循环流化床锅炉再热器爆管与堵灰原因分析 cause analysis of tube-burst and ash clogging on reheator of cfb boilers.pdfVIP
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循环流化床锅炉再热器爆管与堵灰原因分析 cause analysis of tube-burst and ash clogging on reheator of cfb boilers
循环:.J盘IL化床锅炉
再热器爆管与堵灰原因分析
杨兴森
山东电力研究院,山东济南 250002
[摘 要] 由于流态化燃烧的特性和炉内脱硫,循环流化床(CFB)锅炉炉内的颗粒浓度很高,且炉
内飞灰颗粒的组成成分与煤粉炉的飞灰不同,易造成再热器管磨损进而爆管。在判断
再热器泄漏发生时,应控制流化风机的运行,减少炉膛上部的颗粒浓度。同时,还可以
适时降低真空,减少再热器管吸入颗粒的可能。
[关键词] CFB锅炉;再热器;爆管;堵灰;脱硫
[中图分类号]TK223.3
[文献标识码了 B
[文章编号]1002—3364(2010)08—0041—04
[DoI编号]10.3969/j.issn.1002—3364.2010.08.041
OFTUBE—BURSTANDASH
CAUSEANALYSIS CLoGGING
oNREHEAToRoFCFBBoILERS
YANG
Xingsen
ElectricPowerResearchInstitute,Jinan Province,PRC
Shandong 250002,Shandong
tothefeaturesoffluidized and insidethefurnace,the
Abstract:Owing burningdesulphurization particle
concentrationis inCFB the of ash inthefurnaceisdif—
veryhigh boilers,andcompositionfly particles
is toresultin ofreheater further
ferentfromthatin coalboilers,it abrasion tubes,and
pulverized easily
is to attentionfor ash
totube—burst.Hence,it preventingfly particles
leading speciallyimportantpay
resultin ofud—
from intoreheatertubesaftertube—burst,toash thetime
entering clogging.Duringj
theoccurrencereheater of fanshouldbe
of fluidizing controlled,reducing
ging leakage,theoperation
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