Analysis of physical and microstructure liquid fuels from waste plastic pyrolysis polypropylene

Samosir, Rahmad; Simanjuntak, Sutan Lmh; Budiarto,

doi:10.1088/1757-899x/420/1/012056

Cited by 2 publications

(1 citation statement)

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“…The pyrolysis results of PP polymer in a batch reactor were achieved with a temperature of 380 • C. The ratio of oil obtained was 80.1 wt%, while the gas and solid ratios were 6.6 and 13.3 wt%, respectively. Pyrolysis of PP was performed by Samosa et al [6] at a temperature of 350 • C, and the product was a liquid oil with a density of 0.8204 g/cm 3 . GC/MS analysis confirmed that the compounds obtained from the thermal cracking had carbon chains between C 7 and C 27 , which was an indication that this compound is a mixture of kerosene (C 8 to C 19 )-diesel (C 7 to C 27 ) fractions.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Polypropylene Waste Recycling Products as Alternative Fuels through Non-Catalytic Thermal and Catalytic Hydrocracking Using Fresh and Spent Pt/Al2O3 and NiMo/Al2O3 Catalysts

Al-Iessa,

Al-Zaidi,

Almukhtar

et al. 2023

Energies

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In this work, the conversion of waste polypropylene to alternative fuels (liquid and gas) was performed through non-catalytic thermal and catalytic hydrocracking over NiMo/Al2O3 and Pt/Al2O3 catalysts. The process was carried out in an autoclave batch reactor at a temperature of 450 °C and a pressure of 20 bar, which were selected based on experimental optimization. The spent catalyst was also successfully regenerated at 700 °C under a hot airflow. Experiments were conducted to determine the optimum conditions to completely separate the deactivated catalyst from the solid residue easily. The regenerated catalyst was reused to facilitate the economic cost reduction of the process. The reactivated catalysts have almost the same catalytic properties as the fresh catalysts; this was confirmed by several characterization techniques, such as TGA, XRD, SEM, EDX, BET and FTIR. The produced liquids/gases were quantified and classified into their fractions by the number of carbon atoms and gasoline to diesel ratio using GC/MS. The viscosity, density, API gravity, pour point and flash point of oil cuts were also investigated to evaluate the quality of the resulting liquid from the reactions. The NiMo/Al2O3 catalyst gave the highest liquid hydrocarbons yield of 86 wt%, while the highest weight products of gasoline range hydrocarbon fractions of 49.85 wt% were found over the Pt/Al2O3 catalyst. Almost the same catalytic behavior was found with the regenerated catalysts compared to the fresh catalysts. However, the highest gaseous products at 20.8 wt% were found in the non-catalytic thermal products with an increase in the diesel fuel range of 80.83 wt%. The kinetic model was implemented using six lumps and fifteen reactions, and the apparent activation energies for the gasoline and diesel fractions were calculated. In general, all primary and secondary reactions show greater activation energy values on the Pt/Al2O3 catalyst than on the NiMo/Al2O3 catalyst.

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Section: Introductionmentioning

confidence: 99%