磁分离聚氧聚氮原理性实验装置研究

为探索磁化氧氮分离技术在工程上的应用,设计了一种小型带钢毛的高梯度磁场聚氧聚氮原理性实验装置。总结了磁路设计和流路设计的优化设计规律;研究表明磁路优化设计磁极间采用斥力场,会增大磁场梯度;永磁体尺寸与磁场间空隙应保持最佳的函数关系;在磁场空间装有含铬不锈钢毛可扩大磁力范围和增强磁场梯度。流路优化设计氧氮通道截面比例应按空气中氧氮体积比;磁场分离段的气流流动应保持稳定的层流状态,应尽量减少气流阻力。

Devices studies of principle for oxygen concentration and nitrogen collection by magnetic separation

To explore the engineering application of magnetic separation of oxygen and nitrogen,a small experimental device with steel wool is designed.This device aggregates oxygen in high-gradient magnetic filed central ducted and collects nitrogen in around ducted.The paper concludes the optimization rules in magnetic circuit design and flow path design.The study shows that concentration and yield have no scaling relation of engineering proportion with the size of magnetic oxygen concentration and nitrogen collection.The effect of oxygen concentration and nitrogen collection will be better if the magnetic gradient is higher,the magnetic force is stronger and the design of magnetic circuit and flow path are better.