Abstract: A control system for the incineration of pollutants in waste gases which will conserve fuel consumption and which embodies feed back signals from temperature sensing means and/or gas analyzing means in connection with the combustion gases to detect an undesired temperature deviation from a control temperature or, alternatively, detect excessive unburned pollutants and utilize optimizing-controller means to receive the resulting output signals and, in turn, provide incremental control changes to effect a change in the temperature control level and the incremental stepping down or stepping up of a set point for the control of fuel flow to the heat supplying burner of the incineration zone.