大通量导向筛板与BHSⅡ型高效填料的研究与应用

介绍了大通量导向筛板与BHSⅡ型高效填料在工业上甲醇精馏塔技术改造中的应用,阐述了其结构特点,研究了其操作性能。用先进的化工过程模拟软件对改造方案进行了计算机模拟与优化,在优化方案的基础上完成了技术改造。结果表明,大通量导向筛板与BHSⅡ型高效填料的结合应用和原泡罩塔板相比,生产能力是原来的近两倍,分离效率明显提高,而能耗则显著降低。     

高效导向筛板在 PVA装置回收一塔的应用

分析了某公司PVA生产装置回收一塔处理能力不足的原因。介绍了高效导向筛板的工作原理和特点,并把高效导向筛板与浮阀塔板进行了比较。用高效导向筛板改造回收一塔,PVA装置产量可增至30kt／a,并降低原材料、蒸汽消耗。     

新型高效导向筛板的研究与应用

对高效导向筛板的结构进行改进和优化,开发出新型高效导向筛板.介绍了高效导向筛板实验研究内容和方法,以及工业应用实例.应用表明,高效导向筛板具有生产能力大、分离效率高、板压降低、抗堵性能好、塔板造价低等优点.     

高效导向筛板塔的研究及其在化工生产中的应用

介绍了高效导向筛板技术的原理、持点及其在化工中的应用。一般来说，高效导向筛板比传统塔扳的生产能力高50％～100％，分离效率高20％-40％，塔压降低10％～30％，造价相当于泡罩塔板的40％、浮阀塔坂的60％，并且抗堵性好、结构简单、拆装方便，在化工、石化等行业中得到很好的应用，提高了装置的技术指标和经济效益。     

高效导向筛板在26万t/a聚氯乙烯低沸精馏塔中的应用

基于26万t/a聚氯乙烯低沸塔板分离能力低下,介绍了大通量导向筛板在聚氯乙烯低沸精馏塔技术改造中的应用,分析了其结构特点,研究了该筛板操作性能.用化工过程模拟软件对改造方案进行了计算机模拟与优化,在优化方案的基础上对设备进行了改造.结果表明,大通量导向筛板和原传统塔板相比,生产能力、分离效率均有明显提高,而能耗显著降低.     

高效导向筛板在26万t/a PVC高/低沸塔精馏中的应用

介绍了大通量导向筛板在氯乙烯精馏技术改造中的应用,阐述了其结构特点,研究了其操作性能。用先进的化工过程模拟软件对改造方案进行了计算机模拟与优化,在优化方案的基础上完成了技改。结果表明,大通量导向筛板和原传统塔板相比,生产能力、分离效率明显提高,能耗显著降低,增加经济效益500万元/a。     

高效导向筛板的研究与应用

详细介绍了高效导向筛板的结构,指出其在机械结构上有两项改进,即导向孔和鼓泡促进器,这大大提高了塔板的性能。研究了高效导向筛板的加工过程及分离效率,并给出了其在PVC工业中的应用实例。     

聚氨酯橡胶筛板在选煤工业中的应用及发展前景

本文简单介绍了我国选煤工业概况，聚氨酯筛板的生产工艺、性能、特点。详细介绍了山西省化工研究所生产的聚氨酯筛板在洗煤厂的应用     

导向固定阀型塔板上气液传质性能的研究

在化工生产中,精馏过程是决定生产效率,能源消耗,产品质量的重要环节,而塔嚣尤其是塔板性能的优劣,直接影响着精馏过程.本文主要介绍了一种新型塔板--导向固定阀型塔板,并将其安装在φ600mm有机玻璃塔内,通过测量进出塔板的溶氧水中氧气浓度,计算出单板效率,并与北京化工大学开发的高效导向筛板的单板效率进行了比较,对工业应用具有指导意义.     

聚氨酯筛板的结构与应用

重点介绍聚氨酯筛板的几种安装结构、性能、特点及应用范围。聚氨酯筛板已广泛应用于选煤、送矿、化工物料的筛选等方面，与以前所用的金属筛网相比具有耐磨损、吸振消声、筛孔不易堵塞、筛板结构合理、拆装方便、耐水、耐腐蚀等特点。     

Performance and applications of flow-guided sieve trays for distillation of highly viscous mixtures

With a particular focus on the distillation of highly viscous or self-polymerized mixtures, this study reports the hydrodynamic and mass transfer performance of two flow-guided sieve trays, including their pressure drop, entrainment, weeping and tray efficiency, obtained experimentally with an air-water/oxygen system in a Φ600 mm plexiglass column. The results show that the 8 mm hole flow-guided sieve tray tested shows better characteristics than the 7 mm flow-guided hole tray in terms of pressure drop and mass transfer. Then we present practical industrial examples of applications of the flow guided trays for distillation of viscous mixtures, i.e., the separation of vinyl acetate (VAC) from a polyvinyl acetate (PVAC) polymer solution with dynamic viscosity μ=50,000 mPas, the separation of highly unsaturated C5 mixtures by extractive distillation, and the distillation of thick, condensed and highly viscous fermentation mixtures made from fermented mash. It is demonstrated that flow-guided sieve trays with relatively large holes are an excellent candidate for distillation of mixtures with suspended solids, or concentrated/self-polymerized polymer solutions.     

