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 Post subject: Re: Cumbres & Toltec converting 489 to burn oil.
PostPosted: Wed Dec 16, 2020 5:39 pm 

Joined: Thu Apr 14, 2005 9:34 pm
Posts: 2836
Location: Copenhagen, Denmark
Alan Walker wrote:
Randy Gustafson wrote:
From what I've learned it's really a two-pronged problem - one being the fire risk and the ongoing conflict with the forest service - and the second being what's considered to be the 'inevitable' loss of their coal supplier in the future.

I love coal smoke as much as the next guy, but given the situation, I think it's the right decision. I'm glad 493 is working as good as it is, it's not always easy to do a conversion and get the performance you need, and that's a very challenging railroad with enough steam demands as it is.

I've bemoaned what I consider to the the short-sightedness of so many electrical utilities tearing out their infrastructure to handle coal when the scrap value of steel is so low - better to mothball it not knowing the future than remove it, and in some cases like the Somerset Railroad (Rochester, NY) the entire rail access is being removed. Gas looks like the current default decision, but so did whale oil in 1840. Same with D&S, it may be oil, but historically the infrastructure and history retaining coal handling needs to be preciously preserved.


Coal is dead as a fuel. It's going away now. The goal in the future is ultimately going to be to keep operating steam locomotives going in any form for as long as possible. The suppliers that do survive in the long run are not going to keep supplying fuel grade coal-at least not for small batch orders (probably anything less than 10,000 tons). The long term viability of coal as a resource for anything is questionable at the moment. Most of the experts see it becoming a resource for extraction of elements for chemical processes. Gas is also on the way out-most of the major utilities have stated that as far as their long term energy plans are concerned, it's just a gap filler or bridge fuel on the path to total conversion to renewables.

As to new generation coal burning generation plants that some countries have planned (like China), most of those will never actually be built. While there are some that are planned, most have not been funded.


On top of that - don't forget China had no problem building and using obsolete technology for very short gain. Remember all those steam locomotives built in the 1980s? China will have no problem building coal electric plants, using them for 10 years, and then tearing them down. Even in China, coal is not the long term plan.

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 Post subject: Re: Cumbres & Toltec converting 489 to burn oil.
PostPosted: Wed Dec 16, 2020 6:21 pm 

Joined: Sun Aug 22, 2004 3:37 pm
Posts: 1325
Location: Pacific, MO
Robby Peartree wrote:
CA1 wrote:
Is the performance generally negatively affected in such as conversion?

Meaning the locomotive doesn't steam as freely as on coal due to less btu?

Is there a negative performance? Absolutely just ask any railfan! 200psi coal steam has better performance than 200 psi oil steam. The pistons can tell the difference!

Steaming has to do with the design of the firebox and drafting but given the western railroads that had locomotives with the same size fireboxes or larger with oil as a fuel I do not understand the confusion on how oil will perform.

Robby Peartree


I don't understand your post. Is it an attempt at sarcasm or??


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 Post subject: Re: Cumbres & Toltec converting 489 to burn oil.
PostPosted: Wed Dec 16, 2020 10:42 pm 

Joined: Sun Oct 15, 2017 7:58 pm
Posts: 172
Re. the 489's conversion to oil.

Love the smell of coal smoke in the morning, but as many have said,
those days are rapidly drawing to a close.

I'm told conversion to oil involves modifying the tender to hold an oil tank in the coal space.
Including the tender/engine connections.

The ashpan is replaced by a different setup to properly feed air to the oil flame.

A burner is installed. Could be front burner or rear burner.
There are different burners for different fuels. Is it Bunker C, or peanut oil.

Then the firebox has to be converted to handle the flame thrower effect of the burner.

When CPR rebuilt their 2816 'Empress', it was converted from coal to oil.
Firebrick walls were built inside the firebox, to lengthen the flame path.
And, just as important...shield the tube sheet.

When it's done...life is much easier for everyone....and, best of all, the cab stays clean..

This is just my two cents worth, but if we don't get out ahead of this,
there are lots of people who'd be more than happy to shut down each and every steam operation.
So maybe, what's happening with 489, to ensure the continuance of the industry,
isn't such a bad idea.


