Investigation on the long-term effects of plastic pyrolysis oil usage in a diesel engine

Kalargaris, Ioannis; Tian, Guohong

doi:10.1016/j.egypro.2017.12.009

Cited by 13 publications

(6 citation statements)

References 11 publications

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“…Disposal and upgrading of plastic waste is one of the main challenges of the 21st century [1,2]. Chemical recycling as an alternative to landfill through (catalytic) pyrolysis [3][4][5] is a very promising conversion technology to produce liquid energy carriers, waxes, and chemicals while minimizing negative impacts on the environment [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Detailed Group-Type Characterization of Plastic-Waste Pyrolysis Oils: By Comprehensive Two-Dimensional Gas Chromatography Including Linear, Branched, and Di-Olefins

2021

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Plastic-waste pyrolysis oils contain large amounts of linear, branched, and di-olefinic compounds. This makes it not obvious to determine the detailed group-type composition in particular to the presence of substantial amounts of N-, S-, and O-containing heteroatomic compounds. The thorough evaluation of different column combinations for two-dimensional gas chromatography (GC × GC), i.e., non-polar × polar and polar × non-polar, revealed that the second combination had the best performance, as indicated by the bi-dimensional resolution of the selected key compounds. By coupling the GC × GC to multiple detectors, such as the flame ionization detector (FID), a sulfur chemiluminescence detector (SCD), a nitrogen chemiluminescence detector (NCD), and a mass spectrometer (MS), the identification and quantification were possible of hydrocarbon, oxygen-, sulfur-, and nitrogen-containing compounds in both naphtha (C5–C11) and diesel fractions (C7–C23) originating from plastic-waste pyrolysis oils. Group-type quantification showed that large amounts of α-olefins (36.39 wt%, 35.08 wt%), iso-olefins (8.77 wt%, 9.06 wt%), and diolefins (4.21 wt%, 4.20 wt%) were present. Furthermore, oxygen-containing compounds (alcohols, ketones, and ethers) could be distinguished from abundant hydrocarbon matrix, by employing Stabilwax as the first column and Rxi-5ms as the second column. Ppm levels of sulfides, thiophenes, and pyridines could also be quantified by the use of selective SCD and NCD detectors.

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Section: Introductionmentioning

confidence: 99%

Detailed Group-Type Characterization of Plastic-Waste Pyrolysis Oils: By Comprehensive Two-Dimensional Gas Chromatography Including Linear, Branched, and Di-Olefins

2021

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“…Also, the use of blending pyrolysis oil and diesel cannot fully provide for engine load in the same that conventional diesel does. The long-term operational effect of the engine working on a blend of 75% pyrolysis oil received from plastics and 25% diesel has been tested (Kalargaris et al, 2017b). After 36 working hours, the operation of the engine failed and a piston cracked due to a deposit on the piston from excessive emissions (Kalargaris et al, 2017b).…”

Section: Oilmentioning

confidence: 99%

“…The long-term operational effect of the engine working on a blend of 75% pyrolysis oil received from plastics and 25% diesel has been tested (Kalargaris et al, 2017b). After 36 working hours, the operation of the engine failed and a piston cracked due to a deposit on the piston from excessive emissions (Kalargaris et al, 2017b). Kalargaris et al (2017a) suggested that blending plastic pyrolysis oil and diesel with a maximum ratio of 60%-70%/40%-30% has the potential to reach 80%-90% engine load under optimum engine performance.…”

Section: Oilmentioning

confidence: 99%

A review on catalytic pyrolysis of municipal plastic waste

Biakhmetov,

Dostiyarov,

et al. 2023

WIREs Energy & Environment

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Plastic pollution is a global issue that severely threatens the environment if not managed properly. Plastic waste is widely treated in unsustainable ways such as landfill and incineration that generally do not contribute to the circular economy or to the principles of the United Nation's sustainable development goals. Catalytic pyrolysis of plastic waste is considered an alternative solution with its potential of recovering fuels and chemicals from the plastic waste that is not recyclable. Here, we described for the first time the main steps required for running an operational pyrolysis plant from a whole system perspective. The recent advancement of plastic pyrolysis technologies is also described to guide the selection of relevant catalysts. The practical applications of products from the plastic pyrolysis are succinctly reviewed. This review will facilitate the development of the capacity to make better decisions upon the design and analysis of plastic pyrolysis processes and systems.This article is categorized under: Sustainable Energy > Bioenergy Climate and Environment > Circular Economy Emerging Technologies > Materials Sustainable Energy > Energy Efficiency

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“…The blended PPO was limited to 50% vol. in the fuel blends, as the higher blend had higher undesirable emissions and unstable engine performance [18,32].…”

Section: The Effect Of Pyrolysis Oil Compared With Diesel Fuelmentioning

confidence: 99%

Experimental Evaluation of Performance and Combustion Characteristics of Blended Plastic Pyrolysis Oil in Enhanced Diesel Engine

2022

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Plastic waste is the largest volume of waste and the most discarded, and it has a direct negative impact on the environment. Therefore, the pyrolysis oil process is an essential and sustainable solution to reduce plastic waste accumulation. However, the plastic pyrolysis fuel performance in diesel engines is reduced due to its lower cetane number. Diesel and pyrolysis oil were blended in ratios of 90:10 (BP10), 80:20 (BP20), 70:30 (BP30), 60:40 (BP40), and 50:50 (BP50) and applied in a single-cylinder diesel engine to investigate the engine performance and exhaust emission. The long ignition delay, thermal efficiency drops, and emission growth were found regarding the higher blended fuel ratios. BP30 was selected to evaluate the performance and combustion characteristics of blended plastic pyrolysis oil and diesel fuel blends by enhancing an unmodified engine using low hydrogen additions (1000 ppm) and advanced timing adjustment. The hydrogen injected into the intake manifold, along with the advanced fuel injection timing (−16.5 CA°BTDC), affected engine performance and emissions (CO, HC, and NO) at 1500 rpm under 25%, 50%, and 75% of the maximum load compared with diesel fuel. The results showed that the hydrogen addition was very positive for both engine performance and emission reduction, as the expanded flammability of the hydrogen promoted a wide range of combustion within the cylinder, whereas the advanced injection timing achieved improved engine performance but produced higher emissions compared to B7 at all engine loads.

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Investigation on the long-term effects of plastic pyrolysis oil usage in a diesel engine

Cited by 13 publications

References 11 publications

Detailed Group-Type Characterization of Plastic-Waste Pyrolysis Oils: By Comprehensive Two-Dimensional Gas Chromatography Including Linear, Branched, and Di-Olefins

Detailed Group-Type Characterization of Plastic-Waste Pyrolysis Oils: By Comprehensive Two-Dimensional Gas Chromatography Including Linear, Branched, and Di-Olefins

A review on catalytic pyrolysis of municipal plastic waste

Experimental Evaluation of Performance and Combustion Characteristics of Blended Plastic Pyrolysis Oil in Enhanced Diesel Engine

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