scholarly journals Gas-Solid Flow Applications for Powder Handling in Industrial Furnaces Operations

10.5772/22393 ◽  
2011 ◽  
Author(s):  
Paulo Douglas Santos de Vasconcelos ◽  
Andre Luiz Amarante Mesquit
Keyword(s):  
Solid Flow

scholarly journals A downscaling cold model for solid flow behaviour in a top gas recycling-oxygen blast furnace

2020 ◽  
Vol 39 (1) ◽  
pp. 447-456
Author(s):  
Zhenlong An ◽  
Jingbin Wang ◽  
Yanjun Liu ◽  
Yingli Liu ◽  
Xuefeng She ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Gas Flow ◽  
Stagnant Zone ◽  
Flow Zone ◽  
Cold Model ◽  
Solid Flow ◽  
Oxygen Blast ◽  
Top Gas Recycling ◽  
Batch Weight ◽  
Gas Recycling

AbstractThe top gas recycling-oxygen blast furnace (TGR-OBF) is a reasonable method used to reduce both coke rate and energy consumption in the steel industry. An important feature of this process is shaft gas injection. This article presents an experimental study on the gas–solid flow characteristics in a TGR-OBF using a two-dimensional cold model. The experimental conditions and parameters were determined using a series of similarity criteria. The results showed that the whole flow area in the TGR-OBF can be divided into four distinct flow zones, namely, the stagnant zone, the plug flow zone in the upper part of the shaft, the converging flow zone and the quasi-stagnant flow zone, which is similar to that in a traditional blast furnace. Then the effects of batch weight and the ratio (X) of the shaft injected gas flow rate to the total gas flow rate on solid flow behaviour were investigated in detail. With the increase in batch weight, the shape of the stagnant zone tends to be shorter and thicker. Furthermore, with the increase in X value from 0 to 1, the stagnant zone gradually becomes thinner and higher. The results obtained from the experiments provide fundamental data and a validation for the discrete element method–computational fluid dynamics-coupled mathematical model for TGR-OBFs for future studies.

scholarly journals Influence of center gas supply device on gas–solid flow in COREX shaft furnace through DEM–CFD model

2020 ◽  
Vol 18 (5-6) ◽  
Author(s):  
Heng Zhou ◽  
Shuyu Wang ◽  
Binbin Du ◽  
Mingyin Kou ◽  
Zhiyong Tang ◽  
...  
Keyword(s):  
Gas Flow ◽  
Shaft Furnace ◽  
Middle Zone ◽  
Cfd Model ◽  
Gas Velocity ◽  
Gas Distribution ◽  
Particle Segregation ◽  
Solid Flow ◽  
Corex Shaft Furnace ◽  
Gas Supply

AbstractIn order to develop the central gas flow in COREX shaft furnace, a new installment of center gas supply device (CGD) is designed. In this work, a coupled DEM–CFD model was employed to study the influence of CGD on gas–solid flow in COREX shaft furnace. The particle descending velocity, particle segregation behaviour, void distribution and gas distribution were investigated. The results show that the CGD affects the particles descending velocity remarkably as the burden falling down to the slot. Particle segregation can be observed under the inverse ‘V’ burden profile, and the influence of CGD on the particle segregation is unobvious on the whole, which causes the result that the voidage is slightly changed. Although the effect of CGD on solid flow is not significant, the gas flow in shaft furnace has an obvious change. Compared with the condition without CGD, in the case with CGD, the gas velocity is improved significantly, especially in the middle zone of the furnace, which further promotes the center gas distribution. Meanwhile, the pressure drop in the furnace with the installation of CGD is increased partly.

scholarly journals Numerical investigation on erosion characteristics of coplanar elbows connection for gas-solid flow

2019 ◽  
Vol 158 ◽  
pp. 5245-5250
Author(s):  
Yu Wang ◽  
Rongtang Liu ◽  
Ming Liu ◽  
Junjie Yan
Keyword(s):  
Numerical Investigation ◽  
Solid Flow

Solid Flow in a Shaft Furnace in Smelting Reduction Process under Circumferential Imbalance Conditions

2017 ◽  
Vol 88 (12) ◽  
pp. 1700212 ◽  
Author(s):  
Heng Zhou ◽  
Shengli Wu ◽  
Mingyin Kou ◽  
Biao Tang ◽  
Hanchi Cheng ◽  
...  
Keyword(s):  
Shaft Furnace ◽  
Reduction Process ◽  
Smelting Reduction ◽  
Solid Flow

One-Dimensional Modeling and Measurement of Pulsating Gas-Solid Flow in Tubes

1993 ◽  
Vol 94 (1-6) ◽  
pp. 353-378 ◽  
Author(s):  
ISMAIL CELIK ◽  
WEIMING ZHANG ◽  
JAMES L. SPENIK ◽  
GARY J. MORRIS
Keyword(s):  
Solid Flow ◽  
One Dimensional ◽  
Dimensional Modeling
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