Abstract:

Traditional soot blowing method of economizers generally adopts high temperature steam as power for soot blowing which is directly purged on heat exchange elements.Its coverage is limited,soot blowing effect is poor,and the maintenance cost is high.The serious ash deposition on heat exchange tubes of economizer will quickly deteriorate the heat transfer effect.The boiler exhaust temperature will gradually increase and its thermal efficiency will be greatly reduced.The smoke resistance will also increase, which lead to high power consumption of induced draft fan.For the serious jamming problem of ash depositionin  power planst,a new type of mobile sonic soot blower is adopted and the sootblowing effect is significantly improved.The economizer operation parameters are more superior than that with steam sootblowers alone.It solves the problems of poor soot blowing performance of the steam soot blower, corrosion and blow loss of the heat exchange elements.

Key words:

font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">economizer, mobile sonic soot blower, steam soot, boiler, sonic, accumulate grimefont-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">