Development and validation of a 3-dimensional CFB furnace model

A. Vepsäläinen, K. Myöhänen, T. Hyppönen, Timo Leino, Antti Tourunen

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

6 Citations (Scopus)

Abstract

At Foster Wheeler, a three-dimensional CFB furnace model is essential part of knowledge development of CFB furnace process regarding solid mixing, combustion, emission formation and heat transfer. Results of laboratory and pilot scale phenomenon research are utilized in development of sub-models. Analyses of field-test results in industrial-scale CFB boilers including furnace profile measurements are simultaneously carried out with development of 3-dimensional process modeling, which provides a chain of knowledge that is utilized as feedback for phenomenon research. Knowledge gathered by model validation studies and up-to-date parameter databases are utilized in performance prediction and design development of CFB boiler furnaces. This paper reports recent development steps related to modeling of combustion and formation of char and volatiles of various fuel types in CFB conditions. Also a new model for predicting the formation of nitrogen oxides is presented. Validation of mixing and combustion parameters for solids and gases are based on test balances at several large-scale CFB boilers combusting coal, peat and bio-fuels. Field-tests including lateral and vertical furnace profile measurements and characterization of solid materials provides a window for characterization of fuel specific mixing and combustion behavior in CFB furnace at different loads and operation conditions. Measured horizontal gas profiles are projection of balance between fuel mixing and reactions at lower part of furnace and are used together with both lateral temperature profiles at bed and upper parts of furnace for determination of solid mixing and combustion model parameters. Modeling of char and volatile based formation of NO profiles is followed by analysis of oxidizing and reducing regions formed due lower furnace design and mixing characteristics of fuel and combustion airs effecting to formation of NO furnace profile by reduction and volatile-nitrogen reactions. This paper presents CFB process analysis focused on combustion and NO profiles in pilot and industrial scale bituminous coal combustion.
Original languageEnglish
Title of host publicationProceedings of the 20th International Conference on Fluidized Bed Combustion
Place of PublicationBeijing
PublisherSpringer
Pages757-763
ISBN (Electronic)978-3-642-02682-9
ISBN (Print)978-3-642-02681-2
DOIs
Publication statusPublished - 2009
MoE publication typeA4 Article in a conference publication
Event20th International Conference on Fluidized Bed Combustion - Xi'an, China
Duration: 18 May 200921 May 2009

Conference

Conference20th International Conference on Fluidized Bed Combustion
CountryChina
CityXi'an
Period18/05/0921/05/09

Fingerprint

Furnaces
Boilers
Peat
Coal combustion
Bituminous coal
Nitrogen oxides
Gases
Coal
Heat transfer
Nitrogen
Feedback
Air

Keywords

  • 3-dimensional CFB model
  • Combustion
  • Furnace profiles
  • Nox model

Cite this

Vepsäläinen, A., Myöhänen, K., Hyppönen, T., Leino, T., & Tourunen, A. (2009). Development and validation of a 3-dimensional CFB furnace model. In Proceedings of the 20th International Conference on Fluidized Bed Combustion (pp. 757-763). Beijing: Springer. https://doi.org/10.1007/978-3-642-02682-9_116
Vepsäläinen, A. ; Myöhänen, K. ; Hyppönen, T. ; Leino, Timo ; Tourunen, Antti. / Development and validation of a 3-dimensional CFB furnace model. Proceedings of the 20th International Conference on Fluidized Bed Combustion. Beijing : Springer, 2009. pp. 757-763
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Vepsäläinen, A, Myöhänen, K, Hyppönen, T, Leino, T & Tourunen, A 2009, Development and validation of a 3-dimensional CFB furnace model. in Proceedings of the 20th International Conference on Fluidized Bed Combustion. Springer, Beijing, pp. 757-763, 20th International Conference on Fluidized Bed Combustion, Xi'an, China, 18/05/09. https://doi.org/10.1007/978-3-642-02682-9_116

Development and validation of a 3-dimensional CFB furnace model. / Vepsäläinen, A.; Myöhänen, K.; Hyppönen, T.; Leino, Timo; Tourunen, Antti.

Proceedings of the 20th International Conference on Fluidized Bed Combustion. Beijing : Springer, 2009. p. 757-763.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

TY - GEN

T1 - Development and validation of a 3-dimensional CFB furnace model

AU - Vepsäläinen, A.

