Experiment Research on Pulverized Coal Combustion in the Tuyere of Oxygen Blast Furnace
| Autor: | Jianliang Zhang, Yi-fan Chai, Xiao-jun Ning, Kai-di Wang, Qiu-jun Shao |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Blast furnace
Technology Materials science chemistry.chemical_element Chemicals: Manufacture use etc 02 engineering and technology TP1-1185 unburned pulverized coal Combustion Oxygen complex mixtures 020501 mining & metallurgy Tuyere otorhinolaryngologic diseases pulverized coal injection General Materials Science Physical and Theoretical Chemistry Pulverized coal-fired boiler Chemical technology Metallurgy combustion rate technology industry and agriculture new experimental equipment TP200-248 respiratory system 021001 nanoscience & nanotechnology Condensed Matter Physics respiratory tract diseases 0205 materials engineering chemistry Mechanics of Materials 82.33.vx oxygen blast furnace 0210 nano-technology |
| Zdroj: | High Temperature Materials and Processes, Vol 38, Iss 2019, Pp 42-49 (2019) |
| ISSN: | 2191-0324 0334-6455 |
| Popis: | The actual combustion rate of pulverized coal in the blast furnace tuyere is hard to be measured. In this research, the combustion rate of pulverized coal injected into oxygen blast furnace was obtained by a new equipment. This equipment can simulate the actual blast furnace well, and the relationship between pulverized coal injection (PCI) ratio and AO/C was established by mathematical deduction. The experimental results show that the best combustibility of the four pulverized coals is C, and when the coal injection ratio is 350 kg/tHM, the combustion rate can be reached 79%, while the combustion rate of B in the same case is only 45.6%. With the increase of AO/C , the relative amount of oxygen to coal increases, the combustion conditions become better, and combustion rate of the pulverized coal increases. In addition, under the condition of high temperature and rapid combustion, with the increase of coal’s volatile, the combustion rate increases and the corresponding PCI ratio is also increased. By using the new equipment, the unburned coal under the oxygen blast furnace conditions can be collected for further study. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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