Comparison of NO x reduction among different coal combustion methods and the application of decoupling combustion
The reduction of NO x emission via different coal combustion methods was studied in a two-stage reactor using 3 different coals. The NO x formation is effectively suppressed by reburning the gas from pyrolysis and partial gasification of coal, making the NO x emission obviously lower than that...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Published: |
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/56030 |
| _version_ | 1848759768446926848 |
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| author | Shang, X. Gao, S. Wang, Y. Dong, Li Xu, G. Guo, J. |
| author_facet | Shang, X. Gao, S. Wang, Y. Dong, Li Xu, G. Guo, J. |
| author_sort | Shang, X. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The reduction of NO x emission via different coal combustion methods was studied in a two-stage reactor using 3 different coals. The NO x formation is effectively suppressed by reburning the gas from pyrolysis and partial gasification of coal, making the NO x emission obviously lower than that of the air-staged combustion. It is found that the decoupling combustion leads to the higher NO x reduction rate, which is over 32% in comparison with the normal combustion. The NO x reduction rates vary with the coal properties. The smaller the fuel ratio (fixed carbon to volatile matter)at per nitrogen content in coal, the lower NO x emission is for reburning the combustible gas from pyrolysis and gasification and also for the decoupling combustion. The NO x emission due to reburning the partial gasification gas varies with the oxygen amount applied in the gasification, and the lowest NO x emission is realized in the oxygen concentration from 8% to 10%. A 1.4 MW industrial boiler was designed according to the principle of the decoupling combustion technology. The running data for the same coal show that the decoupling combustion reduces 32.9% NO x emission in comparison with the traditional combustion. |
| first_indexed | 2025-11-14T10:05:08Z |
| format | Journal Article |
| id | curtin-20.500.11937-56030 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:05:08Z |
| publishDate | 2012 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-560302023-08-02T06:39:09Z Comparison of NO x reduction among different coal combustion methods and the application of decoupling combustion Shang, X. Gao, S. Wang, Y. Dong, Li Xu, G. Guo, J. The reduction of NO x emission via different coal combustion methods was studied in a two-stage reactor using 3 different coals. The NO x formation is effectively suppressed by reburning the gas from pyrolysis and partial gasification of coal, making the NO x emission obviously lower than that of the air-staged combustion. It is found that the decoupling combustion leads to the higher NO x reduction rate, which is over 32% in comparison with the normal combustion. The NO x reduction rates vary with the coal properties. The smaller the fuel ratio (fixed carbon to volatile matter)at per nitrogen content in coal, the lower NO x emission is for reburning the combustible gas from pyrolysis and gasification and also for the decoupling combustion. The NO x emission due to reburning the partial gasification gas varies with the oxygen amount applied in the gasification, and the lowest NO x emission is realized in the oxygen concentration from 8% to 10%. A 1.4 MW industrial boiler was designed according to the principle of the decoupling combustion technology. The running data for the same coal show that the decoupling combustion reduces 32.9% NO x emission in comparison with the traditional combustion. 2012 Journal Article http://hdl.handle.net/20.500.11937/56030 restricted |
| spellingShingle | Shang, X. Gao, S. Wang, Y. Dong, Li Xu, G. Guo, J. Comparison of NO x reduction among different coal combustion methods and the application of decoupling combustion |
| title | Comparison of NO x reduction among different coal combustion methods and the application of decoupling combustion |
| title_full | Comparison of NO x reduction among different coal combustion methods and the application of decoupling combustion |
| title_fullStr | Comparison of NO x reduction among different coal combustion methods and the application of decoupling combustion |
| title_full_unstemmed | Comparison of NO x reduction among different coal combustion methods and the application of decoupling combustion |
| title_short | Comparison of NO x reduction among different coal combustion methods and the application of decoupling combustion |
| title_sort | comparison of no x reduction among different coal combustion methods and the application of decoupling combustion |
| url | http://hdl.handle.net/20.500.11937/56030 |