AU - Myöhänen, K.

AU - Hyppönen, T.

AU - Leino, Timo

AU - Tourunen, Antti

PY - 2009

Y1 - 2009

N2 - At Foster Wheeler, a three-dimensional CFB furnace model is essential part of knowledge development of CFB furnace process regarding solid mixing, combustion, emission formation and heat transfer. Results of laboratory and pilot scale phenomenon research are utilized in development of sub-models. Analyses of field-test results in industrial-scale CFB boilers including furnace profile measurements are simultaneously carried out with development of 3-dimensional process modeling, which provides a chain of knowledge that is utilized as feedback for phenomenon research. Knowledge gathered by model validation studies and up-to-date parameter databases are utilized in performance prediction and design development of CFB boiler furnaces. This paper reports recent development steps related to modeling of combustion and formation of char and volatiles of various fuel types in CFB conditions. Also a new model for predicting the formation of nitrogen oxides is presented. Validation of mixing and combustion parameters for solids and gases are based on test balances at several large-scale CFB boilers combusting coal, peat and bio-fuels. Field-tests including lateral and vertical furnace profile measurements and characterization of solid materials provides a window for characterization of fuel specific mixing and combustion behavior in CFB furnace at different loads and operation conditions. Measured horizontal gas profiles are projection of balance between fuel mixing and reactions at lower part of furnace and are used together with both lateral temperature profiles at bed and upper parts of furnace for determination of solid mixing and combustion model parameters. Modeling of char and volatile based formation of NO profiles is followed by analysis of oxidizing and reducing regions formed due lower furnace design and mixing characteristics of fuel and combustion airs effecting to formation of NO furnace profile by reduction and volatile-nitrogen reactions. This paper presents CFB process analysis focused on combustion and NO profiles in pilot and industrial scale bituminous coal combustion.

AB - At Foster Wheeler, a three-dimensional CFB furnace model is essential part of knowledge development of CFB furnace process regarding solid mixing, combustion, emission formation and heat transfer. Results of laboratory and pilot scale phenomenon research are utilized in development of sub-models. Analyses of field-test results in industrial-scale CFB boilers including furnace profile measurements are simultaneously carried out with development of 3-dimensional process modeling, which provides a chain of knowledge that is utilized as feedback for phenomenon research. Knowledge gathered by model validation studies and up-to-date parameter databases are utilized in performance prediction and design development of CFB boiler furnaces. This paper reports recent development steps related to modeling of combustion and formation of char and volatiles of various fuel types in CFB conditions. Also a new model for predicting the formation of nitrogen oxides is presented. Validation of mixing and combustion parameters for solids and gases are based on test balances at several large-scale CFB boilers combusting coal, peat and bio-fuels. Field-tests including lateral and vertical furnace profile measurements and characterization of solid materials provides a window for characterization of fuel specific mixing and combustion behavior in CFB furnace at different loads and operation conditions. Measured horizontal gas profiles are projection of balance between fuel mixing and reactions at lower part of furnace and are used together with both lateral temperature profiles at bed and upper parts of furnace for determination of solid mixing and combustion model parameters. Modeling of char and volatile based formation of NO profiles is followed by analysis of oxidizing and reducing regions formed due lower furnace design and mixing characteristics of fuel and combustion airs effecting to formation of NO furnace profile by reduction and volatile-nitrogen reactions. This paper presents CFB process analysis focused on combustion and NO profiles in pilot and industrial scale bituminous coal combustion.

KW - 3-dimensional CFB model

KW - Combustion

KW - Furnace profiles

KW - Nox model

U2 - 10.1007/978-3-642-02682-9_116

DO - 10.1007/978-3-642-02682-9_116

M3 - Conference article in proceedings

SN - 978-3-642-02681-2

SP - 757

EP - 763

BT - Proceedings of the 20th International Conference on Fluidized Bed Combustion

PB - Springer

CY - Beijing

ER -

Vepsäläinen A, Myöhänen K, Hyppönen T, Leino T, Tourunen A. Development and validation of a 3-dimensional CFB furnace model. In Proceedings of the 20th International Conference on Fluidized Bed Combustion. Beijing: Springer. 2009. p. 757-763 https://doi.org/10.1007/978-3-642-02682-9_116