Method and system for producing refined hydrocarbons from waste plastics

Abstract

Embodiments of the present disclosure relate to a method for producing refined hydrocarbons from waste plastics, the method including: a pretreatment process of pretreating waste plastics; a pyrolysis process of producing pyrolysis gas by introducing the waste plastics pretreated in the pretreatment process into a pyrolysis reactor; a lightening process of producing pyrolysis oil by introducing the pyrolysis gas into a hot filter; and a distillation process of distilling the pyrolysis oil to obtain refined hydrocarbons, wherein a liquid condensed in the hot filter is re-introduced into the pyrolysis reactor, and a system for producing refined hydrocarbons from waste plastics.

What is claimed is: 
     
         1 . A system for producing refined hydrocarbons from waste plastics, the system comprising:
 a pretreatment device pretreating waste plastics;   a pyrolysis reactor for producing pyrolysis gas by introducing the waste plastics pretreated in the pretreatment device;   a hot filter for producing pyrolysis oil by introducing the pyrolysis gas;   a connection pipe connecting the hot filter and the pyrolysis reactor so that a liquid condensed in the hot filter is re-introduced into the pyrolysis reactor; and   a distillation device distilling the pyrolysis oil to obtain refined hydrocarbons.   
     
     
         2 . The system of  claim 1 , wherein the hot filter is filled with beads. 
     
     
         3 . The system of  claim 2 , wherein the beads include at least one selected from the group consisting of silica sand (SiO 2 ) and aluminum oxide (Al 2 O 3 ). 
     
     
         4 . The system of  claim 1 , further comprising at least two heaters provided outside the hot filter.