Combustion optimization critical condition determining method on basis of heating furnace combustion model

A technology of combustion model and optimized combustion, which is applied in special data processing applications, instruments, electrical digital data processing, etc., to achieve the effects of reducing pollution emissions, improving combustion conditions, and avoiding blind adjustments

Inactive Publication Date: 2015-02-18
CHINA PETROLEUM & CHEM CORP
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Problems solved by technology

[0006] However, how to determine and optimize the combustion edge conditions in actual operation is still a technical problem

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  • Combustion optimization critical condition determining method on basis of heating furnace combustion model
  • Combustion optimization critical condition determining method on basis of heating furnace combustion model
  • Combustion optimization critical condition determining method on basis of heating furnace combustion model

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Embodiment Construction

[0050] A method for determining the optimal combustion edge condition based on the combustion model of the heating furnace of the present invention will be described in detail below in conjunction with the embodiments and the accompanying drawings.

[0051] A method for determining the optimal combustion edge condition based on the heating furnace combustion model of the present invention comprises the following steps:

[0052] 1) Use Gambit, the front-end software of FLUENT, to divide the calculation area into meshes, and carry out mesh encryption on the local area of ​​the burner, such as nozzles, fire channels and other parts. Examples of burner mesh division are as follows figure 1 shown. Apply the FLUENT simulation software to establish the combustion model of the heating furnace; the calculation area starts from the gas and combustion air inlet, and connects the furnace above the inlet. In order to reduce the calculation load and improve the calculation efficiency, acco...

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Abstract

The invention relates to a combustion optimization critical condition determining method on the basis of a heating furnace combustion model. The method comprises the following steps of: adopting FLUENT front software Gambit to carry out meshing on a computational domain and carrying out mesh refinement on a local region of a combustor so as to establish the heating furnace combustion model; applying the heating furnace combustion model to analyze a temperature field, a speed field and a concentration field in a hearth; comparing results of analysis working conditions and surveying influence of an air preheating temperature on the combustion condition, uniformity of the temperature in a furnace and pollutant emission; by numerical simulation, analyzing effects and influence of an excess air coefficient on the combustion condition, uniformity of the temperature in the furnace and the pollutant emission characteristic; and comprehensively analyzing influence of the preheating temperature and the excess air coefficient on combustion, heat transfer and NOx emission characteristic so as to determine a suitable operation range and the optimal operation conditions of the heating furnace. The combustion optimization critical condition determining method provides technical guarantee for online regulation of the heating furnace, avoids blind regulation on site, ensures equipment safety and enables combustion of the heating furnace to be in a critical state of incomplete combustion and complete combustion.

Description

technical field [0001] The invention relates to the determination of an optimized combustion edge condition. In particular, it relates to a method for determining optimal combustion edge conditions based on a heating furnace combustion model. Background technique [0002] With the emphasis on energy saving and emission reduction, the management of heating furnaces has been continuously strengthened. At present, the operation level of heating furnaces and the level of energy saving and emission reduction have been greatly improved, but there is still room for improvement in the optimal operation of heating furnaces. Under the conditions allowed by the process, optimize the combustion state, control the CO in the flue gas at a trace level, make the combustion in the critical state of incomplete combustion and complete combustion, realize the card edge operation, minimize the excess air volume, and reduce the exhaust smoke loss. Ensure efficient combustion of heating furnace, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 黄卫东李涛孙全胜李洪涛郭拂娟荆瑞静高丽岩张林浩李锐杨佩佩
Owner CHINA PETROLEUM & CHEM CORP
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