"The pre-atomized fuel of claim 1, 2, 3, 4, 5, 21, 28, 29, 30, 31, 32 or 33 wherein the hydrocarbon is a residual oil selected from the group consisting of Number 6 residual fuel oil, California vacuum residual oil, Oklahoma vacuum residual oil, German visbreaker residual oil, Texas visbreaker residual oil, catalytic hydrogenated residual oil, ROSE residual oil, cutback tar and Bunker C oil." . . . .