Experimental Study of Thermal and Catalytic Pyrolysis of Plastic Waste Components

Sustainability

Lars-Andre Tokheim¹  AzubuikeFrancis Anene¹  SiwBodil Fredriksen²  KaiArne Sætre² 

[1] Department of Process, Energy and Environmental Technology, University of South-Eastern Norway, 3918 Porsgrunn, Norway;Norner Research AS, 3962 Stathelle, Norway;

关键词: thermal pyrolysis;    catalytic pyrolysis;    TGA;    plastics;    HDPE;    LDPE;    gasoline;    diesel;    catalyst;   

DOI  :  10.3390/su10113979

来源: DOAJ

【 摘 要 】

Thermal and catalytic pyrolysis of virgin low-density polyethylene (LDPE), high-density polyethylene (HDPE), polypropylene (PP) and mixtures of LDPE/PP were carried out in a 200 mL laboratory scale batch reactor at 460 °C in a nitrogen atmosphere. Thermogravimetric analysis (TGA) was carried out to study the thermal and catalytic degradation of the polymers at a heating rate of 10 °C/min. The amount of PP was varied in the LDPE/PP mixture to explore its effect on the reaction. In thermal degradation (TGA) of LDPE/PP blends, a lower decomposition temperature was observed for LDPE/PP mixtures compared to pure LDPE, indicating interaction between the two polymer types. In the presence of a catalyst (CAT-2), the degradation temperatures for the pure polymers were reduced. The TGA results were validated in a batch reactor using PP and LDPE, respectively. The result from thermal pyrolysis showed that the oil product contained significant amounts of hydrocarbons in the ranges of C₇⁻C₁₂ (gasoline range) and C₁₃⁻C₂₀ (diesel range). The catalyst enhanced cracking at lower temperatures and narrowed the hydrocarbon distribution in the oil towards the lower molecular weight range (C₇⁻C₁₂). The result suggests that the oil produced from catalytic pyrolysis of waste plastics has a potential as an alternative fuel.

【 授权许可】

Unknown