[TheForge] Melted Flares & Refractory Liner

[Dave Brown]

At 20:11 03/09/03 -0600, you wrote:
>Hi All,
>
>I'm running the awesome robust reliable cheap burners Jay Hayes sells.
>Problem is I keep melting the flares.  I replace them after 200 hours or so.
>Yah, I think she gets hot enough, thank you.  But I think the flare
>deterioration has a lot to do with the 1 1/2" castible refractory liner I
>have (backed by 3" ceramic fiber).  I have about 1/4" clearance all around
>the flare to the refractory.

Ed,

There could be several factors contributing to this.

1.  Does the end of the flare extend, even a little, into the fire chamber?

2.  Especially if you are operating with the back and front opening's 
closed relatively tight, then you may be forcing some of the combustion 
gases and secondary burn flame up along side of the flare.

3.  Running at too low of pressure for long periods can result in the 
air/fuel mixture igniting before the  mix passes the end of the flare tube.

4.  The early burn in 3 above can also be triggered by having the flare 
tube too long.  Assuming that your flare is a separate piece from the 
mixing tube, loosen the set screw(s) on the flare and shorten it a bit.

5.  Could also be something else that I'm not thinking of right now.  What 
pressure, orifice size, and mixing tube are  you using?

Dave Brown

Good Health is merely the slowest possible rate at which one can die.