What are the hazards of coal-fired boiler air leakage

2014-06-09

Generally speaking, the air leakage of coal fired boiler is mainly divided into two cases:one is the air in the air preheater leaks from the positive pressure side to the negative pressure side of the flue gas,another is air leaks from the not tight place of the boiler.The air leakage in both cases will cause great harm to the normal operation of the boiler, they are mainly the following aspects.

Increasing the operation costs of coal-fired boiler

Because the air leakage increases the quantity of flue gas,increasing the use frequency of induced draft fan,and the resistance of flue gas emissions increases,which increases the the power consumption of blower and induced draft fan.

Increasing the fuel consumption of coal fired boiler

Due to the air leakage,the fuel moisture content becomes high,exhaust loss increases,which causes the low thermal efficiency,small output,and large coal consumption of coal fired boiler.Therefore,we should pay enough attention to the air leakage.

Exacerbating the wear of heating surface tail

The air leakage increases the exhaust quantity,the flue gas passing the heating surface tail increases,which exacerbates the wear of pipes,shortens the service time of accessories,and increases the cost of maintenance and replacement.

In addition, the air leakage will reduce the output of coal fired boiler, and reduce the temperature of the furnace,worsening the combustion.

In order to solve this problem of coal fired boiler,Zhengzhou Boiler Co., Ltd.,as a professional coal fired boiler manufacturer in China,adopts the push-pull type damper soot cleaning device to effectively prevent the deformation of the secondary combustion and the air leakage,which makes a grate contribution to reduce the production cost.For more details about our products and services, please feel free to contact us!

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