[Stoves] Clinker Formation

[Crispin Pemberton-Pigott]

Dear Shailendra

What you describe is what happens when there is a flux present - probably more than one. A flux reduces the melting temperature and it is not a surprise that you have a clinker problem. It may well be glass, not ash in the mineral sense but of course glass is a mineral.

Perhaps Alex English will comment because he has made more glass accidentally than most of us put together.

Roger Samson showed us that leaving switchgrass outside through the winter removed Cl and K by leaching. The problem went away.

Another possibility is to change the combustion to try and prevent the temperature ‎rising so high. That would involve cooling the char burning zone by not preheating the primary air, just as an example.

Regards
Crispin



BBM 2B567C3
‎
Dear All,

We in India are trying to find a solution to the clinker problem in the
stoves as the temperature reaches above 1000 degrees very soon in a 30KW
stove for example. Now the pellets we are using are mainly bagasse based,
and its ash melting point is above 1000 degrees but still it is not giving
the right result. The pellets are not made of 100% bagasse and the size we
are using is 8mm.

Please give your inputs/suggestions if this problem can be solved by
adjusting the primary secondary air or we need to change the composition of
the pellets.

Regards
Shailendra
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