Numerical simulation of sintering based on biomass fuel

Liu, Chao; Zhang, Yuzhu; Shi, Yan; Xing, Hongwei; Kang, Youngjong; Li, Jie

doi:10.1080/03019233.2017.1323393

Cited by 6 publications

(8 citation statements)

References 10 publications

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“…+ SOURCE gg (7) in which Y i is the mass fraction of ith gaseous species and D i is the diffusion coefficient of the i th species in the bulk gas and estimated using the Chapman-Enskog theory. The Lennard-Jones parameters for the species are similar to those used in [24].…”

Section: Gas Species Conservationmentioning

confidence: 99%

Numerical simulation of fuel layered distribution iron ore sintering technology

Shrestha

et al. 2021

Ironmaking & Steelmaking

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FLDS (Fuel Layered Distribution Sintering) is a technology that can effectively reduce fuel consumption with evenly distributed heat pattern in the sintering bed compared to the conventional iron ore sintering. In this paper, a numerical model is established and used to predict the FLDS performance in terms of six different indicators such as FFS (Flame Front Speed), sintering time, maximum temperature, DTMT (Duration Time in Melting Temperature), MQI (Melt Quality Index) and VC (Cooling Velocity). The results show that the FLDS can improve the quality indices of the sinter product and make the process more stable. Moreover, both air velocity and bed height have significant influences on the quality metrics in FLDS operation. Sensitivity analysis shows that the order of sensitivity to air velocity is MQI > VC > FFS > sintering time > DTMT > maximum temperature, while that to the bed height is MQI > DTMT > sintering time > FFS > VC > maximum temperature. The findings are of significance for providing a guideline for FLDS operation.

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Section: Gas Species Conservationmentioning

confidence: 99%

Numerical simulation of fuel layered distribution iron ore sintering technology

Shrestha

et al. 2021

Ironmaking & Steelmaking

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“…According to the experimental results of sintering pot, 40% charcoal and 60% coke breeze were used as sintering fuel for flue gas cyclic sintering. [10][11][12] The composition and proportion of experimental raw materials were shown in Table 1, and the particle size distribution of raw material was shown Table 2.…”

Section: Raw Materialsmentioning

confidence: 99%

“…Meanwhile, the gas flow velocity through the material layer was measured by an anemometer, the average gas flow velocity was approximately 0.6 m/s, and the radius of the sintered pot was 100 mm, so the amount of gas was about 29 m 3 . 11,18,19) when the SO 2 content in flue gas increased to 700 ppm, the mass of SO 2 involved in sintering reaction is about 0.06 kg, and the drum strength decreased obviously. When the SO 2 content in flue gas increased to 900 ppm, the sinter yield decreased from 75.56% to 72.29%.…”

Section: Effect Of So 2 Content In Flue Gas On Sinter Prop-mentioning

confidence: 99%

“…At present, the sintering process of biomass fuel instead of coke breeze and flue gas circulating sintering has been studied. Liu C. et al [10][11][12] studied the preparation of biomass sintering fuel and the effect of biomass fuel instead of coke sintering on the sinter properties. The results showed that the suitable biomass fuel instead of coke did not affect the sinter properties.…”

Section: Introductionmentioning

confidence: 99%

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Flue Gas Circulating Sintering Based on Biomass Fuel on Reduction of NO<sub>x</sub> and SO<sub>2</sub> Emission

et al. 2020

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In order to reduce the emission concentration of sintered flue gas pollutants, the source control technology and process control technology of iron ore sintering were adopted to reduce the emission concentration of flue gas pollutants. In this paper, the experiments of flue gas circulating sintering pot with charcoal instead of partial coke was carried out. The effects of O 2 content, temperature, SO 2 content and NO x content in circulating flue gas on sinter properties and emission concentration of flue gas pollutants were studied. The experimental results show that the suitable oxygen content in flue gas was 14.9%, and the maximum suitable concentration of SO 2 was 500 ppm based on charcoal instead of 40% coke circulating flue gas sintering. The NO x had little effect on the sintering performance index. Under the conditions of flue gas temperature of 200°C and CO content of 0.85%, the content of charcoal instead of coke was increased from 40% to 50%. The emission reduction of sintering flue gas pollutants SO 2 and NO x was more than 42.6% and 65.8%, respectively. The comprehensive utilization of sintering flue gas waste heat and the cooperative control of sintering flue gas pollutants were realized.

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“…However, the reactivity of biomass charcoal is better than that of coke, which leads to a mismatch of their combustion rates, so that the heat of the combustion layer is not concentrated, and the temperature of the layer is reduced, which directly affects the sinter properties [6,7]. Liu et al [8][9][10][11] used a fluent software to simulate the sintering process of biomass charcoal, and an evaluation system of sinter properties was constructed to determine the most suitable amount of biomass charcoal to be used in iron ore sintering. Zhao et al [12] used a newly developed combustion model and a 2D sintering model to appropriately describe the combustion behavior in sintering based on fuel properties, as well as defined the optimum thickness and porosity of the adhering layer.…”

Section: Introductionmentioning

confidence: 99%

Effect of Replacing Coke with Biomass Fuel on Sinter Properties and Pollutant Emissions

Liu

Kang

Zhang

et al. 2022

Metals

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In the iron-ore-sintering process, the use of biomass charcoal instead of coke breeze can reduce the emission of flue gas pollutants and alleviate the energy crisis of fossil fuels. However, the direct application of biomass charcoal to iron ore sintering is bound to affect the sinter properties. The effects of biomass charcoal addition on the sintering ore properties and flue gas pollutants emission were studied through sintering cup and related performance test experiments. Meanwhile, the influence mechanism of biomass charcoal instead of coke breeze on iron ore sintering was expounded. The experimental results show that with an increase in biomass charcoal, the vertical sintering rate increased, the internal pore structure developed rapidly, and the pollutant emission decreased gradually. When the biomass charcoal content was less than 40%, the sinter strength and yield were stable and slightly improved with the increase in biomass charcoal. When the biomass charcoal content was higher than 40%, the metallurgical properties of sinter degraded sharply, making it difficult to meet the production requirements. The comprehensive effect of biomass charcoal on the sinter suggests that the suitable biomass charcoal addition was 40%; under this condition, the reduction in SO2 and NOx was 28.2% and 25.7%, respectively.

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Numerical simulation of sintering based on biomass fuel

Cited by 6 publications

References 10 publications

Numerical simulation of fuel layered distribution iron ore sintering technology

Numerical simulation of fuel layered distribution iron ore sintering technology

Flue Gas Circulating Sintering Based on Biomass Fuel on Reduction of NO<sub>x</sub> and SO<sub>2</sub> Emission

Effect of Replacing Coke with Biomass Fuel on Sinter Properties and Pollutant Emissions

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