Characterizing particle aggregates in a high-density and high-flux CFB riser

S. V. Manyele; J. H. Pärssinen; J. X. Zhu

doi:10.1016/S1385-8947(01)00299-6

Characterizing particle aggregates in a high-density and high-flux CFB riser

S. V. Manyele, J. H. Pärssinen, J. X. Zhu

Research output: Journal Publication › Article › peer-review

145 Citations (Scopus)

Abstract

Particle aggregates play an important role in the performance of circulating fluidized beds (CFBs). This paper presents a study on the aggregate properties in a high-flux and high-density riser (10m high and 76.2mm i.d.), based on the solids concentration measurements using a fiber optic probe. The gas velocities ranged from 5.5 to 10m/s and solids circulation rate between 100 and 550kg/m²s. Sensitivity analysis was first conducted to establish the optimum settings for determining cluster parameters. Aggregate properties (frequency, time fraction, existence time, average solids concentration and cluster vertical dimension) were established using transient solids concentration data, based on the results of the sensitivity analysis. These parameters revealed a strong dependence of the aggregate properties on operating conditions, local mean solids concentration, radial position and axial elevation.

Original language	English
Pages (from-to)	151-161
Number of pages	11
Journal	Chemical Engineering Journal
Volume	88
Issue number	1-3
DOIs	https://doi.org/10.1016/S1385-8947(01)00299-6
Publication status	Published - 28 Sept 2002
Externally published	Yes

Keywords

Cluster frequency
Cluster time fraction
Concentration fiber optic probe
Existence time
High-density riser

ASJC Scopus subject areas

General Chemistry
Environmental Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

Access to Document

10.1016/S1385-8947(01)00299-6

Cite this

@article{e564e40bf8cc48c3b9854d04883b4eda,

title = "Characterizing particle aggregates in a high-density and high-flux CFB riser",

abstract = "Particle aggregates play an important role in the performance of circulating fluidized beds (CFBs). This paper presents a study on the aggregate properties in a high-flux and high-density riser (10m high and 76.2mm i.d.), based on the solids concentration measurements using a fiber optic probe. The gas velocities ranged from 5.5 to 10m/s and solids circulation rate between 100 and 550kg/m2s. Sensitivity analysis was first conducted to establish the optimum settings for determining cluster parameters. Aggregate properties (frequency, time fraction, existence time, average solids concentration and cluster vertical dimension) were established using transient solids concentration data, based on the results of the sensitivity analysis. These parameters revealed a strong dependence of the aggregate properties on operating conditions, local mean solids concentration, radial position and axial elevation.",

keywords = "Cluster frequency, Cluster time fraction, Concentration fiber optic probe, Existence time, High-density riser",

author = "Manyele, {S. V.} and P{\"a}rssinen, {J. H.} and Zhu, {J. X.}",

note = "Funding Information: The authors are grateful to the NSERC for the financial support to the work presented in this paper. S.V. Manyele would also like to thank NORAD-UDSM for a scholarship to study at UWO.",

year = "2002",

month = sep,

day = "28",

doi = "10.1016/S1385-8947(01)00299-6",

language = "English",

volume = "88",

pages = "151--161",

journal = "Chemical Engineering Journal",

issn = "1385-8947",

publisher = "Elsevier",

number = "1-3",

}

TY - JOUR

T1 - Characterizing particle aggregates in a high-density and high-flux CFB riser

AU - Manyele, S. V.

AU - Pärssinen, J. H.

AU - Zhu, J. X.

N1 - Funding Information: The authors are grateful to the NSERC for the financial support to the work presented in this paper. S.V. Manyele would also like to thank NORAD-UDSM for a scholarship to study at UWO.

PY - 2002/9/28

Y1 - 2002/9/28

N2 - Particle aggregates play an important role in the performance of circulating fluidized beds (CFBs). This paper presents a study on the aggregate properties in a high-flux and high-density riser (10m high and 76.2mm i.d.), based on the solids concentration measurements using a fiber optic probe. The gas velocities ranged from 5.5 to 10m/s and solids circulation rate between 100 and 550kg/m2s. Sensitivity analysis was first conducted to establish the optimum settings for determining cluster parameters. Aggregate properties (frequency, time fraction, existence time, average solids concentration and cluster vertical dimension) were established using transient solids concentration data, based on the results of the sensitivity analysis. These parameters revealed a strong dependence of the aggregate properties on operating conditions, local mean solids concentration, radial position and axial elevation.

AB - Particle aggregates play an important role in the performance of circulating fluidized beds (CFBs). This paper presents a study on the aggregate properties in a high-flux and high-density riser (10m high and 76.2mm i.d.), based on the solids concentration measurements using a fiber optic probe. The gas velocities ranged from 5.5 to 10m/s and solids circulation rate between 100 and 550kg/m2s. Sensitivity analysis was first conducted to establish the optimum settings for determining cluster parameters. Aggregate properties (frequency, time fraction, existence time, average solids concentration and cluster vertical dimension) were established using transient solids concentration data, based on the results of the sensitivity analysis. These parameters revealed a strong dependence of the aggregate properties on operating conditions, local mean solids concentration, radial position and axial elevation.

KW - Cluster frequency

KW - Cluster time fraction

KW - Concentration fiber optic probe

KW - Existence time

KW - High-density riser

UR - http://www.scopus.com/inward/record.url?scp=0037190272&partnerID=8YFLogxK

U2 - 10.1016/S1385-8947(01)00299-6

DO - 10.1016/S1385-8947(01)00299-6

M3 - Article

AN - SCOPUS:0037190272

SN - 1385-8947

VL - 88

SP - 151

EP - 161

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

IS - 1-3

ER -

Characterizing particle aggregates in a high-density and high-flux CFB riser

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this