An Overview of Physical and Chemical Phenomena

Process Temperature range (°C) Plastic waste Fluidizing gas Output References 

Low-temperature pyrolysis for feedstock recovery 500-600 Single or mixed polyolefins (HDPE, LDPE, PP, PS, PVC), SB rubber Nitrogen liquid-free pyrolysis gas Broad spectrum of products (C1-C50). The gas yield is generally low with respect to waxes and oils [9, 14, 16, 26, 27, 28] 

High -temperature pyrolysis for feedstock recovery 650-800 Polyolefins (HDPE, LDPE, PP, PVC), SB rubber, ABS, PA, PTFE,. .. Nitrogen steam Gas yield is generally high High content of olefins [8, 9, 16, 19, 28, 29, 30, 31] 

Catalytic pyrolysis 370-550 PE, PS, PP Nitrogen Product spectrum strongly depends on the catalyst. Silica-alumina produces high yield of liquids from PE and PP. FCC promotes high gas yield even for PS and PE (waxes fraction decrease from 90 to 1%) [18, 25] 

Temperature Large temperature Temperature is Temperature Longitudinal as well Severe temperature Two zones are  

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