|
|
|
| Effect of Pulverized Coal Injection on the Theoretical Flame Temperature Before Tuyere in COREX Melter-Gasifier |
| QU Jun-jie，WU Keng，WANG Chong-mao，FU Ping，ZHAN Wen-long，SHAO Teng-fei |
| School of Metallurgical and Ecological Engineering， University of Science and Technology Beijing, Beijing 100083, China |
|
|
|
|
Abstract The theoretical flame temperature (TFT) before tuyere in COREX melter-gasifier was one of the most important parameters to measure the heat balance of the area before tuyere and predict the thermal state of the hearth. Based on the calculating formula of TFT with regard to the reduction of SiO2, the effect of pulverized coal injection (PCI) into melter-gasifier on TFT before tuyere was discussed. TFT before tuyere in melter-gasifier under different PCI conditions was calculated. Afterwards, the effects of PCI rate, volatile matter content and the temperature of coke (semicoke) entering the combustion zone were all discussed, which provided necessary references for choosing proper coal types for PCI into COREX melter-gasifier.
|
|
Received: 22 October 2011
Published: 27 June 2012
|
|
|
|
| [1] |
PENG Zheng-fu, ZHANG Jian-liang, BI Chuan-guang, NING Xiao-jun, TAN Pei-long, WANG Guang-wei. Effect of coke powder and semi-coke on combustion characteristics of blast furnace blended coal[J]. Iron and Steel, 2019, 54(12): 10-18. |
| [2] |
GAO Peng，ZHAO Dan-ning，WANG Ping，LI Hua-jun，YU Chang-you，WEI Ru-fei. Study and application on combustibility of pulverized coal injection at 4 000 m3 BF of Masteel[J]. Iron and Steel, 2018, 53(12): 10-17. |
| [3] |
GAO Qiang-jian，HE Yun-feng，LIU Zhao，YANG Fu-cai. Fundamental of explosibility of pulverized coal injection and suppressed measures[J]. Iron and Steel, 2018, 53(12): 24-29. |
| [4] |
CHEN Shu-jun,,L Qing, ,BAI Rui-guo,LI Yan-jiang. High-temperature plasma pyrolysis of pulverized coal for blast furance injection at Chengsteel[J]. Chinese Journal of Iron and Steel, 2017, 29(4): 261-265. |
| [5] |
WANG Hai-yang,ZHANG Jian-liang,WANG Guang-wei,LIU Si-yuan,LIN Hao,XU Run-sheng. Feasibility research of brown coal injection for blast furnace[J]. Chinese Journal of Iron and Steel, 2017, 29(1): 39-43. |
| [6] |
LI Yan-jiang,L Qing,BAI Rui-guo,LIU Ran,LI Hong-wei. Combustion-supporting mechanisms of CeO2 for blast furnace pulverized coal injection[J]. Chinese Journal of Iron and Steel, 2016, 28(7): 8-12. |
|
|
|
|
2012, Vol. 47 
