Thermal and catalytic degradation of waste high-density polyethylene (HDPE) using spent FCC catalyst

Lee, Kyong-Hwan; Jeon, Sang-Gu; Kim, Kwang‐Ho; Noh, Nam-Sun; Shin, Dae-Hyun; Seo, Young‐Hwa; Yee, Jurng-Jae; Kim, Geug-Tae

doi:10.1007/bf02706909

Cited by 39 publications

(19 citation statements)

References 18 publications

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“…A number of studies have been reported in which a range of catalysts and reaction conditions have been employed to convert waste plastics into the hydrocarbon liquid using pyrolysis during the past four decades. The most commonly used catalysts in the catalytic degradation of high-density polyethylene are solid acids (zeolite, silica-alumina) [7][8][9][10][11][12][13] and spent FCC [14,15].…”

Section: Journal Of Petroleum Engineeringmentioning

confidence: 99%

Thermolysis of High-Density Polyethylene to Petroleum Products

Kumar

Singh

2013

Journal of Petroleum Engineering

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Thermal degradation of plastic polymers is becoming an increasingly important method for the conversion of plastic materials into valuable chemicals and oil products. In this work, virgin high-density polyethylene (HDPE) was chosen as a material for pyrolysis. A simple pyrolysis reactor system has been used to pyrolyse virgin HDPE with an objective to optimize the liquid product yield at a temperature range of 400°C to 550°C. The chemical analysis of the HDPE pyrolytic oil showed the presence of functional groups such as alkanes, alkenes, alcohols, ethers, carboxylic acids, esters, and phenyl ring substitution bands. The composition of the pyrolytic oil was analyzed using GC-MS, and it was found that the main constituents were n-Octadecane, n-Heptadecane, 1-Pentadecene, Octadecane, Pentadecane, and 1-Nonadecene. The physical properties of the obtained pyrolytic oil were close to those of mixture of petroleum products.

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Section: Journal Of Petroleum Engineeringmentioning

confidence: 99%

Thermolysis of High-Density Polyethylene to Petroleum Products

Kumar

Singh

2013

Journal of Petroleum Engineering

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“…As previously argued, activated carbon catalysis proceeds via a different mechanism to current FCC catalysts, and in any case the profile of the products produced using activated carbon in this work differ considerably to those produced using standard FCC catalysts, with a much higher aromatic content of up to 85% (compared with 10-26% typical in FCC plants [223,303]). Accordingly, a novel process using activated carbon would likely focus on the production of aromatics as an end point.…”

Section: Future Reactivation Workmentioning

confidence: 67%

Microwave-assisted pyrolysis of HDPE using an activated carbon bed

et al. 2012

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Plastics play an enormous role in modern manufacturing, but the extraction and refining of raw materials, followed by the synthesis of plastics themselves, represents an enormous energy investment into a product that is all too often simply "thrown away" into a landfill after a single use. Microwave-assisted pyrolysis is a recycling technique that allows the recovery of chemical value from plastic waste by breaking down polymers into useful smaller hydrocarbons using microwave heat in the absence of oxygen. This dissertation examines the use of a catalytic activated carbon bed in this procedure, using high density polyethylene (HDPE) as a model plastic. Initial tests with the batch input of HDPE produced a condensed pyrolysis oil comprising 35.5-45.3% aromatics, with the remainder primarily short-chain aliphatics. This oil was approximately three times lighter than that produced in the absence of catalyst, with a narrower range of molecular masses that matched those of the liquid transport fuels petrol and diesel (C 5-C 21). The non-condensable gases that resulted were short-chain aliphatics that could be used as feedstock for the creation of new chemicals (such as virgin HDPE), or fuels such as natural gas and LPG. The development of apparatus capable of adding sample in a continuous fashion enabled the processing of larger quantities of HDPE, and resulted in condensed products with a significantly higher aromatic content (>80% at 450°C), and which I owe a debt of thanks to many people for the support and kindness they have shown me throughout my time in Cambridge. I would like to thank my supervisor, Professor Howard Chase, for his generous provision of tutelage, expertise, and support throughout the production of this work. A further thank you to my colleagues and the department support staff for their extremely skilled time and advice. I would also like to acknowledge the generous financial support that I have received from the Cambridge Commonwealth Trust, The Higher Education Funding Council for

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“…The degradation of various plastics using spent catalyst showed the oil yields of around 80%, as well as the oil production of high quality within the range of gasoline components. Compared with the thermal degradation study of waste HDPE, catalytic degradation using spent FCC catalyst can shorten the reaction time in a reactor [15].…”

Section: Resultsmentioning

confidence: 99%

Composition of aromatic products in the catalytic degradation of the mixture of waste polystyrene and high-density polyethylene using spent FCC catalyst

Lee

2008

Polymer Degradation and Stability

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Thermal and catalytic degradation of waste high-density polyethylene (HDPE) using spent FCC catalyst

Cited by 39 publications

References 18 publications

Thermolysis of High-Density Polyethylene to Petroleum Products

Thermolysis of High-Density Polyethylene to Petroleum Products

Microwave-assisted pyrolysis of HDPE using an activated carbon bed

Composition of aromatic products in the catalytic degradation of the mixture of waste polystyrene and high-density polyethylene using spent FCC catalyst

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