NUMERICAL SIMULATION AND ANALYSIS OF MEASURES USED FOR IMPROVING FLUE GAS TEMPERATURE DEVIATION IN TANGENTIAL FIRING BOILERS

AN Wei; ZHU Tong; GAO Naiping College of Mechanical Engineering

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NUMERICAL SIMULATION AND ANALYSIS OF MEASURES USED FOR IMPROVING FLUE GAS TEMPERATURE DEVIATION IN TANGENTIAL FIRING BOILERS

Thermal Power Generation Vol. 41, Issue 5, Pages: 31-35(2012)

更新时间：2025-09-28

- NUMERICAL SIMULATION AND ANALYSIS OF MEASURES USED FOR IMPROVING FLUE GAS TEMPERATURE DEVIATION IN TANGENTIAL FIRING BOILERS
- 作者机构：
  
  同济大学机械工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK224.11
- Published：2012
- 稿件说明：
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AN Wei, ZHU Tong, GAO Naiping College of Mechanical Engineering. NUMERICAL SIMULATION AND ANALYSIS OF MEASURES USED FOR IMPROVING FLUE GAS TEMPERATURE DEVIATION IN TANGENTIAL FIRING BOILERS[J]. Thermal Power Generation, 2012, 41(5): 31-35.
DOI：

AN Wei, ZHU Tong, GAO Naiping College of Mechanical Engineering. NUMERICAL SIMULATION AND ANALYSIS OF MEASURES USED FOR IMPROVING FLUE GAS TEMPERATURE DEVIATION IN TANGENTIAL FIRING BOILERS[J]. Thermal Power Generation, 2012, 41(5): 31-35. DOI：

摘要

针对某台超临界600MW机组切圆燃烧锅炉的烟温偏差问题

利用数值模拟技术分析了燃尽风反切和减小水平偏角辅助二次风(CFS)与一次风夹角2种措施对燃烧过程中炉膛温度场、火焰切圆、旋转动量、特征组分分布及NOx排放等方面的影响。结果表明

燃尽风反切技术能够较好地减轻烟温偏差

2种改进措施均可提升燃烧器区域烟气温度

减小火焰切圆直径

有利于稳定燃烧

减轻水冷壁结渣

但都会使NOx排放浓度增大。

Abstract

Directing against the problem of flue gas temperature deviation in tangential firing boiler of one large-capacity supercritical 600 MW unit

the influence of two measures

namely reversed tangence of the burn-away air

and reducing the included angle between horizontally declined auxiliary secondary air and the primary air

upon the temperature field in furnace

the tangential circle of flame

the rotational momentum

the distribution of proper components

as well a NOx emission etc.in the combustion process has been analysed.Results show that the reversed tangence technology of burn-away air can better reduce the deviation of flue gas temperature

the above-mentioned two measures can enhance the flue gas temperature in the region of burners

reducing the diameter of flame tangential circle is helpful to stabilize combustion

and alleviate slagging on the water-wall

but all may result in augmentation of NOx emission concentration.

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TEST STUDY ON INFLUENCE OF THE REVERSED TANGENTIAL ANGLE FOR SEPARATING OVER-FIRED AIR UPON THE AERODYNAMIC FIELD IN FURNACE

Related Author

QI Hongmei

HUI Shien

CUI Dawei College of Energy and Power Engineering

Related Institution

School of Energy and Power Engineering, Xi'an Jiaotong University

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