Systems and methods for processing waste

A system for processing a mixed waste stream including a first material and a second material, the system comprising:

• a first pyrolysis chamber configured to receive the mixed waste stream and heat to generate a first group of pyrolysis products by pyrolyzing the mixed waste stream under conditions configured to cause pyrolysis of the first material and hinder pyrolysis of the second material;
• and
• a second pyrolysis chamber, separate from the first pyrolysis chamber, the second pyrolysis chamber configured to receive heat and a residual waste stream to generate a second group of pyrolysis products by pyrolyzing the residual waste stream under conditions configured to cause pyrolysis of the second material, the residual waste stream being received via the first pyrolysis chamber by separating out the first group of pyrolysis products after pyrolysis of the first material of the mixed waste stream.

A method of generating power using wet biomass, the method comprising:

• combusting a fuel generated by pyrolysis of dried biomass to generate heat and first waste gas, the dried biomass and second waste gas being generated by drying of wet biomass, the first waste gas and second waste gas being used for drying of wet biomass;
• and
• using the heat to generate power.

A pyrolysis system configured to receive material for pyrolysis, comprising:

• a pyrolysis chamber for holding the material during pyrolysis of the material, a solid mass of the material in the pyrolysis chamber being varied due to pyrolysis;
• and
• a screw conveyer disposed inside the pyrolysis chamber and receiving the material to convey the material along the pyrolysis chamber as it is pyrolyzed in the pyrolysis chamber, the screw conveyer including a flight configured to compact the material based on the solid mass of the material during pyrolysis to facilitate pyrolysis.

A method for pyrolyzing material, comprising:

• heating the material in a pyrolysis chamber to pyrolyze the material to vary solid mass of the material;
• and
• compacting the material in the pyrolysis chamber to facilitate pyrolysis as the solid mass of the material is varied due to pyrolysis.