Particle filtration characteristics of typical packing granular filters used in hot gas clean-up

Fei Long Wang; Ya Ling He; Song Zhen Tang; Francis A. Kulacki; Yu Bing Tao

doi:10.1016/j.fuel.2018.06.095

Particle filtration characteristics of typical packing granular filters used in hot gas clean-up

Fei Long Wang, Ya Ling He, Song Zhen Tang, Francis A. Kulacki, Yu Bing Tao

Mechanical Engineering

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

29 Scopus citations

Abstract

Granular filter is a promising method in hot gas clean-up for advanced coal gasification technologies. Numerical simulations were performed in this paper for the particle filtration characteristics of granular filters with two typical packings: body centered cubic (BCC) and face centered cubic (FCC) packings. Fluid flow characteristics were investigated and pressure drop correlations for the two granular packings were obtained. The pressure drop of both packings increases linearly with the increase of velocity, and the pressure drop of the FCC packing is significantly higher than that of BCC. The discrete phase model (DPM) was employed to trace fly ash particle motion during the filtration process, and particle deposition characteristics on the granular surface, including the particle penetration, deposition distribution of different particle sizes, and deposition distribution along filter layers were determined. The deposition fraction of particles on each layer of granules decreases with the increase of row number, and the maximum deposition location is different for BCC and FCC packings. Large particles mainly deposit on the first four layers of granules, while small particles deposit over all layers. The collection efficiency of BCC and FCC packings increases with the increase of velocity, and they decrease first and then increase with particle diameter. Correlations of collection efficiency for the two granular packings are presented and they have good prediction accuracy.

Original language	English (US)
Pages (from-to)	9-19
Number of pages	11
Journal	Fuel
Volume	234
DOIs	https://doi.org/10.1016/j.fuel.2018.06.095
State	Published - Dec 15 2018

Bibliographical note

Funding Information:
The present work is supported by the National Key R&D Program of China (2016YFB0601100).

Funding Information:
The authors would also like to thank the Foundation for Innovative Research Groups of the Natural Science Foundation of China (No.51721004), the 111 Project (B16038), the University of Minnesota Supercomputing Institute for Advanced Computational Research, and the China Scholarship Council (award to Fei-Long Wang for one year’s study abroad at the University of Minnesota).

Publisher Copyright:
© 2018 Elsevier Ltd

Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.

Keywords

Collection efficiency
Filtration characteristic
Granular filter
Hot gas clean-up
Typical packings

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10.1016/j.fuel.2018.06.095

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title = "Particle filtration characteristics of typical packing granular filters used in hot gas clean-up",

abstract = "Granular filter is a promising method in hot gas clean-up for advanced coal gasification technologies. Numerical simulations were performed in this paper for the particle filtration characteristics of granular filters with two typical packings: body centered cubic (BCC) and face centered cubic (FCC) packings. Fluid flow characteristics were investigated and pressure drop correlations for the two granular packings were obtained. The pressure drop of both packings increases linearly with the increase of velocity, and the pressure drop of the FCC packing is significantly higher than that of BCC. The discrete phase model (DPM) was employed to trace fly ash particle motion during the filtration process, and particle deposition characteristics on the granular surface, including the particle penetration, deposition distribution of different particle sizes, and deposition distribution along filter layers were determined. The deposition fraction of particles on each layer of granules decreases with the increase of row number, and the maximum deposition location is different for BCC and FCC packings. Large particles mainly deposit on the first four layers of granules, while small particles deposit over all layers. The collection efficiency of BCC and FCC packings increases with the increase of velocity, and they decrease first and then increase with particle diameter. Correlations of collection efficiency for the two granular packings are presented and they have good prediction accuracy.",

keywords = "Collection efficiency, Filtration characteristic, Granular filter, Hot gas clean-up, Typical packings",

author = "Wang, {Fei Long} and He, {Ya Ling} and Tang, {Song Zhen} and Kulacki, {Francis A.} and Tao, {Yu Bing}",

