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Influence of process parameters on coal combustion performance. Review, experiments and engineering modeling

Abstract

The objective of this study is to improve the understanding of nitrogen oxide formation and carbon burnout during the combustion of pulverized coal, and to contribute to addressing the potential of chemical engineering models for the prediction of furnace temperatures, NO emissions and the amount of carbon in ash. To this purpose, the effect of coal quality on NO and burnout has been investigated experimentally, a radiation heat balance has been developed based on a simple chemical engineering methodology, and a mixing study has been conducted in order to describe the near burner macro mixing in terms of a reactor configuration. The influence of coal type and process conditions on NO formation and carbon burnout has been investigated experimentally in a 400 MW{sub e} corner fired boiler with over fire air, a 350 MW{sub e} opposed fired boiler, and in a 160 kW{sub t} pilot scale test rig. Three different coals were fired in each of the furnaces as part of the activities in group 3 of the European Union JOULE 2 Extension project `Atmospheric Pressure Combustion of Pulverized Coal and Coal Based Blends for Power Generation`. On the pilot scale test both single stage and air staged tests were  More>>
Publication Date:
Apr 01, 1997
Product Type:
Thesis/Dissertation
Report Number:
NEI-DK-3169
Reference Number:
SCA: 014000; 200202; PA: DK-98:001299; EDB-98:047398; NTS-98:005140; SN: 98001944129
Resource Relation:
Other Information: TH: Thesis (ph.d.); PBD: Apr 1997
Subject:
01 COAL, LIGNITE, AND PEAT; 20 FOSSIL-FUELED POWER PLANTS; NITROGEN OXIDES; COAL; PILOT PLANTS; BURNERS; PULVERIZED FUELS; COMBUSTION KINETICS; TEMPERATURE DEPENDENCE; MOISTURE; BOILERS; HEAT TRANSFER; COMBUSTION PRODUCTS; MATHEMATICAL MODELS
OSTI ID:
591508
Research Organizations:
Danmarks Tekniske Univ., Lyngby (Denmark). Inst. for Kemiteknik; Danmarks Tekniske Univ., Lyngby (Denmark)
Country of Origin:
Denmark
Language:
English
Other Identifying Numbers:
Other: ON: DE98750796; CNN: Contract JOU2-CT93-0380; TRN: DK9801299
Availability:
OSTI as DE98750796
Submitting Site:
DK
Size:
149 p.
Announcement Date:

Citation Formats

Lans, R.P. van der. Influence of process parameters on coal combustion performance. Review, experiments and engineering modeling. Denmark: N. p., 1997. Web.
Lans, R.P. van der. Influence of process parameters on coal combustion performance. Review, experiments and engineering modeling. Denmark.
Lans, R.P. van der. 1997. "Influence of process parameters on coal combustion performance. Review, experiments and engineering modeling." Denmark.
@misc{etde_591508,
title = {Influence of process parameters on coal combustion performance. Review, experiments and engineering modeling}
author = {Lans, R.P. van der}
abstractNote = {The objective of this study is to improve the understanding of nitrogen oxide formation and carbon burnout during the combustion of pulverized coal, and to contribute to addressing the potential of chemical engineering models for the prediction of furnace temperatures, NO emissions and the amount of carbon in ash. To this purpose, the effect of coal quality on NO and burnout has been investigated experimentally, a radiation heat balance has been developed based on a simple chemical engineering methodology, and a mixing study has been conducted in order to describe the near burner macro mixing in terms of a reactor configuration. The influence of coal type and process conditions on NO formation and carbon burnout has been investigated experimentally in a 400 MW{sub e} corner fired boiler with over fire air, a 350 MW{sub e} opposed fired boiler, and in a 160 kW{sub t} pilot scale test rig. Three different coals were fired in each of the furnaces as part of the activities in group 3 of the European Union JOULE 2 Extension project `Atmospheric Pressure Combustion of Pulverized Coal and Coal Based Blends for Power Generation`. On the pilot scale test both single stage and air staged tests were performed. A simple, one-dimensional combustion and radiation heat transfer model has been developed for the furnace of full scale boilers. The model has been applied to the two boilers mentioned above, and is validated against measured temperatures and carbon in ash concentrations. A mixing study has been performed in order to initiate an investigation of the potential of chemical engineering models to predict NO from pulverized fuel burners. (EG) 11 refs.}
place = {Denmark}
year = {1997}
month = {Apr}
}