Hydrodynamic and Mass Transfer Performance of Bilayer Fixed Valve Tray

2011 ◽  
Vol 225-226 ◽  
pp. 107-110
Author(s):  
Lan Yi Sun ◽  
Ru Jun Wang ◽  
Cheng Zhai ◽  
Qing Song Li
Keyword(s):  
Mass Transfer ◽  
Pressure Drop ◽  
Simple Structure ◽  
High Efficiency ◽  
High Capacity ◽  
Low Pressure ◽  
Transfer Performance ◽  
Valve Tray ◽  
Sieve Tray ◽  
Wide Operating

Fixed valve trays have the advantages of low pressure drop, high efficiency, anti-fouling, simple structure, low manufacture cost and long runtime and therefore have been widely used abroad. This paper presents a new bilayer fixed valve (BFV) tray which has some improvements on traditional fixed valve trays. The hydrodynamic and mass transfer performance of BFV tray, sieve tray and F1 valve tray was experimentally studied with air-water-oxygen system in a 1.2m column. The results showed that the BFV tray possesses low pressure drop, high capacity, wide operating range and high efficiency.

scholarly journals A distillation tray with high efficiency and excellent operating flexibility for viscous mixture separation

2014 ◽  
Vol 20 (2) ◽  
pp. 223-231
Author(s):  
Qunsheng Li ◽  
Manxia Zhang ◽  
Zhigang Lei ◽  
Xiaofei Tang ◽  
Lun Li ◽  
...  
Keyword(s):  
Pressure Drop ◽  
High Efficiency ◽  
High Viscosity ◽  
Valve Tray ◽  
Cold Model ◽  
Sieve Tray ◽  
Mixture Separation ◽  
Water Oxygen ◽  
Tray Efficiency ◽  
Better Than

The flow-guided sieve-valve tray(FGS-VT)with high efficiency was designed to overcome the shortcoming of low operating flexibility of the flow-guided sieve tray. Its dimensions and geometry, as well as structure characteristics, were presented. The hydrodynamics and mass transfer performance, including dry-plate pressure drop, wet plate-pressure drop, weeping, entrainment and tray efficiency, of two types of FGS-VTs (FGS-VTs with 14 and 8 valves, respectively) and one flow-guided sieve tray were tested in an air-water-oxygen cold model experiment with a 0.6 m diameter plexiglass column. The results demonstrate that FGS-VT with 14 valves works better than FGS-VT with 8 valves, and in comparison with the flow-guided sieve tray, the flow-guided sieve-valve tray with 14 valves has higher tray efficiency, bigger operating flexibility, and lower wet-plate pressure drop (when all the valves are opened fully).Additionally, two typical applications to separate the mixture with high viscosity, solid, powder, easy-to-foam or easy self-polymerization components proved the unique advantages of FGS-VT.

Hydrodynamic and Mass Transfer Performance of Enhanced Jet Tray

2011 ◽  
Vol 219-220 ◽  
pp. 697-700
Author(s):  
Jun Li ◽  
Lan Yi Sun ◽  
Zhan Hua Ma ◽  
Sha Xue ◽  
Yang Dong Hu
Keyword(s):  
Mass Transfer ◽  
Pressure Drop ◽  
Internal Diameter ◽  
Transfer Performance ◽  
Sieve Tray ◽  
Hydrodynamic Parameters ◽  
Oxygen System ◽  
Water Oxygen ◽  
Steel Column ◽  
Stainless Steel Column

In order to satisfy the revamping of refinery and chemical equipments, a new kind of tray, enhanced jet tray (EJT), was presented. The hydrodynamic and mass transfer performances of EJT and new vertical sieve tray (New VST) were investigated with air-water-oxygen system in a stainless steel column of 1200mm internal diameter. Correlations of hydrodynamic parameters such as pressure drop, weeping and entrainment of EJT were obtained. The experimental results show that EJT has lower pressure drop, fractional weeping, entrainment and higher efficiency compared with New VST because of its special geometry characteristics.

Development of composite filters with high efficiency, low pressure drop, and high holding capacity PM2.5 filtration

2019 ◽  
Vol 212 ◽  
pp. 699-708 ◽  
Author(s):  
De-Qiang Chang ◽  
Chi-Yu Tien ◽  
Chien-Yuan Peng ◽  
Min Tang ◽  
Sheng-Chieh Chen
Keyword(s):  
Pressure Drop ◽  
High Efficiency ◽  
Low Pressure

scholarly journals Designed porous milli-scale reactors with enhanced interfacial mass transfer in two-phase flows

2017 ◽  
Vol 2 (2) ◽  
pp. 137-148 ◽  
Author(s):  
Aditi Potdar ◽  
Lidia N. Protasova ◽  
Leen Thomassen ◽  
Simon Kuhn
Keyword(s):  
Mass Transfer ◽  
Pressure Drop ◽  
Packed Bed ◽  
Transfer Performance ◽  
Two Phase Flows ◽  
Two Phase ◽  
Reduced Pressure ◽  
Packed Bed Reactors ◽  
Interfacial Mass Transfer

Designed porous milli-scale reactors with enhanced mass transfer performance and reduced pressure drop compared to conventional packed bed reactors.

Hydrodynamic Behaviour and Mass Transfer Performance of SiC Foam

2010 ◽  
Vol 8 (1) ◽  
Author(s):  
Julien Leveque ◽  
David Rouzineau ◽  
Michel Prevost ◽  
Michel Meyer
Keyword(s):  
Mass Transfer ◽  
Pressure Drop ◽  
Water System ◽  
Theoretical Plate ◽  
Specific Area ◽  
Ceramic Foam ◽  
Transfer Performance ◽  
Hydrodynamic Behaviour ◽  
F Factor ◽  
Total Reflux

This work presents an experimental study of hydrodynamic behaviour and mass transfer performance of ceramic foam (SiC) as column packing. Voidage of the foam studied is of 91% with 640 m2/m3 specific area and 5 PPI. Hydrodynamics experiments are realised with air-water system in counter current in a 150 mm diameter column with a packing height of one meter. Parameters studied are pressure drop for dry and wet packing, flooding and liquid hold-up. Total reflux experiments with n-heptane/cyclohexane mixture were carried out in a distillation column at atmospheric pressure to study mass transfer by determination of HETP (Height Equivalent to Theoretical Plate). The performance in terms of pressure drop per unit height and flooding are quite lower in comparison with classical packings of distillation. The pressure drop obtained is about few millibars per meter (0-10 mbar.m-1) for F-Factor from the range of 0 to 1 and liquid superficial velocities from 1 to 10 m3m-2h-1. Liquid hold-up values, measured in the same range of flow, are in a range of 5 to 10%. The possible application of foam as a packing for distillation is so demonstrated.

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