note = "Funding Information: The present work is supported by the National Key R&D Program of China (2016YFB0601100). Funding Information: The authors would also like to thank the Foundation for Innovative Research Groups of the Natural Science Foundation of China (No.51721004), the 111 Project (B16038), the University of Minnesota Supercomputing Institute for Advanced Computational Research, and the China Scholarship Council (award to Fei-Long Wang for one year{\textquoteright}s study abroad at the University of Minnesota). Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd Copyright: Copyright 2018 Elsevier B.V., All rights reserved.",

year = "2018",

month = dec,

day = "15",

doi = "10.1016/j.fuel.2018.06.095",

language = "English (US)",

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AU - Wang, Fei Long

AU - He, Ya Ling

AU - Tang, Song Zhen

AU - Kulacki, Francis A.

AU - Tao, Yu Bing

N1 - Funding Information: The present work is supported by the National Key R&D Program of China (2016YFB0601100). Funding Information: The authors would also like to thank the Foundation for Innovative Research Groups of the Natural Science Foundation of China (No.51721004), the 111 Project (B16038), the University of Minnesota Supercomputing Institute for Advanced Computational Research, and the China Scholarship Council (award to Fei-Long Wang for one year’s study abroad at the University of Minnesota). Publisher Copyright: © 2018 Elsevier Ltd Copyright: Copyright 2018 Elsevier B.V., All rights reserved.

PY - 2018/12/15

Y1 - 2018/12/15

N2 - Granular filter is a promising method in hot gas clean-up for advanced coal gasification technologies. Numerical simulations were performed in this paper for the particle filtration characteristics of granular filters with two typical packings: body centered cubic (BCC) and face centered cubic (FCC) packings. Fluid flow characteristics were investigated and pressure drop correlations for the two granular packings were obtained. The pressure drop of both packings increases linearly with the increase of velocity, and the pressure drop of the FCC packing is significantly higher than that of BCC. The discrete phase model (DPM) was employed to trace fly ash particle motion during the filtration process, and particle deposition characteristics on the granular surface, including the particle penetration, deposition distribution of different particle sizes, and deposition distribution along filter layers were determined. The deposition fraction of particles on each layer of granules decreases with the increase of row number, and the maximum deposition location is different for BCC and FCC packings. Large particles mainly deposit on the first four layers of granules, while small particles deposit over all layers. The collection efficiency of BCC and FCC packings increases with the increase of velocity, and they decrease first and then increase with particle diameter. Correlations of collection efficiency for the two granular packings are presented and they have good prediction accuracy.

AB - Granular filter is a promising method in hot gas clean-up for advanced coal gasification technologies. Numerical simulations were performed in this paper for the particle filtration characteristics of granular filters with two typical packings: body centered cubic (BCC) and face centered cubic (FCC) packings. Fluid flow characteristics were investigated and pressure drop correlations for the two granular packings were obtained. The pressure drop of both packings increases linearly with the increase of velocity, and the pressure drop of the FCC packing is significantly higher than that of BCC. The discrete phase model (DPM) was employed to trace fly ash particle motion during the filtration process, and particle deposition characteristics on the granular surface, including the particle penetration, deposition distribution of different particle sizes, and deposition distribution along filter layers were determined. The deposition fraction of particles on each layer of granules decreases with the increase of row number, and the maximum deposition location is different for BCC and FCC packings. Large particles mainly deposit on the first four layers of granules, while small particles deposit over all layers. The collection efficiency of BCC and FCC packings increases with the increase of velocity, and they decrease first and then increase with particle diameter. Correlations of collection efficiency for the two granular packings are presented and they have good prediction accuracy.

KW - Collection efficiency

KW - Filtration characteristic

KW - Granular filter

KW - Hot gas clean-up

KW - Typical packings

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JO - Fuel

JF - Fuel

ER -

Particle filtration characteristics of typical packing granular filters used in hot gas clean-up

Abstract

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Keywords

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