yang, Baocheng

AU - Hu, Bing

PY - 2016/2/1

Y1 - 2016/2/1

N2 - Based on the double-flow model, a three-dimensional mathematical model of multiphase flow in RH system has been developed to predict the flow field and gas holdup distribution. Also, the circulation flow rate was measured with the water model. The results show that the nozzle blockage layers have small influence on circulation flow rate, while the effect of the blockage modalities and numbers is significant. Under the interaction of blockage modalities and numbers, the gas holdup distribution is the key factor to determine the circulation flow rate. Symmetrical blockage is an acceptable modality under the condition of a small amount of blockage, but the effect of non-symmetrical blockage on circulation flow rate is more obvious. If the blockage number is more than 3, the up-snorkel must be promptly treated or replaced.

AB - Based on the double-flow model, a three-dimensional mathematical model of multiphase flow in RH system has been developed to predict the flow field and gas holdup distribution. Also, the circulation flow rate was measured with the water model. The results show that the nozzle blockage layers have small influence on circulation flow rate, while the effect of the blockage modalities and numbers is significant. Under the interaction of blockage modalities and numbers, the gas holdup distribution is the key factor to determine the circulation flow rate. Symmetrical blockage is an acceptable modality under the condition of a small amount of blockage, but the effect of non-symmetrical blockage on circulation flow rate is more obvious. If the blockage number is more than 3, the up-snorkel must be promptly treated or replaced.

KW - RH degasser

KW - circulation flow rate

KW - modeling

KW - nozzle blockage

UR - https://www.scopus.com/pages/publications/84956963550

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DO - 10.1002/srin.201400524

M3 - 文章

AN - SCOPUS:84956963550

SN - 1611-3683

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EP - 145

JO - Steel Research International

JF - Steel Research International

IS - 2

ER -

Effect of Nozzle Blockage on Circulation Flow Rate in Up-Snorkel during the RH Degasser Process

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Keywords

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