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Anonymous Poster

Boiler Tube Failure

06/10/2010 1:04 PM

Dear All,

i have been working on 1000t/hr MCR boiler and we have been facing boiler tube failures. one thing which is being observed in these failures is that most of the failures are occuring on left side of the boiler although the boiler is symetric.

there are 81 panel total of final SH bundle and most of the failures are int the region of 1- 20 panels.

the tubes are highly corroded from the fire side because of the Residual fuel oil content (NA/V ratio almost 2-2.5, sulphur 3.5)
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Anonymous Poster
#1

Re: Boiler Tube Failure

06/10/2010 2:23 PM

How many burners? One side may be "off".
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PMoon
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#2

Re: Boiler Tube Failure

06/10/2010 4:07 PM

It may not be relevant to your question; but I'm curious, how have you repaired the failed tubes?

Have you examined the area of the failures for debris, tools, or anything that could be impinging the tubes and is trapped in that area of the boiler?

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Anonymous Poster
#3
In reply to #2

Re: Boiler Tube Failure

06/11/2010 1:22 AM

there is no debris or anything else that is present in that particular area perhaps there is fire side corrosion which is equally distributed throughout the panels and burners are 16 opposed fire 8 on front 8 on back and they all are racked i during normal operation
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Anonymous Poster
#4

Re: Boiler Tube Failure

06/27/2010 7:45 PM

I would suspect that you must have a temperature difference causing condensing. A slight leak at high temp will corrode quicky. Do you have soot blowers, if so are they dry when blowing?
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