Yellow flames

Yellow flames

PostBy: JB Sparks On: Tue Mar 03, 2009 3:12 pm

I know this has been discussed before but, i can't locate where it is. Basically i have a new coal supply and when it is getting started I see mostly yellow flames with a little blue mixed in. When I was burning kimmels it was all blue flames. What is the difference between these coals? This isn't a problem as the new coal does burn hot. The ash is very course though.
JB Sparks
 
Stove/Furnace Make: Harman - Chubby
Stove/Furnace Model: Harman: SF160 - Chubby Sr.

Re: Yellow flames

PostBy: coal berner On: Tue Mar 03, 2009 3:31 pm

JB Sparks wrote:I know this has been discussed before but, i can't locate where it is. Basically i have a new coal supply and when it is getting started I see mostly yellow flames with a little blue mixed in. When I was burning kimmels it was all blue flames. What is the difference between these coals? This isn't a problem as the new coal does burn hot. The ash is very course though.

Yellow flame coal More volatiles & fines lower carbon content in the coal.
Blue flame coal as a higher carbon content in it less volatiles in the coal .
coal berner
 
Stoker Coal Boiler: 1986 Electric Furnace Man 520 DF
Stove/Furnace Make: Electric Furnace Man
Stove/Furnace Model: DF520

Re: Yellow flames

PostBy: JB Sparks On: Tue Mar 03, 2009 3:33 pm

Thanks coalberner, What mines is this type of coal coming from?
JB Sparks
 
Stove/Furnace Make: Harman - Chubby
Stove/Furnace Model: Harman: SF160 - Chubby Sr.

Visit Hitzer Stoves

Re: Yellow flames

PostBy: coal berner On: Tue Mar 03, 2009 4:04 pm

JB Sparks wrote:Thanks coalberner, What mines is this type of coal coming from?

It will depend on the vein of coal aswell many coal companies are in the same veins of coal .
There are only so many veins of coal depending on the coal field that the company is mining in many will be in the same coal fields. So they will be in the same vein of coal . There are three big fields and one small field . look at the link
below you have the Southeran field the Middle Easteran field the Middle Western field the Northern field .

http://en.wikipedia.org/wiki/Coal_Region
coal berner
 
Stoker Coal Boiler: 1986 Electric Furnace Man 520 DF
Stove/Furnace Make: Electric Furnace Man
Stove/Furnace Model: DF520

Re: Yellow flames

PostBy: JB Sparks On: Tue Mar 03, 2009 4:15 pm

Thanks J.C. That answers my question. One of these days i'll have to take a ride down to coal country and look around. Been reading the thread on the history of coal, it is so interesting.
JB Sparks
 
Stove/Furnace Make: Harman - Chubby
Stove/Furnace Model: Harman: SF160 - Chubby Sr.

Re: Yellow flames

PostBy: hyway61 On: Sat Mar 07, 2009 11:36 am

So, with bluer flame coal having more carbon can we assume it has slightly higher btu ouput..?


hyway61
hyway61
 
Stove/Furnace Make: Russo
Stove/Furnace Model: C-55

Re: Yellow flames

PostBy: JB Sparks On: Sat Mar 07, 2009 1:09 pm

I haven't noticed any detectable difference in heat output but, the coal that is puting out yellow flames seems to be boardering on stove size coal as apposed to the kimmels that had a lot of pea size in it. supposedly stove size runs hoter than nut size according to what i read on this forum. Bottom line is both are keeping the house nice and toasty. I was just curious what the difference was, and now i know thanks to J.C. the coal guru. :)
JB Sparks
 
Stove/Furnace Make: Harman - Chubby
Stove/Furnace Model: Harman: SF160 - Chubby Sr.

Re: Yellow flames

PostBy: Pete69 On: Sat Mar 07, 2009 8:11 pm

When I leave the ash door open and let the air really blast through the coal bed, the coal that usually puts off a blue flame turns to a orange/yellow flame in the spots where the air flowed through the most and turned the coal the hottest. Then when it settles down it turns blue again. Maybe the higher combustion rate released more volatiles??? Maybe the air fuel(gasses) mixture above those hot spots is not optimal??? Maybe both??? Maybe none of the above!!!
Pete69
 
Stove/Furnace Make: Baker/Vermont Castings/Chubby
Stove/Furnace Model: fireside /VigilantII/Chubby

Re: Yellow flames

PostBy: Berlin On: Sun Mar 08, 2009 12:29 am

more air blows more ash/fly ash into the flame from the fuel bed, this causes the ash particles to become hot and glow thus producing the "orange flame"; the blue flame is still there, you just can't see it over the light eminating from the very incandescent ash particles. anthracite with more fines will create more orange flames, penn anth has such a low volitile content and volitile content variability that a variation of 1 or 2% won't make a noticable visable difference in burning characteristics, but an increase in fines, debris, or coal dust will.
Berlin
 
Hot Air Coal Stoker Furnace: Will-Burt Combustioneer 77B
Coal Size/Type: Ohio BITUMINOUS pea stoker coal

Visit Hitzer Stoves