Evaluation of the combustion behaviour of different coals

Markku Miettinen, Martti Aho, Jaakko Saastamoinen, Juha Huotari

Research output: Book/ReportReport

1 Citation (Scopus)

Abstract

The goal of this project was to develop a methodology based on the properties of coal to predict the combustion characteristics of some coals imported to Finland. The main approach was to apply different advanced methods to analyse coal reactivity and to model the initial stages of pyrolysis and combustion. A review of developments on coal combustion behaviour prediction was also carried out. Three different coals were tested. Infrared spectroscopy and traditional fuel analysis were used to compare the structure of the coals studied. Thermogravimetry, flash pyrolysis and an entrained flow reactor were used to evaluate the reactivity of the coals. A mathematical model was developed to calculate the heating, drying, pyrolysis and combustion of a coal particle. The results of the project were promising and a methodology was proposed to evaluate the combustion characteristics of coals imported to Finland. In the first phase of the method laboratory scale tests with FT-JR, traditional and isothermal TG, DSC, and entrained flow reactor are carried out to study the reactivity, emissions and burn-out of the coal. The effects of particle size distribution are calculated with the coal pyrolysis and combustion model. Pilot plant and fullscale tests are carried out if necessary. In the second phase detailed mathematical modelling is used to compute flow and heat transfer phenomena and burn-out in the flame paths of the furnace.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages66
ISBN (Print)951-38-3254-6
Publication statusPublished - 1988
MoE publication typeD4 Published development or research report or study

Publication series

SeriesValtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports
Number567
ISSN0358-5077

Fingerprint

Coal
Pyrolysis
Coal combustion
Pilot plants
Particle size analysis
Thermogravimetric analysis
Infrared spectroscopy
Drying
Furnaces
Mathematical models
Heat transfer
Heating

Keywords

  • Fossil fuels
  • coal
  • combustion
  • characteristics
  • evaluation
  • mathematical models
  • development

Cite this

Miettinen, M., Aho, M., Saastamoinen, J., & Huotari, J. (1988). Evaluation of the combustion behaviour of different coals. Espoo: VTT Technical Research Centre of Finland. Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports, No. 567
Miettinen, Markku ; Aho, Martti ; Saastamoinen, Jaakko ; Huotari, Juha. / Evaluation of the combustion behaviour of different coals. Espoo : VTT Technical Research Centre of Finland, 1988. 66 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 567).
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Miettinen, M, Aho, M, Saastamoinen, J & Huotari, J 1988, Evaluation of the combustion behaviour of different coals. Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports, no. 567, VTT Technical Research Centre of Finland, Espoo.

Evaluation of the combustion behaviour of different coals. / Miettinen, Markku; Aho, Martti; Saastamoinen, Jaakko; Huotari, Juha.

Espoo : VTT Technical Research Centre of Finland, 1988. 66 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 567).

Research output: Book/ReportReport

TY - BOOK

T1 - Evaluation of the combustion behaviour of different coals

AU - Miettinen, Markku

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AU - Saastamoinen, Jaakko

AU - Huotari, Juha

PY - 1988

Y1 - 1988

N2 - The goal of this project was to develop a methodology based on the properties of coal to predict the combustion characteristics of some coals imported to Finland. The main approach was to apply different advanced methods to analyse coal reactivity and to model the initial stages of pyrolysis and combustion. A review of developments on coal combustion behaviour prediction was also carried out. Three different coals were tested. Infrared spectroscopy and traditional fuel analysis were used to compare the structure of the coals studied. Thermogravimetry, flash pyrolysis and an entrained flow reactor were used to evaluate the reactivity of the coals. A mathematical model was developed to calculate the heating, drying, pyrolysis and combustion of a coal particle. The results of the project were promising and a methodology was proposed to evaluate the combustion characteristics of coals imported to Finland. In the first phase of the method laboratory scale tests with FT-JR, traditional and isothermal TG, DSC, and entrained flow reactor are carried out to study the reactivity, emissions and burn-out of the coal. The effects of particle size distribution are calculated with the coal pyrolysis and combustion model. Pilot plant and fullscale tests are carried out if necessary. In the second phase detailed mathematical modelling is used to compute flow and heat transfer phenomena and burn-out in the flame paths of the furnace.

AB - The goal of this project was to develop a methodology based on the properties of coal to predict the combustion characteristics of some coals imported to Finland. The main approach was to apply different advanced methods to analyse coal reactivity and to model the initial stages of pyrolysis and combustion. A review of developments on coal combustion behaviour prediction was also carried out. Three different coals were tested. Infrared spectroscopy and traditional fuel analysis were used to compare the structure of the coals studied. Thermogravimetry, flash pyrolysis and an entrained flow reactor were used to evaluate the reactivity of the coals. A mathematical model was developed to calculate the heating, drying, pyrolysis and combustion of a coal particle. The results of the project were promising and a methodology was proposed to evaluate the combustion characteristics of coals imported to Finland. In the first phase of the method laboratory scale tests with FT-JR, traditional and isothermal TG, DSC, and entrained flow reactor are carried out to study the reactivity, emissions and burn-out of the coal. The effects of particle size distribution are calculated with the coal pyrolysis and combustion model. Pilot plant and fullscale tests are carried out if necessary. In the second phase detailed mathematical modelling is used to compute flow and heat transfer phenomena and burn-out in the flame paths of the furnace.

KW - Fossil fuels

KW - coal

KW - combustion

KW - characteristics

KW - evaluation

KW - mathematical models

KW - development

M3 - Report

SN - 951-38-3254-6

T3 - Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports

BT - Evaluation of the combustion behaviour of different coals

PB - VTT Technical Research Centre of Finland

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ER -

Miettinen M, Aho M, Saastamoinen J, Huotari J. Evaluation of the combustion behaviour of different coals. Espoo: VTT Technical Research Centre of Finland, 1988. 66 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 567).