Ash Content Questions for a Channing III

 
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ashburnham55
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Post by ashburnham55 » Wed. Oct. 29, 2008 7:20 pm

I have a few questions about the % of ash that the the stove is producing. I am burning Blaschak rice in a new DV Channing III. It has been running mainly at idle for close to a mouth now and I have been weighing the ash content and it seems very high at 23%. I thought that it could be a bad batch of coal so I ran out and bought a 150 pounds of Kimmel coal to see if their was a difference and it ended up being pretty much the same at about 21%. I have checked the draft and it is reading -.03 and every other aspect of the stove seems to right on except ash content. I have also noticed that the ash is a equal mixture of fine white powder and some larger granola type ash and their is very little unburnt pieces. I have noticed after breaking open some of the larger pieces of ash you can see that only the outside of the piece is burnt and the middle is still nice and shiny. Not quite sure what would be an acceptable coal to ash ratio for an Alaska Channing.

Any help would be appreciated


 
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Post by James Goodine » Thu. Oct. 30, 2008 8:20 pm

Probably not much help to your questions but I am also burning Blashak rice and aside from the weighing it and the breaking ash apart (wich I will do on my next cleaning) you have described what I have seen too a tee.

 
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Post by ashburnham55 » Thu. Oct. 30, 2008 8:23 pm

Thanks for the reply. I would be very interested in what you end up with.

 
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Post by coal berner » Thu. Oct. 30, 2008 8:37 pm

ashburnham55 wrote:I have a few questions about the % of ash that the the stove is producing. I am burning Blaschak rice in a new DV Channing III. It has been running mainly at idle for close to a mouth now and I have been weighing the ash content and it seems very high at 23%. I thought that it could be a bad batch of coal so I ran out and bought a 150 pounds of Kimmel coal to see if their was a difference and it ended up being pretty much the same at about 21%. I have checked the draft and it is reading -.03 and every other aspect of the stove seems to right on except ash content. I have also noticed that the ash is a equal mixture of fine white powder and some larger granola type ash and their is very little unburnt pieces. I have noticed after breaking open some of the larger pieces of ash you can see that only the outside of the piece is burnt and the middle is still nice and shiny. Not quite sure what would be an acceptable coal to ash ratio for an Alaska Channing.

Any help would be appreciated
You have to weigh the coal going into the stove then weigh the ash that comes out from the amount of coal you burn /put into the stove Then Divide the ash from the amount of coal you burned Blaschak will be 11% to 12% Kimmel will be 9% to 11% Ash content

 
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Post by ashburnham55 » Thu. Oct. 30, 2008 8:58 pm

That is what I have been doing.

Example
After I burn 100 lbs of coal in the stove I have been weighing the ash that is produced and have been hitting around 20 to 22 percent.. I know that this is not even close to what other state so that why I am wondering if their is a problem..Bad coal ? ... Not enough air to the grate ? or maybe that the content is higher when burning in a stoker ?.

Not sure ??
Last edited by ashburnham55 on Thu. Oct. 30, 2008 9:32 pm, edited 2 times in total.

 
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Post by mike » Thu. Oct. 30, 2008 9:03 pm

Are you subtracting the weight of the container your ash or coal is in when you weight it? If not that could through your numbers off quit a bit.

 
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Post by coal berner » Thu. Oct. 30, 2008 9:05 pm

Yes don't forget to subtract the ash tub weight Thanks for catching that Mike I had a brain fart or I Just thought
a Person would know that already :lol:
Last edited by coal berner on Thu. Oct. 30, 2008 9:08 pm, edited 1 time in total.


 
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Post by ashburnham55 » Thu. Oct. 30, 2008 9:08 pm

Yes I have and it weighs just under 2 lbs

 
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Post by ashburnham55 » Thu. Oct. 30, 2008 9:11 pm

Some of the unburnt coal is very brittle.. breaks down to a black powder.. Other larger pieces are just burnt on the outside.

Will you produce more ash at idle?

 
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Post by mike » Thu. Oct. 30, 2008 9:34 pm

I think something is wrong somewhere. I could believe 20% ash from one coal company, it happens from time to time for whatever reason but I can't see it from two. For laughs try giving it some more air and see what it does. You might have to play with the feed after you do that but you should be able to get rid of a lot of that unburnt stuff and drop your ash content down. One more question on how your weighing the coal and ash. Are you actually weighing the coal or are you just going by the printed weight on the bag?

 
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Post by ashburnham55 » Thu. Oct. 30, 2008 9:47 pm

Buy the printed weight on the bag .. I did check the weight of a 40 lb bag of Blaschak and it came out to a little over 41lbs..which I believe is the water weight.

Not quite sure how to adjust the air, It's not on a rheostat. ??

 
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Post by mike » Thu. Oct. 30, 2008 9:52 pm

I'm not sure either how to adjust the air on a Alaska, probably a shutter over the intake somewhere. Somebody will chime in that has one.

 
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Post by ashburnham55 » Thu. Oct. 30, 2008 10:25 pm

I'll call Alaska in the morning and see if they have away to increase the air flow.

 
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Post by James Goodine » Fri. Oct. 31, 2008 8:39 pm

I broke down some of my ash tonight and I am seeing the same thing as you. The bigger peices are hard and after breaking them apart the inside is still black and looks like unburnt coal. I'm new to coal so I'm not sure if this is normal but I wouldn't think that there should be any black left should there? Did you get in touch with Alaska and what did they say?

 
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Post by ashburnham55 » Fri. Oct. 31, 2008 9:18 pm

I ended up calling on my way home from work , around 4 PM and ended up getting an answering machine. I'll try again in the morning. I guess they are open to noon time on Saturdays.

I am not overly concerned..It seems to be working pretty well..I am thinking as Mike sugested that I might need to adjust the air.

Did you get a chance to check the ash percentage ?


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