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2816  new Fire Box  NVan.jpg
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2816 Scranton As found 5 (1).jpg
2816 Scranton As found 5 (1).jpg [ 179.32 KiB | Viewed 6298 times ]
2816 @ Scranton.jpg
2816 @ Scranton.jpg [ 224.71 KiB | Viewed 6298 times ]
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 Post subject: Re: Cumbres & Toltec converting 489 to burn oil.
PostPosted: Wed Dec 16, 2020 10:56 pm 

Joined: Sat Feb 05, 2005 1:05 am
Posts: 488
Cool pics of 2816. CP just followed the blueprints for oil fired 2800s. It was set up identical to the 2860.


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 Post subject: Re: Cumbres & Toltec converting 489 to burn oil.
PostPosted: Wed Dec 16, 2020 11:21 pm 

Joined: Sun Oct 15, 2017 7:58 pm
Posts: 172
M Austin
re. CPR drawings.
Pretty much.


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 Post subject: Re: Cumbres & Toltec converting 489 to burn oil.
PostPosted: Wed Dec 16, 2020 11:28 pm 

Joined: Wed Aug 25, 2004 11:16 am
Posts: 767
Frisco1522 wrote:
Robby Peartree wrote:
CA1 wrote:
Is the performance generally negatively affected in such as conversion?

Meaning the locomotive doesn't steam as freely as on coal due to less btu?

Is there a negative performance? Absolutely just ask any railfan! 200psi coal steam has better performance than 200 psi oil steam. The pistons can tell the difference!

Steaming has to do with the design of the firebox and drafting but given the western railroads that had locomotives with the same size fireboxes or larger with oil as a fuel I do not understand the confusion on how oil will perform.

Robby Peartree


I don't understand your post. Is it an attempt at sarcasm or??


It is not sarcasm at all. In fact, I hear if you use Christmas snow in the boiler for coal steam, Frosty the Snow Man not only appears but he grants you a special wish and a ride to see Santa.
Yes it is Sarcasm. But the problem is Railfans do not seem to study history or the technology of railroading. Today they argue over paint and what locomotive they want to see operate so they can take pictures. They have no clue that railroads could convert steam locomotives between fuel types in a matter of days. They look at a locomotive from the Harriman Era and think the boilers are the same because the grate areas are the same never mind that one locomotive has Crown Bars and the Non Harriman Line Locomotive has Staybolts. If you think about the history of railroading and the different fuels used, it should be painfully obvious to anyone that the use of oil can be done successfully. If one does not understand the issues of the conversion the Question to ask is what needs to be done to make the conversion a success.

Robby Peartree


Last edited by Robby Peartree on Fri Dec 18, 2020 12:58 am, edited 1 time in total.

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 Post subject: Re: Cumbres & Toltec converting 489 to burn oil.
PostPosted: Wed Dec 16, 2020 11:51 pm 

Joined: Sat Feb 05, 2005 1:05 am
Posts: 488
softwerkslex wrote:
.... China will have no problem building coal electric plants, using them for 10 years, and then tearing them down. Even in China, coal is not the long term plan.


I spent 7 months in Downtown Wuhan China (2 transit stops from the main 3-way interchange) in 2014 on various projects. One was assessing a 1 million bottle per day factory for thermal efficiency. In the photo, you can see a square grid on the left smokestack. After the first walk through, ending up between the 2 stacks, I saw the left stack surrounded by a structural steel grid. With everything I had seen I asked the vintage of the plant, "1950s, 60s...?" No. 1 on the left was built in 2007 and no. 2 in 2009. The factory had gas producer furnaces they were running about 400F to cold for maximum CO production. I could have saved about 10% on their fuel bill, but since once you touch one aspect and all the other aspects are similarly compromised, when does everything start to fall apart?

This as a prelude to slight perception modification "10 years, and then they fall down..."

Rail content: CHR 4 HIGH SPEED meets in 12 minutes @ 300 kph(186mph)

Attachment:
China-glass-bottle-factory.jpg
China-glass-bottle-factory.jpg [ 48.62 KiB | Viewed 6251 times ]


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 Post subject: Re: Cumbres & Toltec converting 489 to burn oil.
PostPosted: Thu Dec 17, 2020 12:11 am 

Joined: Thu Dec 12, 2013 1:26 pm
Posts: 258
I don't understand why they don't convert an engine to GPCS, which reduces smoke and cinder ejection. I think it's worth a trial in an effort to retain coal as a fuel.

