7-3-3 Catalytic Liquefaction of Waste Plastics Using Granulated Blast Furnace Slag

Abstract

Liquefaction of waste plastic is a one of feedstock recycling technology. Especially, catalytic cracking system with spent FCC catalyst gives higher yield and higher quality oils than thermal degradation process. Granulated blast furnace slag(GBF slag) contains mainly SiO₂, Al₂O₃ and CaO that is similar with zeolite(aluminosilicate) in FCC catalyst. In this study, granulated blast furnace slag was used for catalytic liquefaction as alternative spent FCC catalyst. The granulated blast furnace slag gave higher yield and lower carbon number products than pyrolysis. However, this result is lower than spent FCC catalyst that is given via different mechanism.