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     

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.     

旋流板上流场的LDA实验研究

在φ３００ｍｍ塔内，实现了用二维激光多普勒测速仪对旋流板上气体速度场的测定，获得了不同高度剖面的切向、轴向及径向速度分布的数据，探明了板上气流场的基本特点；还采用气－固流模拟湿板操作，测定了模拟液滴的流场。实验结果证实了旋流板的传统设计思想。     

筛板不均匀漏液的规律及其影响

筛板不均匀漏液的规律及其影响曾爱武刘富善许松林黄洁余国琮（天津大学化学工程研究所，天津３０００７２）关键词筛板不均匀漏液塔板效率１引言塔板漏液是一种导致塔板效率降低的纵向返混。在工程设计中通常以相对漏液１～１０％来决定气相负荷下限，但值得指出的...     

垂直筛板构件强化SDS在泡沫分离液相吸附的研究

为提高表面活性物质在泡沫分离液相的吸附,开发了一种液相安装垂直筛板构件的新型泡沫分离塔,以传统液相无构件的泡沫分离塔为对照塔,十二烷基硫酸钠(SDS)为体系,考察了装有垂直筛板构件的塔板层数、板间距和垂直帽罩数对气泡大小、SDS吸附密度和平衡时间的影响。结果表明在液相添加垂直筛板构件能有效增加SDS的吸附密度并缩短平衡时间。在塔板层数为5、板间距为60 mm和垂直帽罩数为4时,SDS吸附密度比对照塔提高58.8%。     

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.     

合成氨净化系统改造总结

针对金信化工有限公司合成氨净化系统存在的问题．采用新技术对脱碳液过滤器、净化气水冷器、变换气脱硫塔及熔硫釜等设备或工艺进行了改造，取得了满意的效果。     

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。     

基于非接触IC卡电池托盘的电池综合特性自动测试分选系统

在锂离子电池的生产过程中,需要对锂离子电池的电压、放电容量、内阻、电压自放电率等电池特性参数范围进行测量和分选,以作为对锂离子电池进行品质分选的依据。常规的锂离子电池测试设备只可以测量和分选电池容量;常规的内阻测试仪只可以测量和分选电池内阻;常规的自放电率检测仪[1]只可以测量和分选电池电压、自放电率。如果需要测量电池的全部特性参数,就必需在多种设备上轮流测量,费时费力,效率极低。研究了一种新型的电池综合特性管理系统,电池电压、容量、内阻、自放电率等综合特性参数的测试都在同一个系统上同时完成。测试完成后,通过系统的电池分选仪进行快速、准确的分选。     

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.