Tom Hamilton


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 Post subject: Re: Cumbres & Toltec converting 489 to burn oil.
PostPosted: Thu Dec 17, 2020 1:07 am 

Joined: Tue Nov 03, 2020 2:39 pm
Posts: 69
WVNorthern wrote:
If this is the price of the C&T not having to shut down during high fire-risk times, then I guess it has to be. Perhaps some entrepreneur will come up with a coal smoke "scratch and sniff" for the hard-core railfans....or you could always come to Cass here in wild, wonderful West Virginia where all the geared steam still uses good old WV bituminous.


This was the first issue we were hit by with the County ( we are in County territory not City limits ) and we have what they like to call a fire trap. 160 acres of rolling grass land with very large California oak trees. If the grass takes off it will move very fast and hot, not for long but it will burn fast. So we did not even mention wood or coal fired but first said diesel fuel, heavy or light and said, well gee that is the same fuel they use in bulldozers and tractors and such. OH Ok. Would be insane to have any trail of burning embers falling out of the firebox or worse a spark ash. So I am throwing in extra bonus to them, like saying fuel oil has no sparks and we will run an ( we know not necessary ) screen on the smoke stack. Here we are required to have a screen on any fireplace chimney or outside fireplace. I say this FIRST to cut them off at the pass so to say. Another issue is air pollution. New fireplaces are now required to have catalytic converters so no smoke comes out. Try to explain to them, 100 year old locomotives don't have air pollution control devices. We are dealing with social justice warriors here, bullshit brains. They start asking how many milligrams of carbon dioxide they produce per mile ! ! ! ! Quick answer to shut up the crazies, they were built before 1975 so did not come with air pollution control equipment. WOW what dumbfuuks.

In one of our places we heat the house with used engine oil. Until it gets up to temperature it is extremely cruddy and oily smoke. The fireplace box gets a bad gunky deposit so we know unless used oil gets up to the right temperature and vaporizes, it condenses out and covers everything. I've used it in heating oil burners and it clogs lots of ways those who use it know if done wrong in a vaporizer it can be explosive. Still considering diesel, less BTU but not as messy and we really are not running a business train, just old guys and childhood memories.

Better to have a wood or coal burner running on oil than a static display of what used to be and will never be again. One nice thing about oil, turn it off and the temperature drops right along with it VS a bed of coals.

Just my opinion.

.


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 Post subject: Re: Cumbres & Toltec converting 489 to burn oil.
PostPosted: Thu Dec 17, 2020 1:16 am 

Joined: Tue Nov 03, 2020 2:39 pm
Posts: 69
Old Smokey wrote:
Re. the 489's conversion to oil.

Love the smell of coal smoke in the morning, but as many have said,
those days are rapidly drawing to a close.

I'm told conversion to oil involves modifying the tender to hold an oil tank in the coal space.
Including the tender/engine connections.

The ashpan is replaced by a different setup to properly feed air to the oil flame.

A burner is installed. Could be front burner or rear burner.
There are different burners for different fuels. Is it Bunker C, or peanut oil.

Then the firebox has to be converted to handle the flame thrower effect of the burner.

When CPR rebuilt their 2816 'Empress', it was converted from coal to oil.
Firebrick walls were built inside the firebox, to lengthen the flame path.
And, just as important...shield the tube sheet.

When it's done...life is much easier for everyone....and, best of all, the cab stays clean..

This is just my two cents worth, but if we don't get out ahead of this,
there are lots of people who'd be more than happy to shut down each and every steam operation.
So maybe, what's happening with 489, to ensure the continuance of the industry,
isn't such a bad idea.


Question, how well do the fire bricks stand up to thermal cycling and the vibrations from movement down the track ? I've seen firebricks creep and scatter, while the job looks beautiful, how long before the bricks have to be rebuilt in place ? ?

.


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 Post subject: Re: Cumbres & Toltec converting 489 to burn oil.
PostPosted: Thu Dec 17, 2020 9:15 am 

Joined: Sun Aug 22, 2004 7:19 am
Posts: 6464
Location: southeastern USA
The heat of the fire glazes the surface and it holds together very well, thank you. You can always glue them together with thin set mortar if you want to be very careful.

