| Abstrakt: |
The use of plastics in the world is rising every day. Therefore, plastic wastes must be managed. It can be utilized to produce fuel-like petroleum fractions depending on pyrolysis, which is the thermal decomposition of plastics in the absence of oxygen. This work aims to reduce environmental pollution and reuse plastic waste as an alternative fuel source for petroleum products. High-density poly Ethelene (HDPE) was used to produce liquid fuels such as gasoline, kerosene, and diesel. A comparison between the non-catalytic thermal process and catalytic process under the optimum conditions of temperature, pressure, and residence time was made using a laboratory 300 cm3 autoclave reactor with a high load temperature heater. The process was done under high pressure, about 20 bar, and temperature of 450oC with and without adding the Pt/Al2O3 and NiMo/Al2O3 catalysts for an hour as residence time. TGA analysis was made for the plastic. The catalysts were characterized by X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and Energy Dispersive X-ray (EDX). Laboratory experiments were conducted for waste plastics' thermal and catalytic hydrocracking. The fuel products were then analyzed using chromatography/mass spectrometry (GC/MS) to evaluate the quality of the products. The viscosity, density, API gravity, pour point, and flash point of products were also investigated. Most of the liquid fuel was produced in hydrocracking over Pt/Al2O3 catalyst reaction followed by thermal and hydrocracking NiMo/Al2O3 with approximately equal quantities. The amounts of aromatic, unsaturated aliphatic, and saturated aliphatic were also found in the liquid product. [ABSTRACT FROM AUTHOR] |
