Patent ID: 8047144

Claim:
A method comprising the steps of: heating waste material at a first temperature, the heating of the waste material resulting in the release of vapors and remaining waste material; heating at least some of the remaining waste material at a second temperature, the heating of the remaining waste material resulting in the release of additional vapors; processing the vapors, comprising the steps of: scrubbing the vapors in a first Venturi scrubber; and condensing a portion of the vapors to produce condensate and non-condensable vapors; processing the additional vapors, comprising the steps of: scrubbing the additional vapors in a second Venturi scrubber; and condensing a portion of the additional vapors to produce additional condensate and additional non-condensable vapors; combining the non-condensable vapors and the additional non-condensable vapors; and scrubbing the combined non-condensable vapors in a second-stage Venturi scrubber.