What Does a Stoker Mechanism Look Like?

A Coal stoker furnace or stove controls most operations including automatically feeding the coal. They are quite similar to any conventional oil and gas units and easily operated for extended periods of time. They commonly use rice coal but may use larger sizes like buckwheat. They can be used as primary heat, supplementary heat or have a dual set up with your existing oil/gas furnace.
HardWood
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Post Fri. Feb. 02, 2007 1:20 pm

Chris,

The only time I ever see smoke out of the chimney is on startup. There is very little smoke when the fire box is burning good. I can open the firebox door to remove clinkers without any smoke coming out.

Greg asked about ash removal and since I have not run long enough I went and asked Jim (he has been burning coal in a stoker for 20 years) and he said I don't have to worry about ash it all melts and fuses together into the clinkers.
Harry Wood
Doing my part for Global Warming.
Staying Warm & Cozy in Ohio

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LsFarm
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Stoker Coal Boiler: Axeman Anderson 260
Hand Fed Coal Boiler: Self-built 'Big Bertha' SS Boiler
Baseburners & Antiques: Keystone 11, Art Garland
Location: Michigan

Post Fri. Feb. 02, 2007 8:33 pm

Hi Harry, so instead of having an ashpan to empty, you remove clinkers from on top of the fire pot???

Greg L.
Burning Pea/Buckwheat through an antique stoker [semi retired SSboiler],
Running an Axeman-Anderson 260M boiler burning Pea, About 150-250#per day
Farming, Fixing, Fabricating and Flying: 'spare time' what's that?

HardWood
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Post Mon. Feb. 05, 2007 6:59 am

Thats correct. The ash melts into a ring around the fire pot. I have to remove ring about 8" dia 2" high 2-4 times a day.
Harry Wood
Doing my part for Global Warming.
Staying Warm & Cozy in Ohio

HardWood
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Post Wed. Feb. 07, 2007 4:28 pm

Chris,
When my stocker is running good (meaning I have not disturbed the fire) I notice little to no smoke, just heat.

I have never had thick black smoke like you discribe.
Harry Wood
Doing my part for Global Warming.
Staying Warm & Cozy in Ohio


HardWood
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Post Thu. Feb. 08, 2007 4:36 pm

Chris,
Here is a shot of my stack. See, no smoke.
Attachments
stocker03 012.jpg
Harry Wood
Doing my part for Global Warming.
Staying Warm & Cozy in Ohio

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europachris
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Stove/Furnace Make: EFM 350/Iron Fireman
Stove/Furnace Model: Custom bituminous burner
Location: N. Central Illinois

Post Thu. Feb. 08, 2007 4:50 pm

Is the stack is the prefab one at the 'corner' of the two roof sections? I thought I could detect the faintest whiff of smoke, but on second look that was just a smudge on my screen.... :roll:

That's really impressive. Looks like Combustioneer had bituminous burning nailed down really well. Too bad they quit making them.

Chris

HardWood
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Post Thu. Feb. 08, 2007 4:54 pm

There is some smoke. The stack is 304 Stainless, now it is black. I can not tell you why my stove burns clean, but it does.

The firebox limit is 200 degrees so that can't be it.
Harry Wood
Doing my part for Global Warming.
Staying Warm & Cozy in Ohio

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europachris
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Stove/Furnace Make: EFM 350/Iron Fireman
Stove/Furnace Model: Custom bituminous burner
Location: N. Central Illinois

Post Thu. Feb. 08, 2007 5:07 pm

I would definitely expect SOME smoke from bituminous, and what you are experiencing would make burning it 'friendly' to the neighborhood, etc.

When we burned it in our hand fired furnace, I recall covering my Mom's freshly washed car in stringy soot particles, and I, of course, was the one who had washed it. I wasn't pleased.

And then, I could tell you about having to help Dad clean all that junk out of the chimney, all 40' of it. I looked like a coal mine exploded. It was not pretty.

Keep that stoker stoking!

Chris


Oo-v-oO
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Stove/Furnace Make: Ashley
Location: Live Free or Die, USA

Post Sat. Feb. 24, 2007 10:56 pm

Excellent pictures and descriptions!
-Lee, KB1GNI
"Felix qui potuit rerum cognoscere causas"
[Happiness is understanding how things work]

twilba666
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Post Tue. Dec. 11, 2007 7:13 pm

iron fireman in my basement when we purchased our home.
do not know if it still works. reference pictures.
free for anyone who can dismantle & clean up after removal
location: Memphis,tn.901 272-7742 / email:[email protected]

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WNY
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Hot Air Coal Stoker Stove: Keystoker 90K, Leisure Line Hyfire I
Coal Size/Type: Rice
Stove/Furnace Make: Keystoker, LL & CoalTrol
Stove/Furnace Model: 90K, Hyfire I, VF3000 Soon
Location: Cuba, NY
Contact:

Post Thu. Dec. 13, 2007 6:59 pm

Couple more I found on the internet, KA6 stoker
Attachments
Key03.jpg
Key04.jpg
- Dave
Hyfire I & Keystoker 90K heating an 1890 Victorian
- Amsoil Authorized T1 Certified Dealer

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CoalHeat
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Stoker Coal Boiler: 1959 EFM 350
Hand Fed Coal Stove: Harman Magnafire Mark I
Baseburners & Antiques: Sears Signal Oak 15 & Andes Kitchen Range
Coal Size/Type: Rice and Chestnut
Other Heating: Fisher Fireplace Insert
Location: Stillwater, New Jersey

Post Fri. Dec. 14, 2007 9:27 pm

LsFarm wrote:More EFM stoker photos
Is that a Buick in the last photo?
Heating a circa 1832 farmhouse with a Harman Magnafire Mark I & a 1959 EFM 350 (heating DHW).
100% Oil Free!
"It's what we learn after we think we know it all that counts."

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coal berner
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Stoker Coal Boiler: 1986 Electric Furnace Man 520 DF
Stove/Furnace Make: Electric Furnace Man
Stove/Furnace Model: DF520
Location: Pottsville PA. Schuylkill County PA. The Hart Of Anthracite Coal Country.

Post Thu. Jan. 29, 2009 12:16 pm

LsFarm wrote:Here is the 'Cadilac' of under feed stokers. This is an EFM unit. It is desigined for anthracite. There are more air holes to feed the fire and the mechanism is adjustable to feed coal at ten different rates from 2.5 to 25# of coal per hour.

These units are still in production in EFM boilers.
This Stoker unit is a EFM S-15 Stoker Out a AF-150 Hot Air Furnace Not The S-20 out of a AP - 520 efm or a DF - 520
Also some of the Early Production AP-350 EFM used this stoker unit . With a differnt Mounting Plate a Flat Plate .
Not the Curve one like in the Photo. The curve Plate is on the Hot Air furnaces only. AF-100 AF 125 AF 150.
This stoker unit has a feed rate of 4 to 7 teeth Max 10 lbs Per Hr. to 17.5 lbs Per Hr. 100.000 to 150.000 BTUH Max
The S-20 Stoker unit has a feed Rate from 1 to 10 teeth 2.5 lbs per hr. to 25 lbs per hr.
To see the Photo's Look at the 4th & 5th Post in the begining of this thread .
J.C.

Heating house & water with a 1986 electric furnace man DF520 using buckwheat Anthracite coal

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