Thermal analysis and kinetic modeling of pulverized coal combustion accompanied with coke breeze

Han, Peng; Wenlong, Zhan; Zhu, Hao-bin; Gao, Lei; Yu, Ying-chang; Zhang, He; Zhang, Junhong; Pang, Qing-hai

doi:10.1007/s42243-021-00590-6

Cited by 4 publications

(1 citation statement)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After injection, the gas utilization rate increased and the fuel ratio fell [20]. Han et al [21] proposed that the ideal coke powder addition was roughly 15% by evaluating the combustion and kinetic characteristics under various coke powder addition settings. The replacement of anthracite by coke breeze in PCI is theoretically possible given the similarities of the two fuels, coke powder and coke breeze.…”

Section: Introductionmentioning

confidence: 99%

Study on the Combustion Performance and Industrial Tests of Coke Breeze in Shougang Jingtang Blast Furnace

Yang

Liu

et al. 2023

Energies

View full text Add to dashboard Cite

In this study, the feasibility indicators of the injection of coke breeze for blast furnaces (BFs) were tested. Experiments were conducted on the combustion behavior of coke breeze at different particle sizes, and the effects of ratio of coke breeze in pulverized coal on the combustion performance of blends were studied. On the basis of the above experiments, industrial tests involving injecting coke breeze after milling were carried out in 3# BF of Shougang Jingtang. The results show that most of the coke breeze particle sizes were distributed above 1 mm. The grindability and combustion performance are poor, so the material needs to be ground before mixing with pulverized coal. The best combustibility can be obtained by using a particle size of less than 8.74 μm of coke breeze in the injection. With the increase in the coke breeze ratio, the combustion performance of blended coal worsened; the negative effects of coke breeze can be improved by increasing the proportion of bituminous coal. According to the results of industrial tests, 8% coke breeze in blends had no negative effect on the smelting state, and the output of the BF increased slightly. Industrial tests proved that coke breeze can partly replace anthracite for BF injecting, which reduced the cost of hot metal while realizing the high value-added resource utilization of coke breeze.

show abstract

Section: Introductionmentioning

confidence: 99%