Hydrodynamics and mass transfer performance analysis of flow-guided trapezoid spray packing tray

Distillation is the most common separation technology utilized in the petroleum and chemistry industries. Due to the wide usage of the distillation column, even a small improvement in performance may result in significant energy cost savings. Aiming to improve the hydrodynamics and mass transfer performance, the flow-guided trapezoid spray-packing tray (FTS-PT) was designed by combining flow-guided holes and trapezoidal caps with structured packing. And the experimental measurements of the FTS-PT, including pressure drop, clear liquid height, weeping, entrainment, and tray efficiency, were conducted in a 500 mm diameter plexiglass column with the air-water-oxygen system. Moreover, the performance of the FTS-PT was compared with that of new vertical sieve tray (New VST) and F1 valve tray. The results show that FTS-PT has a significant advantage in pressure drop, entrainment, and capacity. Furthermore, the calculation model of the pressure drop was derived and used for the FTS-PT with a relative deviation of less than 5%.     

高粘度物料精馏的研究与应用

研究了高粘度物料精馏的特点与解决方法,对大塔径（2000mm),低板间距（285mm),高粘度（10－50Pa.s)物料的精馏过程,采用新型导向筛板替代原泡罩塔板进行改造。在计算机上研究了精馏工艺优化方案,工程上合理排布导向孔与塔板分块。技术改造达到了扩产,节能,提高产品质量与回收率,稳定生产的目的：技术设备投资仅22万元,年增经济效益321万元,投资回收期不足22天。     

乙酸乙烯精馏过程的模拟优化与工业应用

利用化工流程模拟软件对乙酸乙烯精馏过程进行模拟优化,通过模型对比得到了适用于计算该物系的物性方法;分析了各工艺参数对分离过程的影响,得到了最佳进料板位置、回流比和采出量。同时在原有塔体不变的情况下,利用高效导向筛板对乙酸乙烯精馏过程进行改造,并得到了工业应用。改造后工厂的运行结果表明,结合计算机优化的高效精馏技术能有效地提高产品纯度,降低原料和能量消耗,从而取得了很好的经济效益。     

宝塔罩型塔板性能研究

开发了一种宝塔罩型塔板。该塔板是在塔板上设置数个由板孔、升气筒、塔型罩、进液孔所构成的豆塔罩单元，在单元内气液呈喷射状态接触，实现两相传热传质。流体力学性能和传质性能研究证明：该塔板压降、氧解析效率、漏液等性能与新型垂直筛板相当，但雾沫夹带要比新型垂直筛板低。因而该塔板具有较大的生产处理能力和较宽的稳定操作范围。     

新型固定阀塔板的流体力学和传质性能研究

提供了一种阀盖两侧具有向下弯曲折边的新型固定阀。在内径为500mm的有机玻璃塔内,以空气水为物系,研究了其流体力学性能;在内径为300mm的不锈钢塔内,以乙醇水为物系,常压全回流情况下,研究了其传质性能。研究结果表明:新型固定阀塔板的板压降略高于筛孔塔板,比F1 浮阀塔板小得多,雾沫夹带量小,雾沫夹带液泛点阀(筛)孔动能因子均比筛孔塔板、F1 浮阀塔板大,漏液量较小,漏液点阀(筛)孔动能因子比筛孔塔板低,比F1 浮阀塔板高,传质效率与F1 浮阀塔板相当。     

Flow-guided sieve-valve tray (FGS-VT) – A novel tray with improved efficiency and hydrodynamics

Flow-guided sieve tray (FGST) has been widely used as column internal for mass and energy transfer between gas and liquid, or liquid and liquid, due to its low pressure drop, high efficiency, and high capacity. But as sieve tray, improving the operation flexibility is the urgent task which has to be resolved. Flow-guided sieve-valve tray (FGS-VT) was designed to overcome the shortcoming of FGST by putting some valves onto the FGST, which do not change the original structure before the valves are open. Comparison of the hydrodynamic and mass transfer performances of FGS-VT, FGST, and Glitsch V1 valve tray was done, using air–water–oxygen system in a 0.6 m diameter plexiglass column, and the mathematical model of dry-plate pressure drop for FGS-VT was established. The results showed that the FGS-VT has higher operation flexibility and tray efficiency than FGST and Glitsch V1 valve tray.