MissMac
Minister of Fire
i'm having some similar issues burning some big hunks of what was an ornamental white spruce tree - very very sappy, and my cat can't seem to keep up with it - getting lots of smoke out the chimney from it. Not sure I'd ever scavenge something similar moving forward as it's burning pretty dirty in my stove.When you are thinking about water vapor and minerals, don't forget cellulose, the stuff we are mostly burning, is a hydrocaron. The end products of (complete) hyrocarbon combustion are CO2 and H2O. Burning bone dry wood still produces water vapor at 600-1000dF, by combing hydrogen in the cellulose with oxygen in the air intake.
I had not, before this thread, considered what component of the smoke stream might be carrying the most minerals into the combustor.
For a first guess I am going to go with burning sap globs. Even in a raging hot stove they give off black smoke in the firebox and incite the combustor to indicated temps notably above ordinary. I have so far this season a golf ball sized and a second baseball sized chunk of dried spruce sap sequestered in the garage. I will be holding onto those until I am ready for a preview of my wife's spring wardrobe of course.
Fascinating question. Drier wood, below 12% for sure, in my experience, makes more smoke and that winter alluded to above was hard on my combustor. I wonder if throttle setting might be a factor as well, as osmium would be more likely to drop out of the smoke stream regardless of carrier molecule when the particle is at a lower velocity and thus has more time to be influenced by gravity.