Well, a modified burner *is* possible
"Isopropanol is generally available in 91% (9% water) max. at drug stores, and 99% (1% ??? as Iso-HEET) in auto parts shops and gas stations. When the 91% burns, the 9% water is left behind as a puddle."
Ha ha, possible, but really doubtfull. At the heat required for vaporization of the fuel, needed to support any real burning, the water will simply vaporize off too. The only way to get a puddle of water is really dilute the fuel with water down to like 75%, or, like 150 proof for ethanol. Generally, there is a rather complicated formula for figuring out the vapour pressures and temperatures, etc. With any fuel grade alcohols, you won't see a puddle in a well designed stove. But, this does mean a lot of lost heat.
1) The water phase change from liquid to gas takes a lot of heat away from the burner. It will "cool" a stove's output.
2) A eutectic mixture forms, ie, where vapor pressures are equal between alcohol and water, at some temperature. Pure distilled ethanol is not possible, for an example...it only ever gets to be about 95% ethanol/5% water. All miscible liquids do this. Methanol does this, too...sort of an aside.
Soo, if you are using anything with more than 5% water as fuel, chances are you are simply wasting a lot of heat. It just produces a lot of steam that means lost heat. I found that using a general denatured alcohol, like SLX, was much better because this is industrial grade, ie, produced from chemical factories/petrolium factories *without* water. It is as good as everclear and isopronol, due to the larger water content the others have. It lights easier and burns hotter, though slightly less time...about 20secs in 6 minutes. Soo, it is a wash. Send me a link to the exact stove that burns isopropynol cleanly. I have never really seen one...