System for producing fuel pellets
First Claim
1. A system for producing fuel pellets from dry and friable waste materials comprising:
- a shredder including separate devices rotating on a common shaft for cutting and boating incoming materials to expose a fibrous content thereof, and an assembly of fixed screen bars through which the cut and beaten material is projected to determine its size;
means for temporarily storing materials received from the shredder;
means for creating an airstream to convey the materials from the shredder to the storing means;
a densifier connected to the storing means to receive material therefrom and to compress it into a densified mat;
a pelleting press connected to the densifier and having an annular die and one or more press rollers co-operating with the die;
means for directing the material entering the press into the nip between the die and the or each press roller; and
means for cutting the material extruded from the die into pellets.
1 Assignment
0 Petitions
Accused Products
Abstract
A system for converting selected commercially or industrially derived waste materials in a generally dry and friable form, into a pelleted fuel product, comprising an input conveyor (10), a primary breaker (11) for breaking and reducing the incoming materials, a levelling drum (38), a magnetic drum (43) for extracting ferrous objects from the stream of materials, a shredder (16) from which shredded, cut and screened materials are directed by an air stream into a collecting bin (18) from which they are fed to a densifier (21) which creates a denser stream of materials to be fed to a pelleting press (22) from which the pelleted fuel product is taken via output conveyor (23).
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Citations
15 Claims
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1. A system for producing fuel pellets from dry and friable waste materials comprising:
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a shredder including separate devices rotating on a common shaft for cutting and boating incoming materials to expose a fibrous content thereof, and an assembly of fixed screen bars through which the cut and beaten material is projected to determine its size; means for temporarily storing materials received from the shredder; means for creating an airstream to convey the materials from the shredder to the storing means; a densifier connected to the storing means to receive material therefrom and to compress it into a densified mat; a pelleting press connected to the densifier and having an annular die and one or more press rollers co-operating with the die; means for directing the material entering the press into the nip between the die and the or each press roller; and means for cutting the material extruded from the die into pellets. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A process for producing fuel pellets from dry and friable waste materials, comprising the steps of cutting, shredding and screening incoming materials;
- conveying and temporarily storing the screened materials;
feeding the materials from the container into a densifier and therein increasing the density of said stream of materials; and
passing the densified materials to a pelleting press in which they are extruded through a die and cut into pellets. - View Dependent Claims (13, 14, 15)
- conveying and temporarily storing the screened materials;
Specification