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“God, the beautiful racket of it all: the sighing and hissing, the rattle and clack of the cars over the rails. These were the sounds that made America the greatest country on earth." Jonathan Evison


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 Post subject: Re: Cumbres & Toltec converting 489 to burn oil.
PostPosted: Thu Dec 17, 2020 9:51 am 

Joined: Fri Nov 11, 2016 10:17 pm
Posts: 246
On the 2816, is the burner under the fire door pointed forward or at the front of the firebox pointed back ?


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 Post subject: Re: Cumbres & Toltec converting 489 to burn oil.
PostPosted: Thu Dec 17, 2020 10:25 am 

Joined: Tue Sep 14, 2004 7:52 am
Posts: 2477
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Last edited by Kelly Anderson on Fri Aug 30, 2024 2:45 pm, edited 1 time in total.

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 Post subject: Re: Cumbres & Toltec converting 489 to burn oil.
PostPosted: Thu Dec 17, 2020 11:31 am 

Joined: Thu May 24, 2012 1:37 pm
Posts: 2492
More on GPCS: it is a large-scale chemical reaction, not the kind of combustion familiar to boiler designers, and there is one important distinction in the quality of the flame that it produces -- it is the transparent production of gas from transparent reactants, which does not have the same emission spectrum characteristics of luminous carbon as found in typical coal or oil firing.

Where GPCS can be successful is in long runs at high steady power, where little change is required and the thermal uptake in the radiant and convection sections will produce adequate reasonably steady-state steam mass flow at adequate superheat. Throttling up and down, or any particular sustained period of drifting without stable draft, can produce all sorts of problems. I suspect a good computer-assisted firing system would help with many of the system's issues -- but the money to pay for that might buy a very large amount of more suitable fuel and equipment.

As one of the major 'gases' that is 'produced' in the system is carbon monoxide, it is wise not to use Porta's many small hollow-staybolt "secondary air tuyeres" from the cab into the backhead and rear water leg area. They work just fine on usual negative-draft firing conditions, but as soon as the throttle is closed fun can start.

Presumably enough primary air can be admitted to the windbox under the grate to allow the engine to be safely hostled and kept in enclosed spaces when not running under GPCS.

In my opinion another possible fuel would be a briquette mix of torrefied wood and coarsely-ground coal (with the right admixture of ash and fluxing agents to knock down any major pollutants in either fuel material). This is NOT the material used in pellet stoves, and it does NOT behave like charcoal briquettes, but it can be hand-fired and burned as coal is. (This is probably what the CSR "Project 130" fuel would have turned out to be like in practice.) One part of this is to avoid fuel friability, so that fines can't be levitated in reducing combustion-gas conditions through the tubes and out the front end to re-ignite in the atmosphere.

I'd also look into using a comparatively small baseline fire of similar material in the same way that the 'flameholding' bed in the earliest oil-fired locomotives was provided, and then superfire one of the oil 'alternatives' to match variable demand when necessary. A number of locomotives have used a similar approach, I believe with some success where tried.

No, I have no idea whether either of these actually produces sparks that make it out of the stack to lineside or not -- although a great deal of experimentation with torrified wood/coal cofuels has been done, most of it has been in the context of pulverized firing (which I do NOT consider suited to locomotive service for reasons I don't think I need to list ;-}) and therefore only tangentially applicable to locomotive service. It might, however, be desirable to set up a pilot program somewhere to test this in ... let's say, a narrow-gauge coal-fired 2-8-2 under certain controllable conditions ... to see how well it does.

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 Post subject: Re: Cumbres & Toltec converting 489 to burn oil.
PostPosted: Thu Dec 17, 2020 12:23 pm 

Joined: Sun Aug 22, 2004 7:19 am
Posts: 6464
Location: southeastern USA
CA1 wrote:
On the 2816, is the burner under the fire door pointed forward or at the front of the firebox pointed back ?


US practice was under the throat or towards the forward end of the firepan pointing back, no brick arch. Canadian practice is burner under the door pointing forward, with brick arch. The small Welsh conversions used a central burner pointing out in a ciircle. SLM/ Sulzer has a cluster of burners surrounding a pilot burner. I hear the 3 Rivers Rambler is using some form of multiple burner arrangement, wish I knew more about it.

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