LAPSE:2020.1147
Published Article
LAPSE:2020.1147
Numerical Investigation on Coal Combustion in Ultralow CO2 Blast Furnace: Effect of Oxygen Temperature
November 9, 2020
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.
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Keywords
burnout, Coal, oxygen temperature, raceway, TGR-OBF
Subject
Suggested Citation
Zhou Z, Yi Q, Wang R, Wang G, Ma C. Numerical Investigation on Coal Combustion in Ultralow CO2 Blast Furnace: Effect of Oxygen Temperature. (2020). LAPSE:2020.1147
Author Affiliations
Zhou Z: College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Yi Q: College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Wang R: College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Wang G: State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China
Ma C: National Engineering Laboratory of Coal-Fired Pollution Reduction, Shandong University, Jinan 250061, China
Yi Q: College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Wang R: College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Wang G: State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China
Ma C: National Engineering Laboratory of Coal-Fired Pollution Reduction, Shandong University, Jinan 250061, China
Journal Name
Processes
Volume
8
Issue
7
Article Number
E877
Year
2020
Publication Date
2020-07-20
Published Version
ISSN
2227-9717
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Original Submission
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PII: pr8070877, Publication Type: Journal Article
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Published Article
LAPSE:2020.1147
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External Link
doi:10.3390/pr8070877
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Version History
[v1] (Original Submission)
Nov 9, 2020
Verified by curator on
Nov 9, 2020
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v1
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https://psecommunity.org/LAPSE:2020.1147
Original Submitter
Calvin Tsay
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