A Numerical Simulation Method for Combustion Process Interaction Between Pulverized Coal Particles

A combustion process and numerical simulation technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problem of energy saving, consumption reduction and emission reduction measures, provide convenient and efficient technical support, and can not be effectively used for guidance Problems such as improvement of pulverized coal combustion technology and optimal design, to achieve efficient capture and reproduction, and high reliability

Active Publication Date: 2018-11-13
ANHUI UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0005] Zhao Yunhua from Harbin Institute of Technology considered the influence of the external initial conditions of uniformly distributed spherical pulverized coal groups, such as ambient temperature and atmosphere concentration, on the ignition and combustion of pulverized coal, but they lacked the influence of the combustion of different particles inside the pulverized coal cluster. At present, the domestic research on the influence of the interaction mechanism between the particle size and spacing of pulverized coal particles on the combustion process is still blank, so it cannot be effectively used to guide the improvement and optimal design of pulverized coal combustion technology in industrial production , unable to provide convenient and efficient technical support for energy saving, consumption reduction and emission reduction measures for power plant boilers, blast furnace coal injection and other industries

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  • A Numerical Simulation Method for Combustion Process Interaction Between Pulverized Coal Particles
  • A Numerical Simulation Method for Combustion Process Interaction Between Pulverized Coal Particles
  • A Numerical Simulation Method for Combustion Process Interaction Between Pulverized Coal Particles

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Embodiment 1

[0059] The numerical simulation method of the combustion process interaction between pulverized coal particles in this embodiment is based on the existing mathematical model of the large-scale computational fluid dynamics software FLUENT, using FLUENT UDF and FLUENT Scheme mixed programming to couple user-defined models, that is Coal powder particle interaction model (particle structure form, particle mass change model, particle size dynamic change model, volatile matter precipitation model), mass change preservation mechanism, to realize the numerical simulation of the interaction between coal powder particles in the combustion process, the specific The steps are:

[0060] (1) Based on the real industrial composition of coal powder particles, as shown in Table 1, regardless of moisture and ash, assuming that the interior of coal powder particles is fixed carbon, and the periphery is volatile matter, the structural form of coal powder particles is constructed, and coal powder p...

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Abstract

The invention discloses a numerical simulation method for interaction of coal powder particles in burning, belonging to the technical field of computer numerical simulation. According to the characteristics of burning of the coal powder particles, the method is characterized in that on the basis of calculation of an existing mathematical model of fluid mechanics software FLUENT, FLUENT UDF and FLUENT Scheme are used for hybrid programming, and user-customized models, namely, a coal powder particles interaction model (a particle construction form, a particle mass change model, a particle size dynamic change model and a volatile element precipitation model) and a mass change storage mechanism, are coupled, so that numerical simulation of interaction of the coal powder particles in burning is realized. Experiments show that change rules of coal powder particle temperature and so on obtained through the numerical simulation method are generally consistent with experiment data. Through adoption of the method, a real, objective interaction mechanism of coal powder particles in burning is disclosed conveniently and efficiently, thereby providing powerful theoretical basis and technological support for improvement and optimization design of the coal powder burning technology.

Description

technical field [0001] The method of the invention belongs to the technical field of computer numerical simulation, and more specifically relates to a numerical simulation method for the interaction between coal powder particles in the combustion process. Background technique [0002] Energy is an important material basis and production factor to support social development and economic growth. Sufficient and stable energy supply not only provides power for industry, provides guarantee for agriculture, promotes technological progress, and guarantees the development of the national economy, but also promotes the improvement of people's quality of life , create numerous employment opportunities, and promote the development and progress of human society. The rapid development of the world economy has also promoted the development of energy and the improvement of the utilization technology. The two not only promote each other, but also restrict each other. Coal is China's basic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 顾明言王计敏何先辉楚化强
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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