Abstract: An improved method and apparatus for pyrolyzing waste materials and recovering useful chemical and energy rich materials therefrom. The apparatus of the invention comprises a specially designed, rotatable pyrolysis chamber and a cooperating rotatable moisture reduction chamber which pretreats the refuse prior to its introduction into the pyrolysis chamber. The pyrolysis chamber and the moisture reduction chamber are uniquely interconnected so that a portion of the heat of combustion of the refuse is taken from the pyrolysis chamber and controllably introduced into the moisture reduction chamber to reduce the moisture content of the refuse which is continuously received therein. The outlet of the moisture reduction chamber is interconnected with the inlet of the pyrolysis chamber so that, in operation, the refuse received into the pyrolysis chamber is controllably pre-dried prior to pyrolysis.

Abstract: An improved method for pyrolyzing waste materials and recovering useful chemical and energy rich materials therefrom. The apparatus of the invention includes a specially designed, rotatable combustion chamber and embodies a highly novel means for withdrawing a portion of the combustion gases generated by the pyrolysis of the waste materials, mixing these gases with preheated air in carefully controlled proportions and then using the highly combustible gaseous mixture thus formed to sustain pyrolysis within the combustion chamber.

Abstract: An improved method and apparatus for pyrolyzing waste materials and recovering useful chemical and energy rich materials therefrom. The apparatus of the invention includes a specially designed, rotatable combustion chamber and embodies a highly novel means for withdrawing a portion of the combustion gases generated by the pyrolysis of the waste materials, mixing these gases with preheated air in carefully controlled proportions and then using the highly combustible gaseous mixture thus formed to sustain pyrolysis within the combustion chamber.