Pyrolytic decomposition apparatus and method for pyrolytically decomposing organic substances

Abstract

A pyrolytic decomposition apparatus mainly comprising: an inlet system for incorporating an object; a pyrolysis system having at least one heating chamber and a heating means which pyrolytically decomposing the object within incorporated from the inlet system; a recovery and cooling system which recovers a part of the gas generated due to the pyrolytic decomposition as an oil component through a pipe; and a gas temperature adjusting system, which makes heat exchange between a part of the gas from the recovery system and a part of the gas from pyrolysis system to allow the pyrolytically decomposed gas at a prescribed temperature for flowing into the pyrolysis system is disclosed. The apparatus is characterized in that said apparatus has a nonflammable gas supply means which supply a nonflammable gas into the pyrolytically decomposed gas as a carrier gas circulated with the apparatus.

1 . A pyrolytic decomposition apparatus comprising:
 an inlet system for introducing an object;   a pyrolysis system having at least one heating chamber and a heating means for pyrolytically decomposing the object introduced by the inlet system;   a recovery and cooling system which recovers a part of the gas generated due to the pyrolytic decomposition as an oil component through a pipe; and   a gas temperature adjusting system, which allows heat exchange between a part of the gas from the recovery system and a part of the gas from the pyrolysis system to allow the pyrolytically decomposed gas attain a prescribed temperature before flowing into the pyrolysis system;   said apparatus having a nonflammable gas supply for supplying a nonflammable gas into the pyrolytically decomposed gas as a carrier gas circulated with the apparatus.   
   
   
       2 . The apparatus as claimed in  claim 1 , wherein said nonflammable gas supply means is also connected to the pipe downstream of the pyrolytic system. 
   
   
       3 . The apparatus as claimed in  claim 1 , wherein said apparatus further comprises a separator for separating the nonflammable gas from the gas from the pyrolysis system and re-using the separated nonflammable gas as the carrier gas. 
   
   
       4 . The apparatus as claimed in  claim 1 , wherein said nonflammable gas comprises nitrogen. 
   
   
       5 . The apparatus as claimed in  claim 1 , which is used for separating hydrocarbon originated substances from a nonflammable substance or a substance having a melting point higher than the pyrolytically decomposed temperature. 
   
   
       6 . The apparatus as claimed in  claim 1  which is used for a liquefaction/carbonization apparatus which converts solid organic substance into an oil and hydrocarbon gas. 
   
   
       7 . The apparatus as claimed in  claim 6 , wherein said solid organic substance comprises at least one member selected from the group consisting of waste plastics, waste tires, organic wastes and medical wastes. 
   
   
       8 . A method for pyrolytically decomposing an organic substance in a pyrolysis apparatus, the method comprising:
 incorporating an organic substance into a pyrolysis zone heated at a prescribed temperature to decompose the organic substance into hydrocarbon gas, an oil on which hydrocarbon is based, and the residual carbon; and   circulating the resulting hydrocarbon gas heated at a prescribed temperature through a heat exchanger;   said method is characterized by incorporating a nonflammable gas into a place upstream of said pyrolysis zone.