In today's America, with the ever rising cost of housing, education and healthcare, affordability is king.
Waste tires are very affordable and is being successfully used in cement kilns and glass factories because these process involve alkaline substrates that absorb SO2 into the final product.
Unfortunately, most people burning waste tires in an outdoor wood boiler don't burn them in the right way, releasing black smoke and noxious gas pollution, that is way more than the smell of SO2. I believe the noxious gas is H2S and organosulfur, which could be burnt to SO2 if fully combusted.
I believe the reason is they are burning it too fast on the bed, and without enough oxygen supply. We generally want lower bed (primary) temperature and higher cyclone (secondary) temperature.
Some people use a taller flue pipe up to 10 ft to disperse smoke away from ground level, but does this tall flue pipe generate too much draft that draws out the fuel too soon, before it could fully react with oxygen?
How should outdoor wood boilers be adjusted to minimize tire burning pollution?