A Visualization Method of Quantifying Carbon Combustion Energy in the Sintering Packed Bed

Sun, Chengfeng; Yang, Ying; Xu, Yang; Liao, Zhongju; Pei, Yuandong; Zhou, Qi Tony; Lv, Xuewei; Xu, Jian

doi:10.2355/isijinternational.isijint-2020-700

ISIJ Int.

2021

DOI: 10.2355/isijinternational.isijint-2020-700

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A Visualization Method of Quantifying Carbon Combustion Energy in the Sintering Packed Bed

Chengfeng Sun

Ying Yang

Yang Xu

et al.

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Cited by 3 publications

References 44 publications

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Intensive carbon combustion in sintering packed bed via steam spraying: An experimental study on carbon monoxide emission reduction

Sun

Zhou

et al. 2023

J. Cent. South Univ.

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Improving the combustion efficiency of solid fuels is important for reducing carbon monoxide emissions in the iron ore sintering process. In this paper, the surface steam spraying technology is introduced in the sintering process based on the auxiliary combustion effect of steam on coke, and its potential to reduce carbon monoxide emissions is demonstrated. Thermogravimetric analysis experiments of coke breeze in air and air-steam mixed atmosphere are carried out, and the results show that the introduction of steam can reduce the concentration of carbon monoxide in exhaust gases from 183×10 −6 to 78×10 −6 . At the same time, the mechanisms of carbon monoxide emission reduction by surface steam spraying technology are analyzed from the thermodynamic and kinetic perspectives. Then, a series of laboratoryscale sintering pot tests are carried out under no spraying operation, interval spraying operation, and continuous spraying operation. The results indicate that both intervally and continuously spraying operations can reduce carbon monoxide emissions. The optimal mode of steam spraying under the present experimental conditions is continuously spraying for 13 min at a volume rate of 0.053 m 3 /min. Compared with no spraying, the average carbon monoxide concentration in the exhaust gas is reduced from 7565×10 −6 to 6231×10 −6 , and total carbon monoxide emissions for per ton sinter are reduced from 13.46 m 3 /t to 9.51 m 3 /t.

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Intensive carbon combustion in sintering packed bed via steam spraying: An experimental study on carbon monoxide emission reduction

Sun

Zhou

et al. 2023

J. Cent. South Univ.

Self Cite

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Intensive reduction of fuel consumption in the sintering process of double-layered fuel segregation with return fines embedding

Sun

Deng

et al. 2023

Fuel

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Research on combustion visualization of coal-fired boilers based on thermal imaging technology

Zhang,

Pan,

Wang

2024

Therm sci

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At present, there?s a lack of combustion visualization in the combustion control of heating boilers. To understand the combustion of coal in the furnace, only experienced workers can observe it through visual inspection. Using infrared thermal imaging technology to monitor the combustion can realize combustion visualization. This paper analyzed and solved two problems: the installation position and number of infrared cameras, and the infeasible of using infrared cameras observing the combustion condition in the furnace through heat-resistant glass. Monitored parameters such as oxygen content, furnace temperature and smoke exhaust temperature, and monitored the concentration of PM, NOX, and SO2 in the main atmospheric pollutants in the flue gas. After calculation, the air leakage coefficient when the inspection doors are opened for observation is 0.04. This value still includes the sum of air leakage from coal hopper, furnace door, grate side seal, peep holes and other parts. The monitored average emission concentration of PM decreased by 16.28%, from which we can concluded that the use of thermal imaging technology to monitor the combustion in the furnace is conducive to emission reduction. The application of thermal imaging technology implementation of coal-fired boiler combustion visualization is feasible.

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A Visualization Method of Quantifying Carbon Combustion Energy in the Sintering Packed Bed

Cited by 3 publications

References 44 publications

Intensive carbon combustion in sintering packed bed via steam spraying: An experimental study on carbon monoxide emission reduction

Intensive carbon combustion in sintering packed bed via steam spraying: An experimental study on carbon monoxide emission reduction

Intensive reduction of fuel consumption in the sintering process of double-layered fuel segregation with return fines embedding

Research on combustion visualization of coal-fired boilers based on thermal imaging technology

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