Numerical Investigation on Coal Combustion in Ultralow CO2 Blast Furnace: Effect of Oxygen Temperature
The cooling effect of room-temperature oxygen in oxygen blast furnaces with top gas recycling (TGR-OBF) delays the coal combustion process. To further explore the oxygen–coal combustion mechanism and intensify coal combustion in TGR-OBF, the effect of oxygen temperature on coal combustion was invest...
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| Veröffentlicht in: | Processes 2020-07, Vol.8 (7), p.877 |
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| creator | Zhou, Zhenfeng Yi, Qiujie Wang, Ruihao Wang, Guang Ma, Chunyuan |
| description | The cooling effect of room-temperature oxygen in oxygen blast furnaces with top gas recycling (TGR-OBF) delays the coal combustion process. To further explore the oxygen–coal combustion mechanism and intensify coal combustion in TGR-OBF, the effect of oxygen temperature on coal combustion was investigated using computational fluid dynamics (CFD). A three-dimensional model was developed to simulate the lance–blowpipe–tuyere–raceway of TGR-OBF. The effect of oxygen temperature at the same oxygen velocity and mass flow on coal combustion was investigated. Results showed the cooling effect of room-temperature oxygen was weakened, and the coal burnout was greatly increased with the increase in oxygen temperature. In particular, the coal burnout increased from 21.64% to 81.98% at the same oxygen velocity when the oxygen temperature increased from 300 to 500 K. The results provide useful reference for the development of TGR-OBF and coal combustion technology. |
| doi_str_mv | 10.3390/pr8070877 |
| format | Article |
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To further explore the oxygen–coal combustion mechanism and intensify coal combustion in TGR-OBF, the effect of oxygen temperature on coal combustion was investigated using computational fluid dynamics (CFD). A three-dimensional model was developed to simulate the lance–blowpipe–tuyere–raceway of TGR-OBF. The effect of oxygen temperature at the same oxygen velocity and mass flow on coal combustion was investigated. Results showed the cooling effect of room-temperature oxygen was weakened, and the coal burnout was greatly increased with the increase in oxygen temperature. In particular, the coal burnout increased from 21.64% to 81.98% at the same oxygen velocity when the oxygen temperature increased from 300 to 500 K. 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To further explore the oxygen–coal combustion mechanism and intensify coal combustion in TGR-OBF, the effect of oxygen temperature on coal combustion was investigated using computational fluid dynamics (CFD). A three-dimensional model was developed to simulate the lance–blowpipe–tuyere–raceway of TGR-OBF. The effect of oxygen temperature at the same oxygen velocity and mass flow on coal combustion was investigated. Results showed the cooling effect of room-temperature oxygen was weakened, and the coal burnout was greatly increased with the increase in oxygen temperature. In particular, the coal burnout increased from 21.64% to 81.98% at the same oxygen velocity when the oxygen temperature increased from 300 to 500 K. The results provide useful reference for the development of TGR-OBF and coal combustion technology.</description><subject>Blast furnace gas</subject><subject>Burnout</subject><subject>Carbon dioxide</subject><subject>Coal</subject><subject>Combustion</subject><subject>Computational fluid dynamics</subject><subject>Computer applications</subject><subject>Computer simulation</subject><subject>Cooling</subject><subject>Cooling effects</subject><subject>Furnaces</subject><subject>Investigations</subject><subject>Mass flow</subject><subject>Mathematical models</subject><subject>Oxygen</subject><subject>Room temperature</subject><subject>Three dimensional models</subject><subject>Tuyeres</subject><subject>Velocity</subject><issn>2227-9717</issn><issn>2227-9717</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNpNUE1Lw0AUXETBUnvwHyx48hDdj-xHvGlotVDspT2HzfZtSUmycTdR---NVsTHg_cYhmFmELqm5I7zjNx3QRNFtFJnaMIYU0mmqDr_91-iWYwHMk5GuRZygtzr0ECorKnxsn2H2Fd701e-xePmfkRz35RD_IGqFm_rPpjaf-B8zfBTbWKPF0NojYUHPHcObI-9w-vP4x5avIGmg2D6IcAVunCmjjD7vVO0Xcw3-UuyWj8v88dVYlnG-gTIzhKTOq2lpkZalpaE0kxYKaUA0DrNHEulMCUQXirjGNsRY62QXBHpHJ-im5NuF_zbMMYpDv7bXx0LljKphBScjKzbE8sGH2MAV3Shakw4FpQU300Wf03yL3X3ZYQ</recordid><startdate>20200701</startdate><enddate>20200701</enddate><creator>Zhou, Zhenfeng</creator><creator>Yi, Qiujie</creator><creator>Wang, Ruihao</creator><creator>Wang, Guang</creator><creator>Ma, Chunyuan</creator><general>MDPI AG</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FH</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>GNUQQ</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KB.</scope><scope>LK8</scope><scope>M7P</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope></search><sort><creationdate>20200701</creationdate><title>Numerical Investigation on Coal Combustion in Ultralow CO2 Blast Furnace: Effect of Oxygen Temperature</title><author>Zhou, Zhenfeng ; 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To further explore the oxygen–coal combustion mechanism and intensify coal combustion in TGR-OBF, the effect of oxygen temperature on coal combustion was investigated using computational fluid dynamics (CFD). A three-dimensional model was developed to simulate the lance–blowpipe–tuyere–raceway of TGR-OBF. The effect of oxygen temperature at the same oxygen velocity and mass flow on coal combustion was investigated. Results showed the cooling effect of room-temperature oxygen was weakened, and the coal burnout was greatly increased with the increase in oxygen temperature. In particular, the coal burnout increased from 21.64% to 81.98% at the same oxygen velocity when the oxygen temperature increased from 300 to 500 K. The results provide useful reference for the development of TGR-OBF and coal combustion technology.</abstract><cop>Basel</cop><pub>MDPI AG</pub><doi>10.3390/pr8070877</doi><oa>free_for_read</oa></addata></record> |
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| source | Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; MDPI - Multidisciplinary Digital Publishing Institute |
| subjects | Blast furnace gas Burnout Carbon dioxide Coal Combustion Computational fluid dynamics Computer applications Computer simulation Cooling Cooling effects Furnaces Investigations Mass flow Mathematical models Oxygen Room temperature Three dimensional models Tuyeres Velocity |
| title | Numerical Investigation on Coal Combustion in Ultralow CO2 Blast Furnace: Effect of Oxygen Temperature |
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