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The application of FLOX/COSTAIR technologies to reduce NOx emissions from coal/biomass fired power plant: a technical assessment based on computational simulation
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Wang, Y. D., McIlveen-Wright, D., Huang, Y., Hewitt, N., Eames, P. C., Rezvani, S., McMullan, J. and Roskilly, A. P.. (2007) The application of FLOX/COSTAIR technologies to reduce NOx emissions from coal/biomass fired power plant: a technical assessment based on computational simulation. Fuel, Vol.86 (No.14). pp. 2101-2108. ISSN 0016-2361
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Official URL: http://dx.doi.org/10.1016/j.fuel.2007.01.013
Abstract
Nitrogen oxides (NOx) is one of the harmful emissions from power plants. Efforts are made to reduce NOx emissions by researchers and engineers all the times. NO, emissions are from three resources during the combustion: prompt NO, fuel NO and thermal NO. The last one - thermal NO, which is described by `Zeldovich-mechanism', is the main source for NOx emissions. The thermal NO emission mainly results from the high combustion temperature in the combustion process. In order to control the NO formation, the control of peak combustion temperature is the key factor, as well as the oxygen concentration in the combustion areas. Flameless oxidation (FLOX) and continuous staged air combustion (COSTAIR) are two relatively new technologies to control the combustion temperature and the reaction rate and consequently to control the NO, emissions.
In this study both FLOX and COSTAIR technologies are assessed based on a 12 MW,, coal-fired, circulating fluidised bed combustion (CFBC) power plant by using ECLIPSE simulation software, together with a circulating fluidised bed gasification (CFBG) plus normal burner plant. Two different fuels - coal and biomass (straw) are used for the simulation. The technical results from the study show that the application of FLOX technology to the plant may reduce NO, emissions by 90% and the application of COSTAIR technology can reduce NO, emissions by 80-85% from the power plant. The emissions from the straw-fuelled plants are all lower than that of coal-fuelled ones although with less plant efficiencies. (c) 2007 Elsevier Ltd. All rights reserved.
| Item Type: | Journal Article | ||||
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| Subjects: | T Technology > TJ Mechanical engineering and machinery T Technology > TP Chemical technology |
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| Divisions: | Faculty of Science > Engineering | ||||
| Journal or Publication Title: | Fuel | ||||
| Publisher: | Elsevier Ltd | ||||
| ISSN: | 0016-2361 | ||||
| Official Date: | September 2007 | ||||
| Dates: |
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| Volume: | Vol.86 | ||||
| Number: | No.14 | ||||
| Number of Pages: | 8 | ||||
| Page Range: | pp. 2101-2108 | ||||
| Identification Number: | 10.1016/j.fuel.2007.01.013 | ||||
| Status: | Not Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Title of Event: | 6th European Meeting on Coal Research and Its Applications | ||||
| Type of Event: | Other | ||||
| Location of Event: | Univ Kent, Canterbury, England | ||||
| Date(s) of Event: | September, 2006 | ||||
| URI: | http://wrap.warwick.ac.uk/id/eprint/31409 |
Data sourced from Thomson Reuters' Web of Knowledge
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