Dissertation > Excellent graduate degree dissertation topics show

Study on the Equipment Technology for the Preparation of Fuel Cell Catalyst Slurry

Author: BaiWenTian
Tutor: TuShanDongï¼›YuXinHai
School: East China University of Science and Technology
Course: Chemical Process Equipment
Keywords: Fuel cell high-shear ultrasonic dispersion PIV simulation
CLC: TM911.4
Type: Master's thesis
Year: 2012
Downloads: 34
Quote: 0
Read: Download Dissertation

Abstract


In this thesis, the combination of the high-shear and ultrasonic dispersion technique was raised to solve the problems which exists in the preparation of the Fuel Cell catalyst slurryThe basic dispersion mechanisms of the Fuel Cell catalyst slurry and the stator-rotor high-shear mixer were analyzed. Then, PIV technique was employed to visualize the velocity field of the stator-rotor high-shear mixer and based on the results and large eddy PIV theory, the kinetic energy dissipation rate was estimated. The CFD software-FLUENT was used to simulate the flow in the stirred tank. The velocity filed obtained agrees well with the PIV results. Further, the critical flow area that cannot be observed by PIV was analyzed. Finally, according to the experiment and simulation results, a specialized mixing equipment for Fuel Cell catalyst slurry was designed and the dispersion performance of the equipment was tested. TEM and laser particle size analyzer were used to characterize the slurry.It was found that the knock-on effect between the jet and the stator plays the most significant role in the nano-particle dispersion, followed by the high-shear effect and cavitation effect. The mechanism of ultrasonic dispersion is cavitation effect, which make the slurry fludization. The average particle size of the slurry prepared by the combination of high-shear and ultrasonic technique is smaller and the surface area bigger. The equipment has passed the actual productive tests and fully satisfied the technical requirements.

Related Dissertations

  1. The Setting Bases of Working Pressure in LNG Systems and Orthogonal Experiment Design of Heat Exchangers,TQ051.5
  2. Study on Springback of High-Strength Steel Stamping,TG386
  3. Numerical Simulation and Experiment on Hydroforming of Cups with Controllable Radial Pressure,TG386
  4. Research on Technology and Mechanism of Joining Cemented Carbide to Carbon Steel,TG454
  5. The Brake Performance of Hydraulic Retarder and Simualtion Research on Its Application for Aircraft Arrestment,TH137.331
  6. Satellite Attitude Determination Based on Gyro and Star Sensor,V448.2
  7. Numerical Simulation of Film Cooling in Turbine Cascade with Non-Axisymmetric Endwall Method,V231.3
  8. Research on Orbital Control Method for Space Rendezvous and Docking,V526
  9. High Speed Aerodynamic Convection and Coupled Heat Transfer of Complicated Bodies,V215.4
  10. The Analysis on Characteris of Vibration Source about Vertical Vibration of Surrounding Environment Induced by Rail Transit,U211.3
  11. Simulation Analysis on Temperature Stress of RCC Arch Dam and Its Construction Joints Design Research,TV642.2
  12. Study on the Heat Transfer Characteristics of Particle Cluster in Circulating Fluidized Bed,TK124
  13. Numerical Simulation of SNCR Process of a 600MW Utility Boiler,TK222
  14. Numerical Simulation of Biomass Direct Reburning,TK16
  15. Numerical Simulation on Pulverized Coal Combustion Process in a 670T/H Tangential Firing Furnace,TK224.11
  16. Numerical Simulation on the Combustion Process in the Furnace of a 1000MW Lignite-Fired USC Boiler,TK224.11
  17. Study on Gas-Solid Two-Phase Flow in Spouted Beds,TK173
  18. Experimental Study and Numerical Simulation on Aerodynamic Field of Tangential Bias Swirl Burner,TK223.23
  19. Characteristic Study of Combustion in Central Reverse Flame Chamber,TK223.21
  20. Numerical Simulation and Contrastive Analysis of Labyrinth Seals and Leaf Seals,TK263.2
  21. Infrared Imaging Target Simulation Resistance Array Control System Development,TJ765.4

CLC: > Industrial Technology > Electrotechnical > Independent power supply technology (direct power) > Chemical power sources,batteries, fuel cells > Fuel cell
© 2012 www.DissertationTopic.Net  Mobile