热电偶接触工件作为温控方式的应用

热电偶接触工件作为温控方式的原理及在工业炉温控系统中的应用。     

为祖国医学事业无私奉献的一生——悼念林贵教授

本文综述了我国目前工业炉的生产和使用情况,作者认为为推动工业炉的技术进步,必须以工业炉的节能为主题,进一步改革炉型,开发燃烧装置,研究新型耐火材料,开展余热利用和提高炉子热工控制水平。     

单片机温控器在热处理炉上的应用

介绍了单片机温控器在热处理炉上的应用,阐述了单片机温控器的工作原理、特点、软件和硬件的组成。     

工业炉窑节能的思考

从燃烧、传热的角度出发,依据热工的基本原理,对工业炉窑热量损失的各种途径进行了分析,系统地介绍了工业炉窑进行节能、改造的方法,对提高工业炉窑的热效率,节约能源,保护环境有一定的指导意义。     

智能仪表在加热炉控制系统方面的应用

概述了MZK型智能控温柜和KCS型加热炉计算机集散控制系统的功能及硬、软件组成,并介绍了连续式烘干加热炉计算机监控系统的应用实例。采用智能仪表为加热炉设备控制提供了良好的完善功能,大大提高了设备的整体技术水平。     

Thermal box-barrier for a direct measurement in high temperature environment

Thermal box-barriers (TBB) are used for the thermal protection of measuring systems during exposure in a high temperature environment of various furnaces. This paper deals with problems of TBB design. TBB characteristics and limitations are discussed. The four-layer TBB structure is proposed for the high temperature application. The computer simulation results are presented to show the typical time evolution and spatial distribution of temperature in TBB. Problems of optimum proposal of individual layers thickness are mentioned. Temperatures in the manufactured TBB measured by thermocouples during tests and applications in industrial reheating furnaces are introduced in order to verify the computational results and to show its real thermal insulation capabilities.     

工业炉炉衬材料微观剖析的试样制备方法

介绍了工业炉炉衬材料显微结构分析所用试样的制样方法,并讨论了有关注意事项,应用表明:这种方法切实可行,耐材显微结构照片质量很好,有力促进了工业炉炉衬材料的研发。     

工业炉CAD系统

本文介绍了工业炉CAD系统中辅助计算的开发以及目前所具有的功能。     

工业催化剂及其载体焙烧设备进展

焙烧几乎是所有固体催化剂及其载体制备的最后环节。焙烧温度对催化剂的结构性质、物相、晶粒大小、表面酸性以及强度、比表面、孔分布等性质具有重要影响,并最终影响催化剂的综合性能。从实验室少量焙烧到大批量的工业生产,即从小容积、温度场均匀、浓度场均匀和间歇操作的实验室焙烧装置放大到温度场和浓度场尚不十分清晰的工业焙烧设备,有必要研究设备变化的工业放大效应。在催化剂工业生产中,有微波焙烧炉、厢式焙烧炉、回转式焙烧炉、网带式焙烧炉、流态化焙烧炉、立式焙烧炉、隧道窑、梭式窑、辊道窑等多种焙烧窑炉可供选择。厢式炉不适于连续生产,网带式炉不适于高温焙烧,对于大批量催化剂的高温焙烧往往采用隧道窑和连续式回转炉。通过炉体自身的旋转,回转炉能促使物料颗粒之间的相互混合,而隧道窑则不能;回转炉炉体不漏风,物料床层截面主体温度均匀,而隧道窑中易出现窑车下部漏风、窑车自身蓄热等问题,从而引起预热段断面的上下温差;此外,隧道窑温度分布不均匀。微波炉具有加热速度快等优点,是近年来发展较快的焙烧方式。     

Meeting emission standards with high-sulfur coals

The economics of strategies for meeting sulfur oxides (SO_x) emission standards from furnaces fueled with high-sulfur coals has been assessed based on published data. The strategy of SO_x control depends on how the coal is utilized. For large power plants, flue-gas desulfurization (FGD) is preferable to conversion of coal to clean fuel. In comparison with coal conversion, the total capital and operating costs for FGD are almost an order of magnitude lower, thermal efficiencies are higher, and utility requirements are lower. Even with possible breakthroughs in coal-conversion technologies, it appears that FGD will remain the economically preferred route to desulfurization. FGD has been in commercial operation since 1968, and the reliability of the process has reached an acceptable level. For industrial furnaces, direct combustion is preferred to gasification because gasification is inherently expensive. Fluidized-bed combustion is the only viable option for clean direct combustion of coal in small industrial furnaces. Fluidized-bed combustion has reached commercial status and is economically competitive in many parts of the world. For furnaces requiring gaseous or liquid fuels, gasification to medium-Btu gas is preferred. For domestic and commercial uses, coal can be gasified to clean, low-Btu gas. This is an old process and might be amenable to cost reduction through application of new technologies. The only other economically viable approach involves the production of clean solid fuel by compounding coal with additives such as limestone and manganese nodules.