Yield and Composition of Gases and Oils/Waxes from the Feedstock Recycling of Waste Plastic

Williams, Paul T.

doi:10.1002/0470021543.ch11

Cited by 31 publications

(39 citation statements)

References 33 publications

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“…It seems that pure PE will produce least oil, but fortunately highest calorific value. Another source mentions that oils derived from pyrolysis of 100% PE and pure PS have heating values of 52.3 and 50.4 MJ/kg, respectively [17]. Therefore, addition of other plastic materials to PE wastes can increase the oil yield but decrease the heating value.…”

Section: Resultsmentioning

confidence: 99%

Utilization of Plastics Waste Oil as Partial Substitute for Kerosene in Pressurized Cookstoves

Saptoadi¹,

Pratama²

2015

IJESD

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Section: Resultsmentioning

confidence: 99%

Utilization of Plastics Waste Oil as Partial Substitute for Kerosene in Pressurized Cookstoves

Saptoadi¹,

Pratama²

2015

IJESD

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“…Batool et al (2016) also reported the maximum production of gas from catalytic pyrolysis of PE, with highly acidic ZSM-5 catalyst. According to Lee (2012) and Williams (2006), PE has a long chain carbon structure, and its degradation occurs randomly into smaller chain molecules via random chain scission, which may promote gas production. During the pyrolysis of PE, which holds the C-H and C-C bonds only, initially, macromolecule backbone breaking occurred and produced stable free-radicals.…”

Section: Effect Of Feedstock and Catalysts On Pyrolysis Products Yieldmentioning

confidence: 99%

Catalytic Pyrolysis of Plastic Waste: Moving Toward Pyrolysis Based Biorefineries

et al. 2019

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Pyrolysis based biorefineries have great potential to convert waste such as plastic and biomass waste into energy and other valuable products, to achieve maximum economic and environmental benefits. In this study, the catalytic pyrolysis of different types of plastics wastes (PS, PE, PP, and PET) as single or mixed in different ratios, in the presence of modified natural zeolite (NZ) catalysts, in a small pilot scale pyrolysis reactor was carried out. The NZ was modified by thermal activation (TA-NZ) at 550 • C and acid activation (AA-NZ) with HNO 3 , to enhance its catalytic properties. The catalytic pyrolysis of PS produced a higher liquid oil (70 and 60%) than PP (40 and 54%) and PE (40 and 42%), using TA-NZ and AA-NZ catalysts, respectively. The gas chromatography-mass spectrometry (GC-MS) analysis of oil showed a mixture of aromatics, aliphatic and other hydrocarbon compounds. The TA-NZ and AA-NZ catalysts showed a different effect on the wt% of catalytic pyrolysis products and liquid oil chemical compositions, with AA-NZ showing higher catalytic activity than TA-NZ. FT-IR results showed clear peaks of aromatic compounds in all liquid oil samples with some peaks of alkanes that further confirmed the GC-MS results. The liquid oil has a high heating value (HHV) range of 41.7-44.2 MJ/kg, close to conventional diesel. Therefore, it has the potential to be used as an alternative source of energy and as transportation fuel after refining/blending with conventional fuels.

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“…Sometimes the resulting vapors are condensed to produce an oil/wax hydrocarbon product with a high degree of purity and can be refined at the petroleum refinery to produce a range of petrochemical products, including plastic. 3 In thermal degradation of polymers, two key process parameters play a role that define the product yield and composition, which is the heating rate and temperature of pyrolysis. As seen from Figure 1, the pyrolysis product varies from gas or liquid or char or mixtures depending upon the type of pyrolysis mode.…”

Section: Introductionmentioning

confidence: 99%

Temperature Effects on the Yield of Gaseous Olefins from Waste Polyethylene via Flash Pyrolysis

Kannan¹,

Shoaibi²,

Srinivasakannan³

2014

Energy Fuels

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Thermal pyrolysis has earned a significant reputation in the recovery of valuable chemicals, especially petrochemical-based fuels from various materials, including biomass and plastics. Of many available technologies, flash pyrolysis was preferred in the present work, owing to its minimal heat-and mass-transfer limitations and better control on process conditions. The focus of the work is toward efficient conversion of waste plastics into gaseous products, consisting primarily of alkanes, alkenes, and aromatics. Lab-scale experiments were performed using a flash microreactor to determine a favorable reaction temperature that would result in the maximum yield of olefins, primarily the monomer ethylene.

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Yield and Composition of Gases and Oils/Waxes from the Feedstock Recycling of Waste Plastic

Cited by 31 publications

References 33 publications

Utilization of Plastics Waste Oil as Partial Substitute for Kerosene in Pressurized Cookstoves

Utilization of Plastics Waste Oil as Partial Substitute for Kerosene in Pressurized Cookstoves

Catalytic Pyrolysis of Plastic Waste: Moving Toward Pyrolysis Based Biorefineries

Temperature Effects on the Yield of Gaseous Olefins from Waste Polyethylene via Flash Pyrolysis

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