Patent ID: 7371308
Filing Date: 2008-05-13
Classification: C10B,Y02P

Abstract:
1. A process for pyrolyzing hydrocarbon-containing waste products which comprises: providing only one pyrolysis furnace having an openable bottom, an upper end forming a dome, and a double-wall with a helically arranged hot-air helical duct; a discharge pipe leading vertically out the furnace dome; a loading station outside the furnace; a receiving device initially located at the loading station; and an unloading station; introducing a material to be pyrolyzed onto the receiving device; subsequently introducing the receiving device from below into the pyrolysis furnace through the open bottom and thereby tightly closing the bottom of the pyrolysis furnace; heating the furnace to a pyrolysis temperature of approximately between 450° C. and 550° C. with burners generating hot air passing helically from the bottom upward in the pyrolysis furnace through the helically arranged hot-air helical duct; pyrolyzing completely the material thereby producing in-part pyrolysis gases and residues; extracting the hot air at the upper end of the furnace; discharging the pyrolysis gases via the discharge pipe; after pyrolysis has concluded completely, opening the bottom and removing downward the receiving device; moving the receiving device into the unloading station; and discharging the residues at the unloading station.