Mathematical Model of Gas Flow Distribution in a Scale Model of a Blast Furnace Shaft

The distribution of burden layers in an ironmaking blast furnace strongly influences the conditions in the upper part of the process. The bed permeability largely depends on the distribution of ore and coke in the lumpy zone, which affects the radial gas flow distribution in the shaft. Along with the continuous advancement of technology, more information about the internal conditions of the blast furnace can be obtained through advanced measurement equipment, including 2D profiles and 3D surface maps of the top burden surface. However, the change of layer structure along with the burden descent cannot be directly measured. A mathematical model predicting the burden distribution and the internal layer structure during the descending process is established in this paper. The accuracy of the burden distribution model is verified by a comparison with experimental results. A sensitivity study was undertaken to clarify the role of some factors on the arising layer distribution, including the descent-rate distribution, the initial burden surface profile, and the charging direction through the charging matrix. The findings can be used as a theoretical basis to guide plant operations for optimizing the charging.

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A model for burden distribution and gas flow distribution of bell-less top blast furnace with parallel hoppers

Applied Mathematical Modelling ◽

10.1016/j.apm.2016.07.024 ◽

2016 ◽

Vol 40 (23-24) ◽

pp. 10254-10273 ◽

Cited By ~ 10

Author(s):

Lin Shi ◽

Guangsheng Zhao ◽

Mingxin Li ◽

Xiang Ma

Keyword(s):

Blast Furnace ◽

Gas Flow ◽

Flow Distribution ◽

Burden Distribution

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Development of the Burden Distribution and Gas Flow Model in the Blast Furnace Shaft

ISIJ International ◽

10.2355/isijinternational.51.1617 ◽

2011 ◽

Vol 51 (10) ◽

pp. 1617-1623 ◽

Cited By ~ 18

Author(s):

Jong-In Park ◽

Ui-Hyun Baek ◽

Kyoung-Soo Jang ◽

Han-Sang Oh ◽

Jeong-Whan Han

Keyword(s):

Blast Furnace ◽

Gas Flow ◽

Flow Model ◽

Burden Distribution ◽

Furnace Shaft

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Transformation of a mathematical model of gas flow distribution to solve the problems of gas supply system development

E3S Web of Conferences ◽

10.1051/e3sconf/202021902001 ◽

2020 ◽

Vol 219 ◽

pp. 02001

Author(s):

Nikolay Ilkevich ◽

Tatyana Dzyubina ◽

Zhanna Kalinina

Keyword(s):

Mathematical Model ◽

Gas Flow ◽

System Development ◽

Flow Distribution ◽

Supply System ◽

Economic Environment ◽

Gas Flows ◽

Supply Systems ◽

New Criteria ◽

Gas Supply

This paper proposes taking into account new properties of gas supply systems in a mathematical model of flow distribution in comparison with the traditional formulation. The approach suggests introducing an arc coefficient, which allows for changes in the magnitude of gas flow passing along the arc, a vector of an increase in the arc throughput, and lower constraints on the gas flow along the arc. We also propose considering a new economic environment, namely, new criteria for optimizing the flow distribution and setting fictitious gas prices for consumers. These criteria enable us to take account of the priority gas supply to a definite group of consumers. As an example, the calculation of gas flows for the aggregated Unified Gas Supply System (UGSS) for 2030 is considered. This calculation takes into account the arc coefficients and the increase in the throughput of arcs.

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A Mathematical Model Combined with Radar Data for Bell-Less Charging of a Blast Furnace

Processes ◽

10.3390/pr8020239 ◽

2020 ◽

Vol 8 (2) ◽

pp. 239 ◽

Cited By ~ 2

Author(s):

Meng Li ◽

Han Wei ◽

Yao Ge ◽

Guocai Xiao ◽

Yaowei Yu

Keyword(s):

Mathematical Model ◽

Blast Furnace ◽

Gas Flow ◽

Radar Data ◽

Radar System ◽

Utilization Efficiency ◽

Burden Distribution ◽

Gas Utilization ◽

Reduce Energy Consumption ◽

The Mathematical Model

Charging directly affects the burden distribution of a blast furnace, which determines the gas distribution in the shaft of the furnace. Adjusting the charging can improve the distribution of the gas flow, increase the gas utilization efficiency of the furnace, reduce energy consumption, and prolong the life of the blast furnace. In this paper, a mathematical model of blast furnace charging was developed and applied on a steel plant in China, which includes the display of the burden profile, burden layers, descent speed of the layers, and ore/coke ratio. Furthermore, the mathematical model is developed to combine the radar data of the burden profile. The above model is currently used in Nanjing Steel as a reference for operators to adjust the charging. The model is being tested with a radar system on the blast furnace.

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Gas flow distribution in a blast furnace

Metallurgist ◽

10.1007/bf00740627 ◽

1969 ◽

Vol 13 (1) ◽

pp. 10-12

Author(s):

V. I. Vier ◽

L. Ya. Shparber

Keyword(s):

Blast Furnace ◽

Gas Flow ◽

Flow Distribution

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A Mathematical Model of Blast Furnace Considering Radial Distribution of Gas Flow, Heat Transfer and Reactions

Tetsu-to-Hagane ◽

10.2355/tetsutohagane1955.66.13_1898 ◽

1980 ◽

Vol 66 (13) ◽

pp. 1898-1907 ◽

Cited By ~ 24

Author(s):

Michiharu HATANO ◽

Koichi KURITA

Keyword(s):

Heat Transfer ◽

Mathematical Model ◽

Blast Furnace ◽

Radial Distribution ◽

Gas Flow ◽

Flow Heat

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Flow Guiding and Distributing Devices on the Exhaust Side of Stationary Gas Turbines

Journal of Engineering for Gas Turbines and Power ◽

10.1115/1.2906481 ◽

1990 ◽

Vol 112 (1) ◽

pp. 80-85

Author(s):

F. Fleischer ◽

C. Koerner ◽

J. Mann

Keyword(s):

Gas Turbine ◽

Gas Turbines ◽

Gas Flow ◽

Flow Simulation ◽

Exhaust System ◽

Flow Distribution ◽

Scale Model ◽

Gas Turbine Exhaust ◽

First Time ◽

Turbine Exhaust

Following repeated cases of damage caused to exhaust silencers located directly beyond gas turbine diffusers, this paper reports on investigations carried out to determine possible remedies. In all instances, an uneven exhaust gas flow distribution was found. The company’s innovative approach to the problem involved constructing a scale model of a complete gas turbine exhaust system and using it for flow simulation purposes. It was established for the first time that, subject to certain conditions, the results of tests conducted on a model can be applied to the actual turbine exhaust system. It is shown that when an unfavorable duct arrangement might produce an uneven exhaust flow, scale models are useful in the development of suitable flow-distributing devices.

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