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2014 | 35 | 4 | 489-496
Article title

The Effect of Oxygen Staging on Nitrogen Conversion in Oxy-Fuel CFB Environment

Content
Title variants
Languages of publication
EN
Abstracts
EN
This paper presents a study on nitrogen conversion in oxy-fuel coal combustion in a pilot scale CFB 0.1 MWth facility. The paper is focused on fuel-N behaviour in the combustion chamber when the combustion process is accomplished under oxy-fuel CFB conditions. The analysis is based on infurnace sampling of flue gas and calculations of the conversion ratios of fuel-nitrogen (fuel-N) to NO, NO2, N2O, NH3 and HCN. For the tests, O2/CO2 mixtures with the oxygen content of 21 vol.% (primary gas) and with the oxygen content varied from 21 to 35 vol.% (secondary gas), were used as the fluidising gas. Measurements were carried out in 4 control points located along the combustion chamber: 0.43 m, 1.45 m, 2.50 m and 4.88 m. Results presented below indicate that an increased oxygen concentration in the higher part of the combustion chamber has strong influence on the behaviour of fuel based nitrogen compounds.
Keywords
EN
oxy-fuel   fuel-N   CFB  
Publisher
Year
Volume
35
Issue
4
Pages
489-496
Physical description
Dates
published
1 - 12 - 2014
online
17 - 12 - 2014
revised
4 - 10 - 2014
received
4 - 4 - 2014
accepted
8 - 10 - 2014
References
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Document Type
Publication order reference
YADDA identifier
bwmeta1.element.-psjd-doi-10_2478_cpe-2014-0036
Identifiers
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