coal quality and fly ash

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coal quality and fly ash

PostBy: robb On: Tue Jan 15, 2013 10:20 pm

I have a Hitzer 608 Stoker. I changed coal suppiers this year. After burning since end of Octoer/beginning of November I noticed about days ago I got that sulfur rotten egg smell almost constantly. So I took stove pipe off and there was enough fly ash at flue collar on top of stove that it was almost completely closed off. I have never had this happen in the 3 years of owning my stove. Can coal quality lead to an increase of fly ash?
robb
 
Stove/Furnace Make: Hitzer
Stove/Furnace Model: 608 stoker

Re: coal quality and fly ash

PostBy: 2001Sierra On: Tue Jan 15, 2013 11:30 pm

For sure! White ash coal has way more fly ash than red ash coal. I ran a hand fed for 28 years and stopped sweeping the chimney because nothing really came out that did not already fall to the base. In came the Keystoker 90 stoker and after 2 years I was embarassed at how much ash swept out of the chimnney, almost a scary amount. I burn mostly white ash coal. I now sweep the chimney every year :oops: Who would of thunk the stoker would of been such a drastic change.
2001Sierra
 
Hot Air Coal Stoker Stove: Keystoker 90 Chimney vent
Coal Size/Type: Rice
Other Heating: Buderus Oil Boiler 3115-34
Stove/Furnace Model: Keystoker 90 Chimney Vent

Re: coal quality and fly ash

PostBy: Rob R. On: Wed Jan 16, 2013 12:14 pm

The amount of flyash produced can vary from one coal source to another, or even from one load to the next depending on variability of the raw product.

Stokers tend to produce more fly ash because of the air velocity through the coal.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Coal Size/Type: Rice/buck
Other Heating: Dad's 1953 EFM Highboy

Visit Lehigh Anthracite

Re: coal quality and fly ash

PostBy: fastcat On: Wed Jan 16, 2013 5:16 pm

How has the wind been in your area this year? Here it has not blown as much or as hard this year as in past years and I have had to clean my T on the back of the stove which I have never had more than 1/4" in the bottom.
fastcat
 
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Blaschak Nut/Stove Mix

Re: coal quality and fly ash

PostBy: Rob R. On: Wed Jan 16, 2013 10:41 pm

Tonight I decided to pull the flue pipe off my EFM and check it for flyash...it was 50% full! Different coal this year, lot more flyash. Guess I should set a better example and check the pipes more often.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Coal Size/Type: Rice/buck
Other Heating: Dad's 1953 EFM Highboy

Re: coal quality and fly ash

PostBy: lsayre On: Wed Jan 16, 2013 10:44 pm

Rob R. wrote:Tonight I decided to pull the flue pipe off my EFM and check it for flyash...it was 50% full! Different coal this year, lot more flyash. Guess I should set a better example and check the pipes more often.


Does the lead-up to taking a clean-out cap off for flue pipe cleaning require a full shutdown, or merely a decent draft?
lsayre
 
Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Anthracite Pea
Other Heating: Resistance Boiler (if I ever get it fixed)

Re: coal quality and fly ash

PostBy: Rob R. On: Wed Jan 16, 2013 10:48 pm

I just switch the stoker off, vacuum, then switch it back on.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Coal Size/Type: Rice/buck
Other Heating: Dad's 1953 EFM Highboy

Re: coal quality and fly ash

PostBy: lsayre On: Thu Jan 17, 2013 7:08 am

So decent draft and power off it is. Thanks!
lsayre
 
Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Anthracite Pea
Other Heating: Resistance Boiler (if I ever get it fixed)

Re: coal quality and fly ash

PostBy: coalkirk On: Thu Jan 17, 2013 3:25 pm

If you use T's with caps instead of elbows, it's a snap. I've got one at the top into the chimney and one at the bottom into the boiler. Takes less than a minute with no shut down. You do suck a little flue gas out but no big deal.
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I've cleaned mine out twice so far this season.
coalkirk
 
Stoker Coal Boiler: Harman VF3000
Coal Size/Type: antrhcite/rice coal

Re: coal quality and fly ash

PostBy: freetown fred On: Thu Jan 17, 2013 5:56 pm

Nice ck. If I wasn't straight up through the house I'd definitly use that set up--cudoes dude :)
freetown fred
 
Hand Fed Coal Stove: HITZER 50-93
Coal Size/Type: BLASCHAK Nut/Stove mix

Re: coal quality and fly ash

PostBy: fastcat On: Thu Jan 17, 2013 8:27 pm

freetown fred wrote:Nice ck. If I wasn't straight up through the house I'd definitly use that set up--cudoes dude :)


Fred your stove doesn't exit out the back? Use a T there instead of an elbo. :D
fastcat
 
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Blaschak Nut/Stove Mix

Re: coal quality and fly ash

PostBy: Frackstoker On: Mon Oct 07, 2013 3:09 pm

coalkirk wrote:If you use T's with caps instead of elbows, it's a snap. I've got one at the top into the chimney and one at the bottom into the boiler. Takes less than a minute with no shut down. You do suck a little flue gas out but no big deal.
taped joints.jpg

I've cleaned mine out twice so far this season.


Sounds like a good plan! Thanks everyone. Where should the baro-damper be located for the T set-up?
Frackstoker
 
Hot Air Coal Stoker Stove: Keystoker 90
Coal Size/Type: Rice - Blashack
Other Heating: Oil Boiler

Re: coal quality and fly ash

PostBy: Bear038 On: Sun Oct 13, 2013 10:35 am

Coalkirk, just saw your idea for the Tee as a clean out. On my way to the supply house, it will be done by this evening :D
Bear038
 
Stove/Furnace Make: Harman
Stove/Furnace Model: Mark II

Re: coal quality and fly ash

PostBy: coalkirk On: Sun Oct 13, 2013 12:13 pm

Bear038 wrote:Coalkirk, just saw your idea for the Tee as a clean out. On my way to the supply house, it will be done by this evening :D


Well I can't take credit for the idea. Honestly don't remember who I copied it from but it works great. Pop off that end cap, shove the shop vac wand in and done in a few seconds with no shut down. I've got the same arrangement at the bottom where the vent exits the boiler just above it is another T with the Baro.
coalkirk
 
Stoker Coal Boiler: Harman VF3000
Coal Size/Type: antrhcite/rice coal

Re: coal quality and fly ash

PostBy: Bruce M On: Mon Oct 14, 2013 4:33 pm

I just ordered a Tee fitting also, tired of dealing with the double wall elbow. The double wall Tee was about $75 with shipping but it will be worth it if it causes less frustration, Those damned elbows always spin out of whack and with the double walls is just frustrating as all heck.
Bruce M
 
Hand Fed Coal Stove: DS Machine 1627 basement stove

Visit Lehigh Anthracite