What will cause the wear of CFB boiler heating surface
In the operation of circulating fluidized bed boiler,the wear of CFB boiler heating surface will reduce its thermal efficiency and shorten its service life,therefore,the boiler user should actively find out the reasons ,in this paper,that will be introduced in the following sections for your reference.
The design problems of circulating fluidized bed boiler tail flue
Although the circulating fluidized bed boiler is equipped with cyclone separator,the concentration of fly ash that the separator has not been able to collect in the tail flue is still high,reaches 4 kg/m3,due to the actual operation efficiency of separator in deviating from the design efficiency,the large particles enter into the tail flue is more,thus it increases the wear and tear degree of the location.
The influence of tube bundle design structure
According to relevant data,the wear of the second row of staggered tube bundle is about 2 times larger than that of the first row,the wear of in-line tube bundle is less than that of staggered ones.The partial wear of the in-line and staggered tube bundle is basic similar.
High flue gas velocity
According to the test,the wear rate is proportional to the particle velocity,the greater the flue gas flow rate,the greater the dust particles velocity,resulting in the wear of rear heating surface of CFB boiler.
Through the above analysis,we have a simple understanding of the reasons causing the wear of CFB boiler heating surface,later we introduce how to prevent that.ZG,as a professional CFB boiler manufacturer,will provide the reliable products and practical solutions for you!
