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The Numerical Simulation Study of the Flow Field with the Four-channel Coal Burner

Author: WangXueYao
Tutor: ChenZuoBing
School: Wuhan University of Technology
Course: Mechanical Manufacturing and Automation
Keywords: Four-channel pulverized coal burner κ-ε model Numerical simulation Computational Fluid Dynamics ( CFD )
CLC: TQ172
Type: Master's thesis
Year: 2006
Downloads: 282
Quote: 6
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Abstract


Rotary kiln burner is one of the important parts of the firing cement , which provide heat for the entire cement rotary kiln system , only the excellent performance of the burner in order to ensure that the fuel fed to the kiln system rapidly and uniformly distributed within the combustion space , timely fire completely . combustion and in accordance with the requirements to provide sufficient heat to form a reasonable temperature field and thermal system , so that the rotary kiln system fully functional , so that quality, high efficiency , low power consumption and long-term safe operation at the same time meet the needs of environmental protection . Burner system with multiphase flow , combustion , fuel decomposition of complex physical and chemical processes , and thus in-depth study on the burner performance for reducing cement firing costs and improve the production capacity of the cement plant , and promote the development of cement industry significance. With the rapid development of computer hardware and software technology , computational fluid dynamics ( Computational Fluid Dynamics , the shorthand CFD ) as the theoretical basis of numerical simulation technology to quickly develop and mature, and many engineering practice in the high-tech fields such as aerospace confirmed. CFD technology flow in these areas , high - precision numerical prediction of heat transfer , combustion , chemical reactions , multiphase flow problems to be promoted and applied in more and more projects . This topic focuses on the internal flow field distribution in the cold state of the four-channel pulverized coal burner , coal burner duct structure and different wind speed distribution of the cold flow field , simultaneous analysis of different cold the distribution of the conditions of the recirculation zone , trying to find the regularity of the burner cold flow field distribution , so as to achieve the purpose of guidance burner structure improved in theory . In addition , numerical simulation technology can solve the the hot mold test required funding problems , and numerical simulation technology to adapt to a variety of variables . With the development of computer technology , computer numerical simulation technology in the building materials industry has also been a wide range of applications , the subject of a three-dimensional modeling software SolidWorks and CFD simulation software FLUENT complete the three-dimensional modeling and performance simulation burner , through the simulation results comparison and analysis of obtained flow field distribution and impact conditions , provides a theoretical basis for the follow-up of multiphase flow and combustion conditions .

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CLC: > Industrial Technology > Chemical Industry > Silicate > Cement Industry
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