Modelling and analysis of blast furnace performance for efficient utilization of energy

Rasul, M.G.; Tanty, B.S.; Mohanty, B.

doi:10.1016/j.applthermaleng.2006.04.026

Cited by 49 publications

(11 citation statements)

References 6 publications

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“…The conversion of cold to hot blast furnaces is a viable solution to lower the CO emission and increase the energy efficiency, even if this is economically justified only for bigger plants operating continuously. A theoretical study was performed by Rasul et al [31] that presented a model to assess thermal performance of blast furnace, comparing the results with the actual operation. The effect of the changing operating parameters on the plant productivity was also investigated.…”

Section: Cupolasmentioning

confidence: 99%

Energy efficiency opportunities in the production process of cast iron foundries: An experience in Italy

Lazzarin

Noro

2015

Applied Thermal Engineering

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Section: Cupolasmentioning

confidence: 99%

Energy efficiency opportunities in the production process of cast iron foundries: An experience in Italy

Lazzarin

Noro

2015

Applied Thermal Engineering

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“…With the practical production data from the present 750 m 3 blast furnace of Baosteel such as the raw material, fuel and operation parameters, a calculation model of using high reactivity coke is established considering the mass and energy conservation, iron‐making theory and physical chemistry in metallurgical theory . The calculation model is based on the mass flow and energy flow per minute.…”

Section: Model Establishmentmentioning

confidence: 99%

Calculation Model of Using Appropriate High Reactivity Coke in Blast Furnace

Sun

Kou

et al. 2014

steel research int.

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The technology of using high reactivity coke in iron‐making process by blast furnace has been verified to promote the reduction of iron ore in the thermal reserve zone through theoretical analysis combined with experimental research. However, the absence of relative calculation model makes it difficult to determine the coke saving ability quantitatively and supply substantial guidance for industry. In present study, thermal reserve zone and high temperature zone are taken as investigation objects and a calculation model has been established to study the influences of high reactivity coke on reduction of iron oxide, shaft efficiency, and fuel rate. Combined with calculation model, the industrial practice is analyzed by concluding a new important index namely the proportion of high reactivity coke taking Boudouard reaction in the blast furnace (PCTBR for short). The results show that, introduction of high reactivity coke could reduce the temperature of the thermal reserve zone and promote the exothermic indirect reduction of FeO. The high reactivity coke reduces direct reduction, and decreases the heat consumption of high temperature zone by allocating the direct reduction region reasonably as well, which leads to a lower fuel rate. The fuel rate has been reduced by 16.84 kg tHM−1 when the high reactivity coke amount participating Boudouard reaction is 40 kg tHM−1. The PCTBR of WuJing coke and Ca‐rich coke is around 7.8%.

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“…Compared with energy analysis, taking into energy quantity and energy quality comprehensively, exergy analysis can forecast the energy loss composition clearly, especially in the differentiating internal and external energy loss. Since Szargut et al,20 exergy analysis was employed widely to evaluate energy conversation process of iron and steel making system 21–24. The energy loss source of blast furnace operation with NG injection was indicated using exergy analysis method.…”

Section: Exergy Analysis On Blast Furnace Operation With Ng Injectionmentioning

confidence: 99%

Mathematical Modeling and Exergy Analysis of Blast Furnace Operation With Natural Gas Injection

Guo

Chu

Liu

et al. 2012

steel research int.

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Blast furnace operation with natural gas (NG) injection is one of the effective measures to save energy, reduce CO 2 emission, and decrease environmental load for iron and steel industry. Numerical simulations on blast furnace operation with NG injection through tuyeres are performed in this paper by raceway mathematical model, multi-fluid blast furnace model, and exergy analytical model. With increasing NG injection volume, the simulation results are shown as follows: (1) the theoretical flame temperature and bosh gas volume can be constant by decreasing blast volume and increasing oxygen enrichment. (2) The utilization rate of CO enhances while that of H 2 decreases. The proportion of H 2 in indirect reduction tends to be increased, which accelerates the reduction of burdens. The pressure drop shows that the permeability of blast furnace gets better. The blast furnace productivity is increased from 2.07 to 3.08 t Á m À3 Á day À1. The silicon content in hot metal is decreased from 0.26% to 0.05%. When BF operation with 125.4 kg Á tHM À1 NG injection, coke rate and carbon emission rate are decreased by 27.2% and 32.2%, respectively. (3) The thermodynamic perfection degree is increased from 88.40% to 90.50%, the exergy efficiency is decreased from 51.94% to 49.02% and the chemical exergy of top gas is increased from 4.69 to 6.22 GJ Á tHM À1. It is important to strengthen the recycling of top gas.

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Modelling and analysis of blast furnace performance for efficient utilization of energy

Cited by 49 publications

References 6 publications

Energy efficiency opportunities in the production process of cast iron foundries: An experience in Italy

Energy efficiency opportunities in the production process of cast iron foundries: An experience in Italy

Calculation Model of Using Appropriate High Reactivity Coke in Blast Furnace

Mathematical Modeling and Exergy Analysis of Blast Furnace Operation With Natural Gas Injection

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