Patent ID: 6221329
Filing Date: 2001-04-24
Classification: B07B,B29B,B29L,C01P,C09C,C10B,C10G,F23G,Y02P,Y02W

Abstract:
A pyrolysis process for reclamation and recovery of desirable constituent materials from product pieces, the process comprising the steps of:transferring the product pieces from a supply into a pyrolysis chamber;heating the product pieces at a first temperature between 700.degree.-800.degree. C. in a first heating zone of the pyrolysis chamber;transferring the product pieces from the first heating zone to a second heating zone in the pyrolysis chamber;heating the product pieces at a second temperature between 600.degree.-700.degree. C. in the second heating zone, the second temperature being independent from the first temperature;transferring the product pieces from the second heating zone to a third heating zone in the pyrolysis chamber;heating the product pieces at a third temperature in the third heating zone, the third temperature being less than the second temperature; andremoving the product pieces from the pyrolysis chamber and separating the desirable constituent materials.