High solids firing in an operating recovery boiler - comparison of CFD predictions to practical observations in the furnace

Esa Vakkilainen; Lars Kjäldman; Veikko Taivassalo; Pia Kilpinen; Tommy Norström

High solids firing in an operating recovery boiler - comparison of CFD predictions to practical observations in the furnace

Esa Vakkilainen, Lars Kjäldman, Veikko Taivassalo, Pia Kilpinen, Tommy Norström

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific

Abstract

Three-dimensional flow simulation was applied to analyze the high solids firing processes in a 3 150 tds/d recovery boiler. The flow field, combustion, heat transfer, and the concentration of nitric oxide (NO) were modeled with the commercial Fluent/UNS code using strong local refinement of the computational grid. For prediction of nitric oxide (NO) emissions a postprocessing technique was used. Different simplified ammonia oxidation mechanisms available were tested. The study shows that this kind of modeling can be successfully applied to a 3 150 tds/d recovery boiler. In addition, the possibilities to reduce the NOx emission by odorous gas firing (reburning) in the recovery boiler furnace are discussed based on one-dimensional calculations.

Original language	English
Title of host publication	1998 International Chemical Recovery Conference
Place of Publication	Atlanta
Publisher	TAPPI Press
Pages	245-256
ISBN (Print)	978-0-89852-716-2
Publication status	Published - 1998
MoE publication type	B3 Non-refereed article in conference proceedings
Event	1998 TAPPI International Chemical Recovery Conference - Tampa, United States Duration: 1 Jun 1998 → 4 Jun 1998

Conference

Conference	1998 TAPPI International Chemical Recovery Conference
Country/Territory	United States
City	Tampa
Period	1/06/98 → 4/06/98

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https://imisrise.tappi.org/TAPPI/Products/ICR/ICR98245.aspx

Cite this

@inproceedings{a3a998a5127b4d358acf436290188b97,

title = "High solids firing in an operating recovery boiler - comparison of CFD predictions to practical observations in the furnace",

abstract = "Three-dimensional flow simulation was applied to analyze the high solids firing processes in a 3 150 tds/d recovery boiler. The flow field, combustion, heat transfer, and the concentration of nitric oxide (NO) were modeled with the commercial Fluent/UNS code using strong local refinement of the computational grid. For prediction of nitric oxide (NO) emissions a postprocessing technique was used. Different simplified ammonia oxidation mechanisms available were tested. The study shows that this kind of modeling can be successfully applied to a 3 150 tds/d recovery boiler. In addition, the possibilities to reduce the NOx emission by odorous gas firing (reburning) in the recovery boiler furnace are discussed based on one-dimensional calculations.",

author = "Esa Vakkilainen and Lars Kj{\"a}ldman and Veikko Taivassalo and Pia Kilpinen and Tommy Norstr{\"o}m",

year = "1998",

language = "English",

isbn = "978-0-89852-716-2",

pages = "245--256",

booktitle = "1998 International Chemical Recovery Conference",

publisher = "TAPPI Press",

address = "United States",

note = "1998 TAPPI International Chemical Recovery Conference ; Conference date: 01-06-1998 Through 04-06-1998",

}

Vakkilainen, E, Kjäldman, L, Taivassalo, V, Kilpinen, P & Norström, T 1998, High solids firing in an operating recovery boiler - comparison of CFD predictions to practical observations in the furnace. in 1998 International Chemical Recovery Conference. TAPPI Press, Atlanta, pp. 245-256, 1998 TAPPI International Chemical Recovery Conference, Tampa, Florida, United States, 1/06/98. <https://imisrise.tappi.org/TAPPI/Products/ICR/ICR98245.aspx>

High solids firing in an operating recovery boiler - comparison of CFD predictions to practical observations in the furnace. / Vakkilainen, Esa; Kjäldman, Lars; Taivassalo, Veikko et al.
1998 International Chemical Recovery Conference. Atlanta: TAPPI Press, 1998. p. 245-256.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific

TY - GEN

T1 - High solids firing in an operating recovery boiler - comparison of CFD predictions to practical observations in the furnace

AU - Vakkilainen, Esa

AU - Kjäldman, Lars

AU - Taivassalo, Veikko

AU - Kilpinen, Pia

AU - Norström, Tommy

PY - 1998

Y1 - 1998

N2 - Three-dimensional flow simulation was applied to analyze the high solids firing processes in a 3 150 tds/d recovery boiler. The flow field, combustion, heat transfer, and the concentration of nitric oxide (NO) were modeled with the commercial Fluent/UNS code using strong local refinement of the computational grid. For prediction of nitric oxide (NO) emissions a postprocessing technique was used. Different simplified ammonia oxidation mechanisms available were tested. The study shows that this kind of modeling can be successfully applied to a 3 150 tds/d recovery boiler. In addition, the possibilities to reduce the NOx emission by odorous gas firing (reburning) in the recovery boiler furnace are discussed based on one-dimensional calculations.

AB - Three-dimensional flow simulation was applied to analyze the high solids firing processes in a 3 150 tds/d recovery boiler. The flow field, combustion, heat transfer, and the concentration of nitric oxide (NO) were modeled with the commercial Fluent/UNS code using strong local refinement of the computational grid. For prediction of nitric oxide (NO) emissions a postprocessing technique was used. Different simplified ammonia oxidation mechanisms available were tested. The study shows that this kind of modeling can be successfully applied to a 3 150 tds/d recovery boiler. In addition, the possibilities to reduce the NOx emission by odorous gas firing (reburning) in the recovery boiler furnace are discussed based on one-dimensional calculations.

M3 - Conference article in proceedings

SN - 978-0-89852-716-2

SP - 245

EP - 256

BT - 1998 International Chemical Recovery Conference

PB - TAPPI Press

CY - Atlanta

T2 - 1998 TAPPI International Chemical Recovery Conference

Y2 - 1 June 1998 through 4 June 1998

ER -

High solids firing in an operating recovery boiler - comparison of CFD predictions to practical observations in the furnace

Abstract

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