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Numerical Analysis of Pulverized Coal Concentration in Primary Air Pipe of Boiler

Author: PuZuo
Tutor: LongTianYu
School: Chongqing University
Course: Heating,Gas Supply, Ventilation and Air Conditioning Engineering
Keywords: Pulverized coal concentration Primary air tube Numerical Analysis
CLC: TK229.63
Type: Master's thesis
Year: 2001
Downloads: 145
Quote: 0
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Abstract


Master pulverized coal boiler primary air distribution pipes in pulverized coal concentration is very important to improve the efficiency of the boiler . In this paper, the numerical calculation of CFD (computational fluid dynamics) method to study the pulverized coal boiler primary air distribution pipes in pulverized coal concentration . This paper studies the flow is a gas-solid flow in the collection of recent large amounts of data at home and abroad in this field on the basis of analysis and comparison, a single- fluid model . Since the three-dimensional turbulence . Therefore, the mathematical model of the two-equation k-ε discrete differential equations using the control volume method and the power function distribution program . The preparation of the semi-implicit pressure coupling equation (SIMPLE) calculated once a duct within the gas-solid flow field and concentration field general program analyzes , programming and commissioning work . Studied a duct , the establishment of the boundary conditions and mesh , the application of the preparation of the program is its numerical simulation, the results of the calculation of the concentration field of the flow field . Compared to test results with the same model at the same time , from the concentration distribution trends, theoretical calculations and experimental results are basically the same . Value of the theoretical calculations and experimental measurements analyzed and compared , and found good agreement . This description of the mathematical model used in this paper is a reasonable method of calculation is reliable .

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CLC: > Industrial Technology > Energy and Power Engineering > Steam Power Engineering > Steam boiler > Various types of boilers > Coal-fired boilers > Pulverized coal boiler
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