[Bioconversion] [Stoves] pelletized waxed cardboard boxes

[Roger Samson]

Dick 

Its mostly just a clinker issue why some people mix difficult fuels with
wood pellets. It makes the stove a little more fuel flexible. I also tested
corn and found it somewhat unreliable to keep the flame going if I didn't
mix it. So its clinker plus flame reliability. 

If there are specific safety concerns with this fuel it probably should be
used only in commercial boilers. Even with wood pellets you can get a bang
on a pellet stove if the flame goes out for a while and you try and reignite
it before the stove cools off. Not recommended by manufacturers.

My guess is that the wax cardboard is a little difficult to burn in a wood
stove and it kept releasing its gases. With this fuel you could be a bit
more vulnerable to the big bang problem. I think it likely should be
developed as a commercial boiler fuel.

Roger

-----Original Message-----
From: stoves-bounces at listserv.repp.org
[mailto:stoves-bounces at listserv.repp.org] On Behalf Of psanders at ilstu.edu
Sent: Sunday, September 24, 2006 5:21 PM
To: Dick Gallien
Cc: bioconversion at listserv.repp.org; Roger Samson; stoves at listserv.repp.org
Subject: Re: [Stoves] pelletized waxed cardboard boxes

Dick,

I suspect that the wax was being vaporized will, but with the door 
closed there
was insufficient oxygen.  OR was your fire box without a "spark" or flame
that
would ignite the vapor/air mixture.

Seems to me that attention to the air/fuel mixture is needed.  Also seems
that
this wax-rich fuel could be well suited for some form of gasifier.  Worth
looking into.

Looking forward to Roger's comment.

Paul


Quoting Dick Gallien <dickgallien at msn.com>:

> Hi Paul,
> Late Spring I checked Menards, Fleet Farm and Wal-mart.  They all had fire
> logs, but not the waxed cardboard, so called Hot Log and they said
> Enviro-Log had them at Home Depot.  We bought their last box in May.
>
> I mentioned on one list that when I'd put boxes in my Heatmor (outdoor
wood
> boiler) and the fire seemed dead, but with the draft inducer on, a little
> smoke would appear and when the build up of gas ignited, there would be a
> big bang, which would shake the furnace and blow the door open.  When
boxes
> were fed to an alive fire, this didn't happen.
> Seems this could be a problem if the pellet stove doesn't burn steady.
Why
> did Roger suggest they be mixed with wood pellets?  Seems even when mixed,
> their potency could cause a bang.  Dick


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