Dissertation > Excellent graduate degree dissertation topics show

Study on Hydrodynamics of Gas-liquid Two-phase Flow in Monolith Multi-channel

Author: DengZhiHua
Tutor: CaiWangFeng
School: Tianjin University
Course: Chemical Engineering
Keywords: Overall reactor Hydromechanics Gas-liquid two-phase flow Held gas Distributed
CLC: TQ021.1
Type: Master's thesis
Year: 2010
Downloads: 42
Quote: 0
Read: Download Dissertation

Abstract


The overall multi-channel is a major component of the overall reactor to be used for a variety of gas-liquid - solid heterogeneous catalytic reaction process . Compared with conventional heterogeneous reactor , the overall reactor has the advantages of bed pressure drop is small , the concentration gradient and improve mass and heat transfer . Currently, the overall reactor has been widely used in the field of environmental protection of automobile exhaust and industrial emissions of gas processing ; being studied for methanation , water gas shift , steam reforming of hydrocarbons , hydrogenation / dehydrogenation and selective oxidation , etc. process, especially in a three-phase reaction shows great potential for development . However, these studies mostly only in the laboratory level, still some distance away from industrialization . The gas-liquid distribution is a monolithic multi-channel is an important hydrodynamic parameters , mainly for holding parameters such as gas distribution in the radial direction of the overall multi- channel . Gas - liquid distribution factors include imports of gas-liquid flow , multi-channel layout and gas-liquid distribution . First established visual the hydrodynamic measurement method , the method is validated . Visualization of fluid mechanics measurement method using CCD high-speed video camera outflow channels of the Taylor bubble fluid dynamics parameters obtained by analyzing a series of bubbles picture . The results show that , compared with the conventional method , CCD high-speed camera shooting method is a non-invasive method and does not affect the overall multi-channel original internal fluid flow state . Secondly, the overall multi-channel hydrodynamic parameters were measured and analyzed . The the experiment air - water as the medium, to fill the diameter of 2-3mm glass beads 20 mm high bed of the sparger , the superficial liquid velocity of 0.144 - 0.195m / s , the superficial gas velocity of 0.040 - 0.057m / s, the gas-liquid and flows on the operating conditions , the determination of the flow parameters of the gas held in the overall multi-channel aperture 1.086mm 30mm diameter column . The results showed that held gas increases with increasing superficial gas velocity decreases with increasing superficial liquid velocity ; held gas distribution factor decreases with increasing superficial gas velocity , with the the superficial liquid velocity increases .

Related Dissertations

  1. Study on Channel Allocation of Multi-Channel MAC Protocol in Ad-Hoc Network,TN929.5
  2. Research of Fault Injection for a Distributed System,TP338.8
  3. The Research of Fault-Tolerant Techniques for Parallel/Distributed Network Simulator PDNS,TP302.8
  4. Research and Implementation of Retrieval System on Massive Mail,TP393.098
  5. Research and Design of One Kind of Paper’s QCS That Based on Embedded System,TP368.1
  6. Micro- grid with distributed power control strategy research,TM61
  7. Research of Communication Mechanism in the Distributed Network Based on Mobile Agent,TP393.02
  8. Based on Modbus Protocol pressure medical gas distribution monitoring system development,R197.39
  9. Port industrial zone planning and layout of the sewage treatment system,X703
  10. Research and Implementation of Distributed Data Integration Visual Modeling,TP311.52
  11. Research and Application of Map/Reduce Based Distributed Log Analyzer,TP311.52
  12. The Design and Implementation of Distributed Database Based on Oracle of Mobile CRBT,TP311.13
  13. Design and Implementation of Framework Control Information System Based on WCF,TP311.52
  14. Non-equilibrium Encoding Scheme of Distributed Video Coding Based on LDPCA,TN919.81
  15. Compressed Sensing Based Abnormal Events Detection in Wireless Communication Net-works,TN929.5
  16. Research on Distributed Source Coding Based on LDPC Codes,TN911.22
  17. Design and Implementation of Distributed Video Storage System,TP333
  18. Design and Implementation of Management Console of Network Backup System,TP309.3
  19. An Intrusion Detection System for High-Speed Networks,TP393.08
  20. Research of Software Way for Canopen-protocol’s Realization and Implantation in Servo System,TP273
  21. The Research on Distribution Network Protection Strategy Based on the Analysis of Fault Characteristics of Inverter-based Distributed Generation,TM77

CLC: > Industrial Technology > Chemical Industry > General issues > Chemical processes ( physical processes and physical and chemical processes ) > Basic theory > Hydrodynamic processes and principles
© 2012 www.DissertationTopic.Net  Mobile