Dissertation > Excellent graduate degree dissertation topics show

The Exploration of Chemical Reaction Kinetics in the Impinging-streams Reactor

Author: LiuHaiZhou
Tutor: BaoChuanPing
School: Wuhan Institute of Technology
Course: Chemical Engineering
Keywords: impinging streams reaction rate constant kinetics micro-mixing
CLC: TQ031
Type: Master's thesis
Year: 2011
Downloads: 22
Quote: 0
Read: Download Dissertation

Abstract


The traditional stirred reactors are widely applied in liquid phase reactions. However, due to mix non-uniform, there are some problems such as local reaction non-uniform and selectivity decrease etc. Therefore, it is very critical to strengthen fluid liquid phase to mix uniformity in the reactor, in particular to strengthen the effects of micro-mixing, for improving the reaction conversion rates, product yields and reducing energy consumptions.Impinging streams reactor is a new kind of reactor, which can quickly promote the material micro-mixing and enhance the mass transfer rates. The paper mainly to research chemical kinetics in the impinging streams reactor.By the chemical kinetics of molecular collision theory, molecular chemical reaction must meet two conditions: first,the molecules which to be react must contact and collide,the other,the molecules participate in the collision must have a certain energy and kinetic energy is greater than or equal to critical energy, then the activation of the collision which can react.The submerged circulative impinging streams reactor has a special mass transfer structure and good micromixing function, which make flow micro group mix well at the molecular scale, greatly increased the frequency of collisions between molecules. According to that we can conclude: the reaction kinetics process can be promoted immensely by increasing the intermoleculars collision frequency and enhancing effective collision because of the intense micromixing and the pressure fluctuation in impinging streams reactor.In this paper, the reaction kinetics rates in the submerged circulative impinging streams reactor and the stirred reactor were researched through the four classic reactive systems, which were the hydrolysis of sucrose, soybean oil methyl ester, methyl ester of oleic acid, the synthesis of butyl acetate. The results show that the chemical reaction rate constant in the impinging streams reactor is higher about 10% to 20% than in the stirred reactor.The influences of the rotary speed and geometric proportion effective power on the reaction rate constant in the experiments were researched in the paper. The experiments show that the reaction rate k can be significantly improved by increasing the rotational speed in the impinging streams reactor. The reaction rate constant k was significantly higher than that in the stirred reactor at the geometric proportion effective power.

Related Dissertations

  1. Study on the Degradation of Unsaturated Polyester Resin and Fiber Reinforced Polymer in Hot Compressed Water,TQ320.1
  2. Quantitative Analysis of Pyrolysis Component of Typical Low Volatile Coal of Chinese,TQ530.2
  3. Study on Pyrolysis and Combustion Characters of Muticiple Solid Waste by Tga-Ftir,X705
  4. Process Optimization and Degradation Kinetics for Microwave Vacuum Drying of Different Traditional Chinese Medicine Extract,TQ461
  5. Study on the Synthesis and Properties of Poly(1,4-Cyclohexyledimethylene Terephthalate) (PCT),TQ323.4
  6. Study on the Preparation of Polyethylene Naphthalate and Its Performance,TQ316.33
  7. Hot air drying characteristics of lettuce osmotic dehydration mass transfer kinetics and permeability,TS255.52
  8. Adsorption Effects of Phosphate and Chromium from Aqueous Solution by Adsorption Using LDH and Mg/Fe/Al Modified Montmorillonites,X703
  9. Cellulose Pretreatment with Ionic Liquid for Enzymatic Hydrolysis,TQ352.1
  10. A Study on Removal Characteristics and Kinetics Model for Denitrification of AAO Technology,X703
  11. Polycyclic aromatic hydrocarbons degradation of the growth characteristics of bacteria in soil remediation,X172
  12. Protective Effects of Soy Saponins on Acute Alcohol-induced Liver Damage,R285.5
  13. Imidazolium ionic liquids Thermal Analysis,O626.23
  14. Study on Preparation and Dyeing Technology of PANI/PET Composite Fabric,TS193
  15. Catalytic Study of Hydrogen Peroxide Synthesis Directly from H2 and O2,TQ123.6
  16. Preparation of Epoxy Resin Cured with Latent Curing Agent at Moderate Temperature,TQ323.5
  17. The Modification of Attapulgite Clay and the Application in Dyeing and Printing Wastewater Decoloring,X791
  18. Bis-GMA -based organic monomer molecular design and its impact on the performance of dental composite resin,R783.1
  19. Absorption - Photo-assisted oxidation process emissions of methylene chloride,X701.7
  20. Electrochemical Treatment of pesticide intermediates ( phthalonitrile ) Wastewater,X786
  21. BiVO 4 / bentonite Photocatalyst and Its Dyeing Wastewater Treatment,X791

CLC: > Industrial Technology > Chemical Industry > General issues > Chemical reaction process > General chemical reaction process
© 2012 www.DissertationTopic.Net  Mobile