双室工频感应炉的研制

介绍了双室工频感应炉的工作原理,炉子主要结构及其技术特征。     

Numerical analysis on thermal regime in double-loop channel inductor

In order to investigate the temperature distribution, a three-dimensional finite element model (FEM) was developed to simulate the temperature regime in the channels of double-loop inductor, and the simulated results were compared with experimental data from low load trials of a 400 kW inductor. The results of numerical simulations, such as the temperature and Joule heating rate, show reasonable correlation with experimental data. The results indicate that Joule heating rate and the temperature reach the maximum at the corners and the minimum at the centre of the cross-section area. The temperature difference between the inlet and outlet is in an inverse proportion to mass transport. Joule heating rate and the temperature are directly proportional to power frequency. It is concluded that mass transport and power frequency play a critical role in determining the temperature regime and Joule heating rate, the relative permeability of the magnetic core shows no significant influence on temperature regime and Joule heating rate, when the relative permeability varies from 5 000 to 10 000.     

Numerical analysis on Joule heating of double-loop channel induction furnaces

In order to investigate Joule heating power, a three-dimensional finite element model (FEM) was developed to predict Joule heating power in the channels of double-loop inductor. The simulated results were compared with experimental data from low load trials for a 400 kW inductor. The results, such as power factor and Joule heating power, show reasonable correlation with experimental data, and Joule heating rate reaches the maximum at the corners and the minimum at the centre of the cross-section area. With increasing relative permeability of iron core, length of coils, current frequency and resistivity of metal melt, the power factor and Joule heating power change. It is concluded that current frequency, the resistivity and length of the coil play a critical role in determining the power factor and Joule heating power, whereas relative permeability of the magnetic core shows no significant influence on them.     

短流程电炉还原熔炼锌粉用多通道炉气分配器

由于含锌炉气冷凝的特殊性,单台冷凝器能力受到限制,制约短流程电炉还原熔炼锌粉生产工艺装备朝大型化、集约化、节能环保方向的发展.多通道炉气分配器的研制解决了这一问题,使多台冷凝器与单个电炉配置成为可能,并在实际应用中取得了良好效果.     

短流程电炉还原熔炼锌粉用多通道炉气分配器

由于含锌炉气冷凝的特殊性,单台冷凝器能力受到限制,制约短流程电炉还原熔炼锌粉生产工艺装备朝大型化、集约化、节能环保方向的发展。多通道炉气分配器的研制解决了这一问题,使多台冷凝器与单个电炉配置成为可能,并在实际应用中取得了良好效果。     

工频有心熔锌电炉感应体及逆变电源联合实验

针对国内现有熔锌感应炉呈现的低功率,小容量等问题,搭建大功率工频有心感应电炉实验平台,开发工频有心熔锌炉逆变电源,为1000 k W工频有心感应电炉的研制提供技术支持。结果表明:本次大功率感应体及逆变电源的联合实验中,当直流电压在0~403 V,对应逆变电压0~515 V,可实现连续调节,进线电压等效到750 V时,感应体功率为938 k W,为感应体设计功率1000 k W的93.8%。但是,为更好的将大功率感应体应用于生产实际中,应改进主控制板,使直流电压在0~510 V,其对应逆变电压在0~750 V范围内连续可调,此外,调整感应体的线圈匝数或提高感应体的功率因数,并采取通水冷却方式,以达到感应体的设计功率1000 k W。     

蓄热式高温空气发生器冷态实验研究

介绍了基于换向式蓄热燃烧的高温空气发生工艺，并进行了冷态实验。结果表明调节鼓风机和排烟机的开度，可调节高温空气流量，分流出口处空气流量调节范围0－0.102m^3/s，分流出口处空气压力调节为0－210Pa。     

高温低氧燃烧锅炉传热特性研究

介绍一种新型工业锅炉－高温低氧燃烧锅炉，研究其传热特性，实验研究表明，炉内燃烧火焰边界趋于消失，体积明显增大，火焰颜色变浅，无局部高温区，辐射传热得到强化，提高空气预热温度可加大炉气和水冷壁间传热，为开发推广新型工业锅炉奠定基础。     

W型大功率喷流感应炉的研制

介绍了大功率喷流感应炉的工作原理 ,炉子主要结构及其技术特征。     

高温低氧燃烧锅炉传热特性研究

介绍一种新型工业锅炉 -高温低氧燃烧锅炉 ,研究其传热特性。实验研究表明 :炉内燃烧火焰边界趋于消失 ,体积明显增大 ,火焰颜色变浅 ,无局部高温区 ,辐射传热得到强化。提高空气预热温度可加大炉气和水冷壁间传热。为开发推广新型工业锅炉奠定基础