[TheForge] Petrogen Torch Yak - Burning Bars

Wed Aug 18 07:29:33 EDT 2004

In our area major welding supply house have them / can get them.  They will
have them in stock if them have any demolition contractors or supply to
scrap yards or steel mills as customers.

Dave
----- Original Message ----- 
From: "Peter Fels And Phoebe Palmer" <artgawk at thegrid.net>
To: "Sponsored by ABANA" <theforge at mailman.qth.net>
Sent: Tuesday, August 17, 2004 11:21 PM
Subject: Re: [TheForge] Re: RE: Petrogen Torch Yak

> Those sound nifty...where do you get them Dave?
>
> David E. Smucker wrote:
>
> >Ray,
> >
> >Have you ever seen or used "burning bars" for demolition work.  The are a
> >thin steel tube packed with steel wire.  The small size is about 3/8 dia
and
> >3 feet long and the large size go up to about 1 inch diameter and 20 feet
> >long.  They have a crimp on one end so the wire doesn't fall out.  The
tube
> >is connected to just oxygen -- no fuel gas at all. While they are pack
with
> >wire there is enough space between the wires for oxygen to flow.  You
> >"start" them with a regular torch -- just bring the end up to a hot
yellow
> >heat -- then turn on the oxygen.  The tube and wire are consumed in the
> >process and generate a great deal of heat while excess oxygen is supplied
> >like a oxygen lance.  They will blow through lots of things cutting
steel,
> >rebar and concrete.  They are not for the faint of heart.  Oh, and the
> >quality of the cut is not very good.
> >
> >Dave Smucker
> >----- Original Message ----- 
> >From: <debmiller at fuse.net>
> >To: "Sponsored by ABANA" <theforge at mailman.qth.net>
> >Sent: Tuesday, August 17, 2004 7:47 AM
> >Subject: [TheForge] Re: RE: Petrogen Torch Yak
> >
> >
> >
> >
> >>My understanding of the petrogen torch is that it was developed for the
> >>
> >>
> >Department of Energy for use in the dismantling of nuclear weapons sites,
> >like Fernald, etc. I have not personally used one but had previously
> >reviewed their performance for possible purchase by GE for use in large
> >scale demolition projects. We were taking down 50 plus year old building
> >with thick steel plate shielding, 3 foot thick concrete walls that were
> >almost solid rebar, etc.
> >
> >
> >>The cutting speeds are incredible, fuel costs are(were) cheap and the
> >>
> >>
> >cutting capacity is unbelievable. I will see if I can dig up the DOE site
> >that had a pdf file of an extensive study performed comparing the
petrogen
> >to acetylene.
> >
> >
> >>As far as safety, gasoline is not flammable, only the vapors. So the
unit
> >>
> >>
> >keeps the fuel in liquid form all the way up to the mixing chamber in the
> >torch head. Then it is vaporized and mixed with O2 and baby does it burn.
> >Gasoline is 125,000 BTU/gallon!!!!
> >
> >
> >>That's a ton of heat!!
> >>
> >>Ray Miller
> >>Cincinnati
> >>
> >>
> >>>From: "Michael H. Murphy" <blacksmith at comcast.net>
> >>>Date: 2004/08/16 Mon PM 06:00:05 EDT
> >>>To: "'Sponsored by ABANA'" <theforge at mailman.qth.net>
> >>>Subject: RE: [TheForge] allstate oxy-propane torch
> >>>
> >>>After reading through this whole thread (and getting some good info out
> >>>
> >>>
> >of
> >
> >
> >>>it), I figured this one would really get everyone going.  N.B. I've
> >>>
> >>>
> >never
> >
> >
> >>>tried it, nor talked to anyone who has, so I'm not claiming anything.
> >>>
> >>>http://www.petrogen.com/
> >>>
> >>>Murf
> >>>
> >>>
> >>>
> >>>>-----Original Message-----
> >>>>From: theforge-bounces at mailman.qth.net [mailto:theforge-
> >>>>bounces at mailman.qth.net] On Behalf Of Bruce Freeman
> >>>>Sent: Monday, August 16, 2004 3:35 PM
> >>>>To: theforge at mailman.qth.net
> >>>>Subject: Re: [TheForge] allstate oxy-propane torch
> >>>>
> >>>>I went to the site and found the table.  I did not find any
> >>>>
> >>>>
> >explanation
> >
> >
> >>>>of what they MEAN by oxygen to fuel gas ratio.  As I and others have
> >>>>pointed out, it certainly is not the stoichiometry of the respective
> >>>>reactions.  It may be "correct", but we have to know what it means to
> >>>>judge that.
> >>>>
> >>>>Bruce
> >>>>NJ
> >>>>
> >>>>
> >>>>
> >>>>>>>"terry l. ridder" <terrylr at blauedonau.com> 8/16/2004 3:16:48 AM
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>hello;
> >>>>
> >>>>no the table is correct:
> >>>>reference for the table are:
> >>>>
> >>>>twi world centre for materials joining technology
> >>>>oxyfuel cutting - process and fuel gases
> >>>>http://www.twi.co.uk/j32k/protected/band_3/jk49.html
> >>>>
> >>>>the usa affiliate is edison welding institute at www.ewi.org
> >>>>
> >>>>college chemistry book
> >>>>
> >>>>every one   carbon  atom needs 2 oxygen atoms to form CO2.
> >>>>every two hydrogen atoms  need 1 oxygen  atom to form H2O.
> >>>>
> >>>>propane == C3H8
> >>>>oxygen  == O2
> >>>>
> >>>>C3H8(g) + (5)O2(g) == (3)CO2(g) + (4)H20(g)
> >>>>
> >>>>the above equation is balanced.
> >>>>
> >>>>acetylene == C2H2
> >>>>oxygen    == O2
> >>>>
> >>>>C2H2(g) + (2.5)O2(g) = (2)CO2(g) + H2O(g)
> >>>>
> >>>>the above equation is balanced.
> >>>>
> >>>>propylene == C3H6
> >>>>oxygen    == O2
> >>>>
> >>>>C3H6(g) + (4.5)O2(g) = (3)CO2(g) + (3)H2O(g)
> >>>>
> >>>>the above equation is balanced.
> >>>>
> >>>>On Sun, 15 Aug 2004, James Binnion wrote:
> >>>>
> >>>>james> Terry your chart is wrong or has a typo.
> >>>>james>
> >>>>james> Acetylene:
> >>>>james> Theoretical Oxygen Ratio,  by  volume 2.5 : 1
> >>>>james> Torch Oxygen Ratio, by Volume 1.1 : 1
> >>>>james>
> >>>>james> Propane:
> >>>>james> Theoretical Oxygen Ratio,  by  volume 5 .0: 1
> >>>>james> Torch Oxygen Ratio, by Volume  3.5 : 1
> >>>>james>
> >>>>james> Source for Torch Oxygen Ratio, by Volume
> >>>>james> Oxygen Cutting; Meyer; Green et. al.; Welding Handbook, Vol. 2,
> >>>>8th
> >>>>james> ed., pg. 454,  American Welding Society
> >>>>james>
> >>>>
> >>>>--
> >>>>terry l. ridder ><>
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