BigBarney wrote:I am probably the only member of the forum who burn Bituminous coal 24/7/365 and have done so for
over 1 year and have gone through all of the trial and error of this type of coal burning.I burn the same coal
as Berlin,and Pittsburgh seam,and use a under burner coal boiler which has under fire air and an adjustable
secondary air for burning the volatiles in the initial startup of combustion.It is a trial and error process to get this setting
right for a smoke free burn and high efficiency from the many different types of Bituminous coal.
If i burn a Pittsburgh coal which is much more dense I have to almost keep the secondary air
closed like the hard coal burners,it also needs a much higher draft about .o8 to get a clean burn, it likes
a lot of heated under the fire air to burn with a hot and clean flame.The Pittsburgh coal is of very high
quality and never forms any clinkers just white/gray ash of about 8% , the Puxy coal from Valier also has
similar ash and also no clinker.Clinker is from a high ash and lower quality coal not the Western PA coals.
These coals have near 14000 btu/# even more than anthracite.
I keep my boiler at 170/180* and when the air flow is off the chimney is at 100/120* and I can hold my hand
on the pipe one foot above the flue outlet of the boiler.
Do you mind telling me where get your bit?
I found this supplier in PA, http://www.penncoal.com/wst_page2.html
can you recommend which one of these is best?Kentucky Stoker (low ash/sulfur)
Pocahontas #3 Pea & Nut from WV
Cannel from central PA
Pittsburgh ROM (Run of Mine)
Washed Pittsburgh Stoker (1 1/2 x 1/4")
Wahsed Pittsburgh 2 x 5" Nut (sometimes called Egg or Lump)
Pittsburgh Lump (5"+)