STUDY ON FLUE GAS TEMPERATURE REGULATION CHARACTERS AT FURNACE OUTLET OF 670t/h CFB BOILER

MAO Xiaofei1; WEI Youling2; SHI Quancheng3; CHEN Wen1; YU Wugao2; LIN Xianmin1; WANG Zhiwei4; CHEN Nianzu1 1.Jiangxi Provincial Electric Power Science Research Institute

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STUDY ON FLUE GAS TEMPERATURE REGULATION CHARACTERS AT FURNACE OUTLET OF 670t/h CFB BOILER

Thermal Power Generation Vol. 40, Issue 12, Pages: 49-53(2011)

更新时间：2025-09-28

- STUDY ON FLUE GAS TEMPERATURE REGULATION CHARACTERS AT FURNACE OUTLET OF 670t/h CFB BOILER
- 作者机构：
  
  1. 江西省电力科学研究院
  2. 江西分宜发电有限责任公司
  3. 中电投新疆能源有限公司
  4. 西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK229.6
- Published：2011
- 稿件说明：
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MAO Xiaofei1, WEI Youling2, SHI Quancheng3, et al. STUDY ON FLUE GAS TEMPERATURE REGULATION CHARACTERS AT FURNACE OUTLET OF 670t/h CFB BOILER[J]. Thermal Power Generation, 2011, 40(12): 49-53.
DOI：

MAO Xiaofei1, WEI Youling2, SHI Quancheng3, et al. STUDY ON FLUE GAS TEMPERATURE REGULATION CHARACTERS AT FURNACE OUTLET OF 670t/h CFB BOILER[J]. Thermal Power Generation, 2011, 40(12): 49-53. DOI：

摘要

对某HG670/13.7-L.PM19型循环流化床(CFB)锅炉30种运行工况进行测量

并采用最优回归分析法对影响炉膛出口烟温变化的锅炉负荷、燃煤收到基灰分、收到基挥发分、收到基低位发热量、给煤粒径、床压、一次风率、上二次风率、下二次风率、炉膛出口氧量等因素进行分析。结果表明

参数变化对炉膛出口烟温的影响幅度由大到小排列

依次为配风方式、床压、氧量、给煤粒径。床压和给煤粒径的改变需要时间较长

一般情况下不用于调节炉膛出口烟温。为防止炉膛出口烟气超温

在维持其它参数稳定的前提下

最便捷有效的手段是改变配风方式或提高氧量。在不同煤质条件下

有关参数对炉膛出口烟温的影响趋势和影响幅度不同。

Abstract

Under thirty operating conditions of one HG 670/13.7-LPM19 type CFB boiler

the measurement has been carried out.By using optimal regression analysis method

some factors affecting the flue gas temperature variation at furnace outlet

such as boiler load

ash in fuel coal on received basis(RB)

volatile matters on RB

net calorific value on RB

particle size of feed coal

bed pressure

primary air flow rate

upper secondary air flow rate

lower secondary air flow rate

oxygen quantity at the furnace outlet etc.

have been analysed.The magnitude of influence resulted from the said parameters' variation

from big to small

is listed as in the following:air distribution mode

bed pressure

oxygen quantity

particle size of feed coal.The change of bed pressure and particle size of feed coal requires longer time

being not used to regulate the flue gas temperature at furnace outlet under general conditions.In order to prevent over-temperature of flue gas at furnace outlet

under prerequisity of keeping other parameters to be stable

the most convenient

rapid

and effective meams is changing the air distribution mode or enhancing the oxygen quantity.The influence of related parameters is different in tendency and magnitude.

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