Analysis of Chemical Reaction Kinetics Behavior of Nitrogen Oxide During Air-staged Combustion in Pulverized Boiler
Because the air-staged combustion technology is one of the key technologies with low investment running costs and high emission reduction efficiency for the pulverized boiler, it is important to reveal the chemical reaction kinetics mechanism for developing various technologies of nitrogen oxide red...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)
2016-04-01
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| Series: | Bulletin of Chemical Reaction Engineering & Catalysis |
| Subjects: | |
| Online Access: | https://journal.bcrec.id/index.php/bcrec/article/view/431 |
| _version_ | 1797677725112074240 |
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| author | Jun-Xia Zhang Jiang Feng Zhang |
| author_facet | Jun-Xia Zhang Jiang Feng Zhang |
| author_sort | Jun-Xia Zhang |
| collection | DOAJ |
| description | Because the air-staged combustion technology is one of the key technologies with low investment running costs and high emission reduction efficiency for the pulverized boiler, it is important to reveal the chemical reaction kinetics mechanism for developing various technologies of nitrogen oxide reduction emissions. At the present work, a three-dimensional mesh model of the large-scale four corner tangentially fired boiler furnace is established with the GAMBIT pre-processing of the FLUENT software. The partial turbulent premixed and diffusion flame was simulated for the air-staged combustion processing. Parameters distributions for the air-staged and no the air-staged were obtained, including in-furnace flow field, temperature field and nitrogen oxide concentration field. The results show that the air-staged has more regular velocity field, higher velocity of flue gas, higher turbulence intensity and more uniform temperature of flue gas. In addition, a lower negative pressure zone and lower O2 concentration zone is formed in the main combustion zone, which is conducive to the NO of fuel type reduced to N2, enhanced the effect of NOx reduction. |
| first_indexed | 2024-03-11T22:49:23Z |
| format | Article |
| id | doaj.art-0ac32f26225448e786440834eee1f712 |
| institution | Directory Open Access Journal |
| issn | 1978-2993 |
| language | English |
| last_indexed | 2024-03-11T22:49:23Z |
| publishDate | 2016-04-01 |
| publisher | Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS) |
| record_format | Article |
| series | Bulletin of Chemical Reaction Engineering & Catalysis |
| spelling | doaj.art-0ac32f26225448e786440834eee1f7122023-09-22T03:50:12ZengMasyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)Bulletin of Chemical Reaction Engineering & Catalysis1978-29932016-04-0111110010810.9767/bcrec.11.1.431.100-108355Analysis of Chemical Reaction Kinetics Behavior of Nitrogen Oxide During Air-staged Combustion in Pulverized BoilerJun-Xia Zhang0Jiang Feng Zhang1School of Energy Engineering, Yulin University, Yulin City, Shanxi Province 719000, ChinaNorthwest Electric Power Construction Company, Xian City, Shanxi Province, 710032, ChinaBecause the air-staged combustion technology is one of the key technologies with low investment running costs and high emission reduction efficiency for the pulverized boiler, it is important to reveal the chemical reaction kinetics mechanism for developing various technologies of nitrogen oxide reduction emissions. At the present work, a three-dimensional mesh model of the large-scale four corner tangentially fired boiler furnace is established with the GAMBIT pre-processing of the FLUENT software. The partial turbulent premixed and diffusion flame was simulated for the air-staged combustion processing. Parameters distributions for the air-staged and no the air-staged were obtained, including in-furnace flow field, temperature field and nitrogen oxide concentration field. The results show that the air-staged has more regular velocity field, higher velocity of flue gas, higher turbulence intensity and more uniform temperature of flue gas. In addition, a lower negative pressure zone and lower O2 concentration zone is formed in the main combustion zone, which is conducive to the NO of fuel type reduced to N2, enhanced the effect of NOx reduction.https://journal.bcrec.id/index.php/bcrec/article/view/431combustionpulverized coalair-stagedchemical reaction kinetics mechanism of nox |
| spellingShingle | Jun-Xia Zhang Jiang Feng Zhang Analysis of Chemical Reaction Kinetics Behavior of Nitrogen Oxide During Air-staged Combustion in Pulverized Boiler Bulletin of Chemical Reaction Engineering & Catalysis combustion pulverized coal air-staged chemical reaction kinetics mechanism of nox |
| title | Analysis of Chemical Reaction Kinetics Behavior of Nitrogen Oxide During Air-staged Combustion in Pulverized Boiler |
| title_full | Analysis of Chemical Reaction Kinetics Behavior of Nitrogen Oxide During Air-staged Combustion in Pulverized Boiler |
| title_fullStr | Analysis of Chemical Reaction Kinetics Behavior of Nitrogen Oxide During Air-staged Combustion in Pulverized Boiler |
| title_full_unstemmed | Analysis of Chemical Reaction Kinetics Behavior of Nitrogen Oxide During Air-staged Combustion in Pulverized Boiler |
| title_short | Analysis of Chemical Reaction Kinetics Behavior of Nitrogen Oxide During Air-staged Combustion in Pulverized Boiler |
| title_sort | analysis of chemical reaction kinetics behavior of nitrogen oxide during air staged combustion in pulverized boiler |
| topic | combustion pulverized coal air-staged chemical reaction kinetics mechanism of nox |
| url | https://journal.bcrec.id/index.php/bcrec/article/view/431 |
| work_keys_str_mv | AT junxiazhang analysisofchemicalreactionkineticsbehaviorofnitrogenoxideduringairstagedcombustioninpulverizedboiler AT jiangfengzhang analysisofchemicalreactionkineticsbehaviorofnitrogenoxideduringairstagedcombustioninpulverizedboiler |