Variable speed pyrolytic waste treatment system

Abstract

The inventive subject matter is directed toward a pyrolytic waste treatment system comprising a pyrolysis chamber and a movement mechanism adapted to move waste through the pyrolysis chamber at different speeds along the length of the pyrolysis chamber.

1 . A pyrolytic waste treatment system, comprising: 
 a pyrolysis chamber;    a first rotating common shaft disposed within the the pyrolysis chamber;    a screw blade disposed on a first section of the common shaft adapted to move a waste through the pyrolysis chamber at a first speed partially determined by a first pitch of the blade;    a first paddle disposed on the common shaft having a second pitch to move waste at a second speed;    a second paddle disposed on the common shaft having a third pitch to move waste at a third speed; and    wherein the second pitch and the third pitch are angled differently from each other such that the second speed and third speed are also different from each other.    
     
     
         2 . The system of  claim 1 , wherein at least one of the first, second, or third pitch is angled to move the waste through the pyrolysis chamber at a faster rate near an inlet and an outlet of the chamber relative to a center portion of the chamber.  
     
     
         3 . The system of  claim 1 , wherein the first pitch is varied along the length of the screw blade to move the waste at different speeds along a length of the first section.  
     
     
         4 . The system of  claim 1 , wherein in the second pitch is angled to move the waste through the pyrolysis chamber in a direction towards a waste inlet, and the third pitch is angled to move the waste through the pyrolysis chamber in a direction away from the waste inlet.  
     
     
         5 . The system of  claim 1  further comprising a brush disposed on the common shaft to brush against a chamber wall of the pyrolysis chamber.  
     
     
         6 . The system of  claim 1  further comprising a second rotating common shaft disposed adjacent and parallel to the first rotating common shaft within the pyrolysis chamber.  
     
     
         7 . A pyrolytic waste treatment system, comprising: 
 a pyrolysis chamber;    a rotating common shaft disposed within the pyrolysis chamber;    a screw blade disposed on the common shaft adapted to move a waste through the pyrolysis chamber at a speed partially determined by a first pitch of the blade;    a paddle disposed on the common shaft wherein the paddle has a general configuration that is substantially parallel to a center axis of the common shaft; and    wherein the general configuration increases a residence time of the waste in the chamber.    
     
     
         8 . The system of  claim 7 , wherein the general configuration is a scoop.  
     
     
         9 . The system of  claim 7 , wherein the general configuration is a plow.  
     
     
         10 . The system of  claim 7 , wherein the general configuration is a flat panel.  
     
     
         11 . A method of pyrolyzing waste in a pyrolysis chamber comprising: 
 providing a movement mechanism disposed within the chamber adapted to move a waste through the chamber at different rates of speed;    wherein the movement mechanism comprises a rotating common shaft;    wherein the movement mechanism further comprises a screw conveyer, a first paddle, and a second paddle, all of which are coupled to the common shaft;    wherein the first paddle is angled to move the waste towards an outlet at a first speed; and    wherein the second paddle is angled to move the waste towards an outlet at a second speed slower than the first speed.    
     
     
         12 . The method of  claim 11  further comprises increasing a waste residence time by having a second paddle angled to move waste in a direction towards an inlet.  
     
     
         13 . The method of  claim 11  further comprises increasing a waste residence time by having a second paddle oriented substantially parallel to a center axis of the common shaft.  
     
     
         14 . The method of  claim 11  further comprises keeping a carbon char intact by using a scoop configuration for the first paddle.  
     
     
         15 . The method of  claim 11  further comprises keeping a carbon char intact by using a plow configuration for the first paddle.  
     
     
         16 . The method of  claim 11  further comprises keeping a chamber floor relatively free of waste by brushing the chamber floor with a brush disposed on the common shaft.