大型塔板液体等停留时间分布的研究(Ⅰ)--实验测试方法和液流分布模式分析

大型塔板上液体的不均匀流动会严重降低塔板效率，液体等停留时间分布能直接反映咎板上液体的不均匀流动状况和真实流动特性，能由等停留时间分布预测塔板效率，并据此提出改善塔板效率的措施．介绍了测试大型塔板上液体等停留时问分布的四类方法：摄像法、电导法、光纤法和温度示踪法，评价了各类方法的优缺点，并综述了单溢流塔板、双溢流塔板、DJ塔板和导向筛板四种具有代表性塔板的液体等停留时间分布曲线．认为由于DJ塔板与导向筛板采用了合理的改进措施，使得液流分布更均匀．     

降液管优化设计及操作性能研究进展

综述了进行降液管结构优化的几个方面：改变降液管裙体形状以改善流型；合理选择降液管底隙，改造进口堰，强化入口面积．论述了结构优化后几种降液管的形式及具有特殊降液管的几种塔板：倾斜降液管、月牙形降液管、FRI塔板、MD塔板等．同时详细论述了降液管操作性能的研究进展．     

德国瓦楞纸板及其容器测试

分析介绍了德国包装用瓦楞纸板的几个重要测试性能,同时对在超级市场所用瓦楞纸板小托盘的测试做了详细的介绍,还对德国瓦楞纸箱的压力试验进行了简述。这些测试方法与结果评定对我国包装业有一定的参考价值。     

旋流板塔煤浆法烟气脱硫研究

煤浆法烟气脱硫是以煤浆洗涤含二氧化硫的烟气,二氧化硫溶于浆液形成亚硫酸,煤中黄铁矿与亚硫酸、氧气发生反应,亚硫酸被氧化为硫酸,从而实现烟气脱硫.反应过程中,煤中的黄铁矿硫也被转化为硫酸而浸出,反应产生的Fe3＋/Fe2＋又对脱硫反应起到了催化剂的作用.以旋流板塔为吸收设备,研究了煤浆法烟气脱硫过程中浆液温度、液气比、空塔气速及浆液固液比等操作参数对脱硫率的影响规律.试验表明,在其他条件不变的情况下,适当提高液气比、空塔气速及浆液固液比均有利于提高脱硫效果.随着烟气脱硫过程的进行,脱硫浆液中的总铁含量不断增加,说明煤中黄铁矿被不断浸出,故此法在脱除烟气中的二氧化硫的同时也降低了煤中黄铁矿硫含量.     

板式塔的雾沫夹带现象分析

本文对板式塔操作中的雾沫夹带现象进行了讨论。并以筛板塔和浮阀塔的雾沫夹带为重点进行了分析。     

利用Trap机制实现网络故障实时监听

针对“集团军（师）防空作战指挥系统通信网络系统的故障诊断”，利用系统托盘技术和多线程技术，数据库技术，在WindowsNT4.0下，利用SNMP协议，采用VisualC 6.0实现Trap故障实时监听子系统。     

自动化流水线的兼容式计量托盘的研究

自动化流水线检定系统已在国内得到广泛的应用,可实现对智能电能表、采集终端的自动化批量检定。针对现有自动化检定流水线占地面积大、投资成本高以及设备利用率低的问题,设计了一种能同时兼容三相直接接入式电能表、三相经互感器式电能表、集中器I型、专变采集终端Ⅲ型四种计量器具的计量托盘,使一条自动化流水线上能同时进行不同类型的被检器具的检定,满足了流水线被检器具的多样性,同时大大提高了计量托盘的使用率和自动化检定流水线的工作效率,该设计可操作性强,使用方便,具有很好的应用前景。     

Hydrodynamics performance and tray efficiency analysis of the novel vertical spray packing tray

Column setup has been widely utilized in the petroleum and chemistry industries. However, with the fast progress of industries and the increasingly serious energy shortage, designing a new column setup with better performance and higher capacity becomes more urgent. In order to improve column's capacity and expand operating condition, a new type of column tray named novel vertical spray packing (NVSP) tray was designed and experimented. The performances of the novel tray, including pressure drop, weeping, entrainment and tray efficiency, were tested in a plexiglass column. In addition, performances of the novel tray were compared with that of the sieve tray and the Glitsch V1 valve tray. Based on the experiment data, the mathematical correlations of pressure drop, weeping and entrainment for the novel tray were established by regression analysis method. A fundamental model of dry pressure drop of the novel tray was promoted at the form of sum mode. The results indicate that the novel tray has wider operating condition and better performance.     

浅析用DL型塔盘改造一吸塔

通过对DL型塔盘的应用介绍 ,降低一吸塔的热负荷 ,以达到减小回流氨添加量 ,便于高负荷下一吸塔的操作 ,最终达到提高氨加工能力     

Cable tray FIRE tests simulations in open atmosphere and in confined and mechanically ventilated compartments with the CALIF3S/ISIS CFD software

Fire hazard in nuclear power plants (NPPs) is particularly often investigated as potential cause of safety equipment failure and confinement loss. Many fire events recorded in NPPs involve electric cables, widely used throughout facilities. IRSN is developing the CALIF3S/ISIS computational fluid dynamics software devoted to fire simulation in large‐scale confined and mechanically ventilated compartments. This paper presents two aspects of the CALIF3S/ISIS code ability to simulate fires. The first one concerns vertical and horizontal spreading of a cable tray fire in open atmosphere using an approach based on the FLASH‐CAT cable fire spread model. Resorting to the suitable parameters of the FLASH‐CAT model based on video fire analyses of tests enables to properly compute the heat release rate of the fire. The second aspect concerns the ability to simulate the evolution and consequences of fires in confined and mechanically ventilated compartments. For these cases, the heat release rate measured during the corresponding experiment is used as input data for the calculations. The predicted evolutions of pressure or gas temperatures are in relatively good accordance with the experiments. The major discrepancy concerns gas concentrations in the fire room which is attributed to a lack of information about the properties of the fuel material.