Dissertation > Excellent graduate degree dissertation topics show

Experiment and Simulation for Pulverized Coal Gasification under Pressure

Author: ZhangYeYu
Tutor: QiuPengHua
School: Harbin Institute of Technology
Course: Thermal Power Engineering
Keywords: Gasification Pulverized coal Numerical Simulation
CLC: TQ546
Type: Master's thesis
Year: 2010
Downloads: 115
Quote: 0
Read: Download Dissertation

Abstract


China has abundant coal resources , coal as an important energy and chemical raw materials , is expected for a long time in China 's coal - based energy structure will not change . IGCC power generation technology is one of the effective means to achieve the efficient and clean use of coal gasification technology is an important core technology . Entrained flow gasification technology , fast response, high carbon conversion rate can be run continuously , is one of the world's most advanced gasification technology . The papers selected dry pulverized coal pressurized gasification reaction experiments and simulation studies \gasification reaction ; chemical kinetics and the gasification reaction analysis , to provide a reference for further study of the theory . Numerical simulation using software Fluent dry pulverized coal pressurized entrained flow gasification process , respectively, with nitrogen and carbon dioxide transport coal , the velocity distribution of furnace temperature distribution , and the gasification product distribution changes and at the outlet of the gasification product ingredients to establish a simple reaction model for entrained flow gasification process . During coal pyrolysis under pressurized conditions , dry pyrolysis the degassing stage and lytic phase increasing overlap during fast pyrolysis of coal under pressure to strike kinetic parameters and activation energy can be seen as a one-step reaction process . Pressurized gasification reaction itself does not promote and improve the carbon conversion rate is achieved by raising the concentration of the gaseous reactant . In the case of certain vaporization temperature , increasing the pressure limit, the presence of increase in the rate of carbon conversion reaches limit , continuous elevated pressure but will reduce the carbon conversion rate . Reaction and slow reaction the gasification atmosphere , the gas-phase reversible consider very important , numerical calculation , when the product group joined the reversible reaction of methane and water vapor , carbon monoxide and water vapor, given the parameters of the reaction kinetics of the forward and inverse calculations the stars distribution has a great influence .

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. Numerical Simulation of Film Cooling in Turbine Cascade with Non-Axisymmetric Endwall Method,V231.3
  6. High Speed Aerodynamic Convection and Coupled Heat Transfer of Complicated Bodies,V215.4
  7. The Analysis on Characteris of Vibration Source about Vertical Vibration of Surrounding Environment Induced by Rail Transit,U211.3
  8. Study on the Heat Transfer Characteristics of Particle Cluster in Circulating Fluidized Bed,TK124
  9. Numerical Simulation of SNCR Process of a 600MW Utility Boiler,TK222
  10. Numerical Simulation of Biomass Direct Reburning,TK16
  11. Numerical Simulation on Pulverized Coal Combustion Process in a 670T/H Tangential Firing Furnace,TK224.11
  12. Numerical Simulation on the Combustion Process in the Furnace of a 1000MW Lignite-Fired USC Boiler,TK224.11
  13. Study on Gas-Solid Two-Phase Flow in Spouted Beds,TK173
  14. Experimental Study and Numerical Simulation on Aerodynamic Field of Tangential Bias Swirl Burner,TK223.23
  15. Characteristic Study of Combustion in Central Reverse Flame Chamber,TK223.21
  16. Numerical Simulation and Contrastive Analysis of Labyrinth Seals and Leaf Seals,TK263.2
  17. Study of Updraft Biomass Air Gasification and Tar-Reducing Technology,TK6
  18. The lignite Preparation metallurgical reduction gas,TD849.2
  19. Numerical Study on Phosphorus Distribution in Water Environment of the Three Gorges Reservoir,X832
  20. The Design and Performance Simulation of External Valve Small Displacement Pump,TE933.3
  21. Analysis of the Impact of Tailings Dam Stability under Seepage Role,TV649

CLC: > Industrial Technology > Chemical Industry > Coal gasification industry > Gasification process
© 2012 www.DissertationTopic.Net  Mobile