Comprehensive numerical assessment of molten iron-slag trickle flow and gas countercurrent in complex coke bed by Eulerian-Lagrangian approach

被引：13

作者：

Natsui, Shungo ^{[1
]}

Tonya, Kazui ^{[2
,4
]}

Hirai, Azuma ^{[3
]}

Nogami, Hiroshi ^{[1
]}

机构：

[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Katahira 2-1-1, Sendai, Miyagi 9808577, Japan

[2] Hokkaido Univ, Fac Engn, Kita Ku, N13-W8, Sapporo, Hokkaido 0608628, Japan

[3] Tohoku Univ, Grad Sch Engn, Aoba Ku, 2-1-1 Katahira, Sendai, Miyagi 9808577, Japan

[4] Onahama Smelting & Refining Co Ltd, Fukushima 9718101, Japan

来源：

CHEMICAL ENGINEERING JOURNAL | 2021年 / 414卷 / 414期

基金：

日本学术振兴会;

关键词：

Trickle flow; Ironmaking; Coke bed; Particle-based smoothed particle hydrodynamics; Discrete-element method; Eulerian-Lagrangian coupling; PACKED-BED; 2-PHASE FLOW; FLUID-FLOW; PORE-SCALE; PARTICULATE SYSTEMS; LIQUID SLAGS; HOLD-UP; SIMULATION; SPH; DEM;

D O I：

10.1016/j.cej.2021.128606

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The transient behavior of immiscible two-liquid interfaces initiated by molten iron-slag trickle flow was investigated using a Lagrangian particle-based smoothed particle hydrodynamics (SPH) model to track the movements of both liquid phases directly. The transient behavior of the associated gas flow was simulated using a Eulerian grid-based model dependent on the gas permeability characteristics exhibited by the molten iron-slag counterflow. As an example of the assessments conducted, the sliding behavior of molten iron down the slag surface at different between-phase interfacial tensions was observed in the unsteady state. While the effect of wetting between the molten slag and coke on the gas flow was found to be insignificant, decreasing the liquid-liquid interfacial tension promoted mixing between the two liquids, which in turn hindered the rapid dropping of the molten iron and resulted in a significant stagnation of gas flow.

引用

页数：18

共 90 条

[11]

Carman P.C., 1956, FLOW GASES POROUS ME

[12] A coupled discrete droplet and SPH model for predicting spray impingement onto surfaces and into fluid pools [J].