Combustion characteristics and kinetic analysis of pulverized coal under different pressure grades
By using thermo gravimetric balance, experimental research on combustion characteristics and dynamics parameters of the typical coal injection from some domestic steelworks are conducted with non-isothermal method. The combustion characteristic parameters of the sample pulverized coal such as igniti...
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| Format: | Article |
| Language: | zho |
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Hebei University of Science and Technology
2016-02-01
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| Series: | Journal of Hebei University of Science and Technology |
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| Online Access: | http://xuebao.hebust.edu.cn/hbkjdx/ch/reader/create_pdf.aspx?file_no=b201601015&flag=1&journal_ |
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| author | Qiwei ZUO Daqiang CANG Jun ZHAO Jingbo YANG Xia AN |
| author_facet | Qiwei ZUO Daqiang CANG Jun ZHAO Jingbo YANG Xia AN |
| author_sort | Qiwei ZUO |
| collection | DOAJ |
| description | By using thermo gravimetric balance, experimental research on combustion characteristics and dynamics parameters of the typical coal injection from some domestic steelworks are conducted with non-isothermal method. The combustion characteristic parameters of the sample pulverized coal such as ignition temperature, peak temperature at maximum weight loss rate, burnout temperature, general burn exponent(S), and maximum combustion rate are studied under pressure grades of 0.1, 1.1, 2.1, 3.1 and 4.1 MPa, the activation energy (E) and pre-exponential factor in the combustion process are calculated. The results show that when the pressure increases from 0.1 to 4.1 MPa, ignition temperature decreases by 85.7 K at most, peak temperature at maximum weight loss rate decreases by 249.3 K at most, burnout temperature decreases by 375 K at most, maximum weight loss rate increases by 10 times, and S increases by 33.6 times at most. It is also shown that there exists a kinetic complementation between E and ln A from the view point of dynamics, and the critical pressure of pulverized coal reaction control requirement and combustion mode transform is 3.1 MPa for the pulverized coal. |
| first_indexed | 2024-12-14T12:45:12Z |
| format | Article |
| id | doaj.art-8d4d05775d5042b8909b9179a62f7bfa |
| institution | Directory Open Access Journal |
| issn | 1008-1542 |
| language | zho |
| last_indexed | 2024-12-14T12:45:12Z |
| publishDate | 2016-02-01 |
| publisher | Hebei University of Science and Technology |
| record_format | Article |
| series | Journal of Hebei University of Science and Technology |
| spelling | doaj.art-8d4d05775d5042b8909b9179a62f7bfa2022-12-21T23:00:48ZzhoHebei University of Science and TechnologyJournal of Hebei University of Science and Technology1008-15422016-02-01371889510.7535/hbkd.2016yx01015b201601013Combustion characteristics and kinetic analysis of pulverized coal under different pressure gradesQiwei ZUO0Daqiang CANG1Jun ZHAO2Jingbo YANG3Xia AN4School of Metallurgical and Ecological Engineering, University of Science &Technology Beijing, Beijing 100083, ChinaSchool of Metallurgical and Ecological Engineering, University of Science &Technology Beijing, Beijing 100083, ChinaTechnology Center, Tangshan Iron and Steel Company Limited, Tangshan, Hebei 063016, ChinaSchool of Metallurgical and Ecological Engineering, University of Science &Technology Beijing, Beijing 100083, ChinaTechnology Center, Tangshan Iron and Steel Company Limited, Tangshan, Hebei 063016, ChinaBy using thermo gravimetric balance, experimental research on combustion characteristics and dynamics parameters of the typical coal injection from some domestic steelworks are conducted with non-isothermal method. The combustion characteristic parameters of the sample pulverized coal such as ignition temperature, peak temperature at maximum weight loss rate, burnout temperature, general burn exponent(S), and maximum combustion rate are studied under pressure grades of 0.1, 1.1, 2.1, 3.1 and 4.1 MPa, the activation energy (E) and pre-exponential factor in the combustion process are calculated. The results show that when the pressure increases from 0.1 to 4.1 MPa, ignition temperature decreases by 85.7 K at most, peak temperature at maximum weight loss rate decreases by 249.3 K at most, burnout temperature decreases by 375 K at most, maximum weight loss rate increases by 10 times, and S increases by 33.6 times at most. It is also shown that there exists a kinetic complementation between E and ln A from the view point of dynamics, and the critical pressure of pulverized coal reaction control requirement and combustion mode transform is 3.1 MPa for the pulverized coal.http://xuebao.hebust.edu.cn/hbkjdx/ch/reader/create_pdf.aspx?file_no=b201601015&flag=1&journal_iron makingpulverized coalpressure thermo gravimetric analysiscombustionkinetics parameterscritical pressure |
| spellingShingle | Qiwei ZUO Daqiang CANG Jun ZHAO Jingbo YANG Xia AN Combustion characteristics and kinetic analysis of pulverized coal under different pressure grades Journal of Hebei University of Science and Technology iron making pulverized coal pressure thermo gravimetric analysis combustion kinetics parameters critical pressure |
| title | Combustion characteristics and kinetic analysis of pulverized coal under different pressure grades |
| title_full | Combustion characteristics and kinetic analysis of pulverized coal under different pressure grades |
| title_fullStr | Combustion characteristics and kinetic analysis of pulverized coal under different pressure grades |
| title_full_unstemmed | Combustion characteristics and kinetic analysis of pulverized coal under different pressure grades |
| title_short | Combustion characteristics and kinetic analysis of pulverized coal under different pressure grades |
| title_sort | combustion characteristics and kinetic analysis of pulverized coal under different pressure grades |
| topic | iron making pulverized coal pressure thermo gravimetric analysis combustion kinetics parameters critical pressure |
| url | http://xuebao.hebust.edu.cn/hbkjdx/ch/reader/create_pdf.aspx?file_no=b201601015&flag=1&journal_ |
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