I remember reading about a nebulizer system way back made of a glass sphere with a .010 slot horizontally cut into it about 3/8" long and was fed air through a stem. Seems like this was experimental back in the 1960's. I played around with a copper version I made to burn used motor oil, the main attraction I remember at the time was it really didn't matter so much about the fuel. nearly any flammable liquid, dirty or clean. As long as it would flow over the ball, it would be nebulized. As I recall, the feed was right at the top of the ball, and was recirculated. Anything that the air blew off was burned.
I wonder is that article is one they have online now.