
2014年第12期(总第204期)
doi:10.3969/j. issn. 1009 3230.2014.12.008
应用能源技术
300MW机组暖风器改造方案探讨及可行性分析
廖光明",张佳宝”
(1.山西平朔煤研石发电有限责任公司,山西期州036800;
2.华北电力大学,河北保定071000)
摘要:装设锅炉暖风器有效的避免了空气预热器冷端低温腐蚀,但除极地区外,暖风器作为阻力件长期闲置在风道,无谓增大送风机电耗。旋转式暖风器可以克服这种弊端,将暖风器旋转一定角度,过程中不需要停运送、引风机,同时提出方案解决在运行实践中也出现的泄露、堵塞、结冰等问题。针对某厂300MW机组提出暖风器改造方案,并进行可行性分析,结果表明停运期间暖风器阻力显著下降,有效降低一二次风机电耗,经济效益明显。
关键词:旋转式暖风器;虏胀;改造;节能降耗中图分类号:TU834.1
文献标志码:B
文章编号:1009-3230(2014)12-003104
TheDiscussionandFeasibility Analysis to Steam-air Heater
Transformationof3ooMWPowerUnit
31
LIAO Guang-ming',ZHANG Jiabao?
(1.Shanxi Pingshuo Gangue fired Power Generation Co.,Ltd,Shuozhou 036800,Shanxi Province, China; 2. North China Electric Power University, Baoding 071000, Hebei Province, China)
Abstract: It effectively avoids the low temperature corrosion in the cold end of air preheater to install the boiler steam air heater. But in addition to the extremely cold area, steam - air heater idles for a long time in air duct, that increases the fan consumption.Rotating steam air heater can overcome these drawbacks. When the steam air heater is rotating, it doesnt need to shut down the forced draft fan and induced draft fan. At the same time, it puts forward solutions to solve the problem such as leakage, blocking and icing. In view of the 300MW unit, it puts forward retrofit scheme and a feasibility analysis for steam - air heater. The results show that steam - air heater resistance significantly reduces, the fan power consumption effectively reduces, and economic benefit is obvious during the shutdown time.
Key words:Rotating steamair heater; Expansion; Retrofit;Energy saving
0引言
进人21世纪,全球气候变化,能源紧缺,节能减排是关系经济社会可持续发展的重大战略间题,是中央确定的我国经济社会发展的重大战略任务。火电行业既是优质清洁能源的创造者,又
收筷日期:201409-10
修订日期:2014-1110
作者简介:廖光明(1974-),男,工程师,研究方向为空冷系
统的在线监测与节能分析。
万方数据
是一次能源消耗大户和污染排放大户,因而也是国家实施节能减排的重点领城。火电厂降低供电煤耗的一个主要方面就是降低厂用电率,而风机电耗时常用电的一个大户。固定式暖风器技术已在电厂中应用多年,在运行实中仍然存在较多问题,其中最主要问题是除极寒冷地区,大多数电厂暖风器长期闲置,作为阻力件横置在风道,无谓增大送风机电耗。某300MW机组根据设计煤种