Abstract: The present invention is an improved vortex incinerator suitable for complete or near complete combustion of solid materials, such as coal, waste coal fines, petroleum coke, biomass, waste tires, as well as municipal solid waste. The improvement includes a pulverizer for reducing the aforementioned combustible materials into an appropriate size. In addition to the pulverizer, a further improvement over the aforementioned vortex incinerator is the use of a pneumatic feeder to introduce the pulverized combustible material into the combustion chamber.