Process and apparatus for treating heterogeneous waste to provid

Details Process and apparatus for treating heterogeneous waste to provid Process and apparatus for treating heterogeneous waste to provid

1993-08-25

1995-02-07

Willis, Jr., Prince

Fuel and related compositions

Consolidated solids

Vegetation or refuse

44605, 44629, 210511, 241 791, C10L 500

Patent

active

053872673

ABSTRACT:
Apparatus and method are described for processing waste into a clean fuel. The waste comprises organic and inorganic portions. A float tank is filed with a liquid, e.g., water, of a selected depth. The waste is introduced into the liquid and separates into its organic portion, which floats near the surface of the liquid, and into its inorganic portion, which falls towards the bottom of the tank. The liquid depth is selected to be sufficiently large to permit the separation of the organic and inorganic portions. Then the organic and inorganic portions are removed. Sufficient liquid is extracted from the separated organic portion to provide the clean fuel. The fuel, illustratively, is formed as pellets. In a further aspect of this invention, further liquid is added to the separated organic portion to form a mixture thereof, which is pulped to provide a slurry thereof of a relatively high moisture content. Liquid is extracted by mechanical means, e.g., belt and/or screw presses, from the slurry to provide the clean fuel of a relatively low, homogeneous liquid content.

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