Dissertation > Excellent graduate degree dissertation topics show

Effect of Packing Density on Performance of Novel Hollow Fiber Membrane Contactors

Author: RenDanPing
Tutor: ZhangGuoLiang
School: Zhejiang University of Technology
Course: Environmental Engineering
Keywords: Packing density hollow fiber membrane contactor methanol-water mass transfer
CLC: TQ028.31
Type: Master's thesis
Year: 2009
Downloads: 8
Quote: 0
Read: Download Dissertation


Hollow fiber contactor is a kind of new separation apparatus which has many advantages including wider operation range, higher separation efficiency, independent flow between liquid and gas. Many researches focused on membrane contactor’s structural factors and mass transfer in recent years. Polypropylene hollow fiber membranes were used as novel structured packing in distillation of methanol-water solutions to investigate the effect of fiber packing density in this paper.Distillation experiments were carried out with three modules whose packing densities ranged from 4.7 % to 19 %. Results showed that all the contactors with different packing densities worked well above the limit where flooding normally occurs in conventional cases. Distillate concentration from membrane contactors with the packing density of 4.7% or 19% was bigger than that of 9.5%. Experimental Sherwood number was smaller than calculated Sherwood number at low packing density, but bigger at high packing density. It was also found that higher Reynolds number yielded better shell-side mass transfer. The Sherwood Numbers at high packing density were smaller than those at low packing density. The resistance of vapor decreased with the increasing of F factor. The higher the packing density was, the bigger the resistance of vapor would be. The resistance in the liquid was responsible for more than half of the total resistance. Overall mass transfer coefficients KG decreased rapidly with increasing packing density and the maximal KG value could reach as big as 391.84×10-5 m/s.

Related Dissertations

  1. The Computer Simulation of Roller Drying for Flaky Agriculture Materials,S226.6
  2. The Drying of Tilapia Fillet Using Supercritical Carbon Dioxide,TS254.4
  3. Hot air drying characteristics of lettuce osmotic dehydration mass transfer kinetics and permeability,TS255.52
  4. Biomass Transfer Study in Cyro-perservation of Cells,R318.52
  5. A Numerical Study of Longitudinal Vortex Induced Enhancement of Mass Transfer in a Membrane Channel,TQ021.4
  6. The Impact of Mass Transfer Effects on the TiO2 Photocatalytic Material in the Flow State of Water,X703
  7. Study of Gas-Liquid Mass Transfer Enhanced by Nanofluids,TB383.1
  8. PDMS/PAN Hollow Fiber Composite Membrane for Methanol-Water Separation,TQ028.8
  9. Research on High Effective Utilizations of Water Evaporative Cooling Technology Based on Exergy Analysis of Virtual Cycles,TU831
  10. Mass Transfer Enchancement in Hollow Fiber Membrane Contactor Shell-Side with Additive,TQ051.8
  11. Effects of Physical Chemical Properties of PES/PS/PP Hollow Fiber Membrane Contactors Used as Structured Packings on Isopropanol/Water Distillation,TQ028.31
  12. Study on the Shell-side Mass Transfer of Hollow Fiber Renewal Liquid Membrane,TQ028.8
  13. Certain types of inverse problem of the nonlinear parabolic equation,O175.26
  14. Preparation and Characterization of Mesoporous Mordenite,O643.36
  15. Experimental Research on Marangoni Convection in the Gas-Liquid Mass Transfer with PIV,TQ021.4
  16. Experimental Study on Marangoni Effect on the Gas-Liquid Mass Transfer Process,TQ021.4
  17. Bottom blowing high pressure nitrogen Experimental Study of High Nitrogen Steel Metallurgy,TF763.1
  18. Cantor centralized approach can be a good measure of the nature of point sets,O156.7
  19. Study of the Characteristics on G-S Magnetically Stabilized Fluidized Bed under Elevated Pressure,TQ051.1
  20. Three-dimensional Simulation Study on PEMFC Heat and Mass Transfer,TM911.4

CLC: > Industrial Technology > Chemical Industry > General issues > Chemical processes ( physical processes and physical and chemical processes ) > Separation process > Single-phase system liquid mixture separation process > Distillation and rectification
© 2012 www.DissertationTopic.Net  Mobile