Bituminous coal in stoker

Bituminous coal in stoker

PostBy: steinkebunch On: Thu Feb 15, 2007 7:14 pm

Hello - I'm from Wyoming where we have bitiminous coal available from local mines. I am wondering if there is any experience burning this soft coal (~11,000 btu/lb and 10% ash) in stoker stoves.

One person I talked to that burns it in a Keystoker said his coal hopper has begun smoking on several occasions. From what I understand, the ease with which bituminous coal burns and volatile content makes it difficult to use with stoker stoves, unless the stove is designed to push the coal in from the bottom (like old "stokermatic" stoves). The only way the Keystoker owner could solve his problem was to scrape the "coal tar" off of his ramp every few weeks.

However, the local leisureline dealer said they burn our bituminous without a problem.

Also, the high ash content means I'll have to empty the ash pan more often (5 times more often than anthracite?). Would it be enough to empty the ash pan twice per day? Once per day?

I'm currently considering either a hand-fed stove or a stoker. I don't like the possibility of coming home to a smoke-filled house. But I like the idea of the stoker. Any help or advice would be appreciated.

Thanks - Steinkebunch
Last edited by steinkebunch on Thu Feb 15, 2007 10:58 pm, edited 1 time in total.
steinkebunch
 
Stove/Furnace Make: Homemade Bituminous Hand-Fed
Stove/Furnace Model: Prill underfed stoker Model M8

PostBy: coaledsweat On: Thu Feb 15, 2007 7:55 pm

I think the answer is based on the bituminous that is available. It's quality can vary a great deal, and yes the good stuff will burn very well in your stoker.
coaledsweat
 
Stoker Coal Boiler: Axeman Anderson 260M
Coal Size/Type: Pea

PostBy: Jerry & Karen On: Sat Feb 17, 2007 12:38 pm

Hi Stein,
The best that I can tell you is to talk to our dealer in Riverton. (I think you have). They know more about burning that coal then I do. It seems that the cleaning of the pipes is the big thing. We have sold about 20 or more stoves out there, but only certain coal will work. Riverton Wy CC & T 307.856.5893.
Thanks for asking,
Jerry
PS Freight is murder.
Jerry & Karen
 

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PostBy: Berlin On: Fri Feb 23, 2007 3:31 pm

the key is to design and build a stove from the begenning for bituminous. an underfed stoker with an auger system and a hopper. it would have to controll (keep low) the temp of the combustion bed so that massive clinkers wouldn't form with some bit. coals. the sides of the firbowl would have to have insulating refractory panels or firebrick to to completely burn off the tars that form during the first 20% burn time of average bit. coal. it would also have to have a very simple and accessable firebox/baffel system to allow for easy cleaning of the soot. it would preferably use an 8" flue, 6" is too small. i will make a few of the designs i've drawn up this summer when i have time, i believe there is a serious market out there for a simple and effective bitumionus specifiic stoker.
Berlin
 
Hot Air Coal Stoker Furnace: Will-Burt Combustioneer 77B
Coal Size/Type: Ohio BITUMINOUS pea stoker coal

PostBy: europachris On: Fri Feb 23, 2007 4:01 pm

Berlin wrote: i believe there is a serious market out there for a simple and effective bitumionus specifiic stoker.


YES YES YES there is. Bituminous burns best in a stoker where you can control the amount of fresh coal entering the fire as well as the air flow and combustion temps. It either needs to be a underfed stoker like the classic Combustioneer stove, or a traveling chain grate stoker like the Babcock & Wilcox industrial boilers of the early part of the 1900's. However, an inclined, reciprocating grate, similar to the anthracite stokers, but made of multiple sections that alternately sit in a stairstep fashion but then can reciprocate to an inclined position could work. Might be noisy in the home setting, though. Then, a source of heated secondary air and/or a firebrick ignition arch over the new coal coming in from the stoker would be needed (not needed for the underfed style).

I'd love to design up and build a bituminous stoker. I can get bituminous for 1/3 the cost of anthracite. It's nasty, Illinois bituminous, but burned properly, it's pretty good.

Chris
europachris
 
Stove/Furnace Make: EFM 350/Iron Fireman
Stove/Furnace Model: Custom bituminous burner

Re:

PostBy: steinkebunch On: Fri Dec 14, 2007 5:52 pm

Berlin wrote: i will make a few of the designs i've drawn up this summer when i have time, i believe there is a serious market out there for a simple and effective bitumionus specifiic stoker.


Berlin - Did you ever get some time to draw up some designs?

Steinke
steinkebunch
 
Stove/Furnace Make: Homemade Bituminous Hand-Fed
Stove/Furnace Model: Prill underfed stoker Model M8

Re: Bituminous coal in stoker

PostBy: europachris On: Fri Dec 14, 2007 6:09 pm

I've enquired to Will-Burt about the availability of their residential model (and pricing). One of these days I'm going to figure a way to add central coal heat to our house, and be able to burn the local Illinois coal, of which we have about a gazillion tons, and do it relatively cleanly, which can be done with a proper stoker. I'd install the boiler (prob. have to be custom made - Greg, wanna make me one?) in the garage and run PEX to a heat exchanger in the furnace plenum.

I know it sounds like a crazy idea, but when I can get local coal for $50/ton vs. $300/ton for bagged anthracite, it starts to pay pretty quick!
europachris
 
Stove/Furnace Make: EFM 350/Iron Fireman
Stove/Furnace Model: Custom bituminous burner

Re:

PostBy: coaledsweat On: Fri Dec 14, 2007 6:42 pm

europachris wrote:Might be noisy in the home setting, though. I can get bituminous for 1/3 the cost of anthracite.


I could put up with clunking and banging to heat my house with $300. :)
coaledsweat
 
Stoker Coal Boiler: Axeman Anderson 260M
Coal Size/Type: Pea

Re: Bituminous coal in stoker

PostBy: Berlin On: Thu Jan 10, 2008 2:27 pm

well, i did get time to weld up an interesting design that i completely pulled out of my ass, mostly because it should work in theory and it's super simple to test, but it's not an underfed stoker design, it's like nothing else out there, i would call it a "gravity fed revolving grate stoker" but before i get too excited i'm going to have to get around to testing it out to see if has even a snowball's chance at working properly. i'm pretty much done building it now, i just have to find time and decent weather to test it out, plus picking up that stoker in memphis this week cut into my free time although i'm pretty stoked :P about getting it.
Berlin
 
Hot Air Coal Stoker Furnace: Will-Burt Combustioneer 77B
Coal Size/Type: Ohio BITUMINOUS pea stoker coal

Re: Bituminous coal in stoker

PostBy: italia899 On: Fri Feb 01, 2008 11:57 pm

Berlin,

Have you tested your homemade creation yet?
italia899
 
Stove/Furnace Make: Brunco
Stove/Furnace Model: Hearthglow

Re: Bituminous coal in stoker

PostBy: europachris On: Sat Feb 02, 2008 10:14 am

And how did that stoker from Memphis turn out? What sort of shape is it in? I saw the pics and there were some old vintage goodies tossed in the hopper.
europachris
 
Stove/Furnace Make: EFM 350/Iron Fireman
Stove/Furnace Model: Custom bituminous burner

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