Study of dual-flow internal mixing nested wind quenching nozzle structure atomization performance using CFD

被引：0

作者：

Tian, Zixi ^{[1
]}

Qing, Shan ^{[1
]}

Wang, Mingyue ^{[2
]}

Zhang, Xiaohui ^{[1
]}

Huang, Xiaoyu ^{[1
]}

Wang, Xinyang ^{[3
]}

机构：

[1] Kunming Univ Sci & Technol, Fac Met & Energy Engn, Kunming 650093, Peoples R China

[2] Zibo Special Equipment Inspect Inst, 46 Tianhong Rd, Zibo 255000, Peoples R China

[3] Southwest Jiaotong Univ, Hope Coll, Chengdu 610000, Sichuan, Peoples R China

来源：

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER | 2025年 / 161卷

基金：

中国国家自然科学基金;

关键词：

Dual-flow internal mixing nested nozzle; Spray characteristics; Spray angle; CFD simulation; Factors; EXTERNAL SPRAYING SYSTEM; AMBIENT-PRESSURE; LAVAL NOZZLE; CONE ANGLE; SWIRL; SLAG; PARAMETERS;

D O I：

10.1016/j.icheatmasstransfer.2024.108534

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In the air-quenched copper slag process, molten copper slag is injected through a nozzle into fine particles using high-speed airflow, facilitating rapid cooling and solidification. This method effectively controls the particle size of the slag particles and recover the waste heat resources. However, the atomization performance of the nozzle requires further enhancement to meet the process requirements. Therefore, in this study, the VOF method was used to numerically investigate three double-flow inner-mixed nested air-quenching nozzles with varying structures and diameter ratios. The analysis focused on the effects of nozzle diameter on spray morphology, velocity, mass flow rate, and angle were analyzed under 0.2-2 MPa pressure. The study found that when the nozzle diameter is 12 mm and the pressure is 1.6 MPa, the atomization performance of nozzle A is the optimal, with the optimal particle diameter accounts for 68.83 %, which significantly enhanced particle size uniformity and production efficiency. The effectiveness of the nozzle optimization design was verified using SEM-EDS and XRD techniques. The optimized nozzle significantly improved the atomization efficiency and particle size distribution. This study enriches the theoretical application of internal mixing nozzles and provides a valuable reference for nozzle design and optimization.

引用

页数：12