Pyrolysis of polystyrene waste in a fluidized-bed reactor to obtain styrene monomer and gasoline fraction

Liu, Yirong; Qian, Jialin; Wang, Jianqiu

doi:10.1016/s0378-3820(99)00066-1

Cited by 188 publications

(134 citation statements)

References 5 publications

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“…Table 11.3 shows the yield of gas, oil/wax and char from the fixed bed pyrolysis of the main polyalkene plastics, polyethylene and polypropylene, found in municipal solid waste [7][8][9][10][11][12][13][14][15]. Table 11.4 shows the gas, oil/wax and char from the pyrolysis of other plastics [7][8][9][14][15][16][17]. All of the plastics produced an oil/wax and gas and in some cases a char.…”

Section: Introductionmentioning

confidence: 97%

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

Williams

2006

Feedstock Recycling and Pyrolysis of Waste Plastics

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Section: Introductionmentioning

confidence: 97%

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

Williams

2006

Feedstock Recycling and Pyrolysis of Waste Plastics

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“…Pyrolysis is the thermal degradation of the plastic polymer to produce a char, oil and gas, all of which have potential as useful end products. There have been many studies on the pyrolysis of pure plastic materials [7,8] and mixtures of pure plastic which simulate those representative of real world samples such as municipal solid waste plastics [4,[9][10][11]. However, there are few studies detailing the product characteristics from the pyrolysis process of real world waste plastics [12,13].…”

Section: Introductionmentioning

confidence: 99%

Analysis of products from the pyrolysis of plastics recovered from the commercial scale recycling of waste electrical and electronic equipment

Hall

Williams

2007

Journal of Analytical and Applied Pyrolysis

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Three plastic fractions from a commercial waste electrical and electronic equipment (WEEE) processing plant were collected and investigated for the possibility of recycling them by batch pyrolysis. The first plastic was from equipment containing cathode ray tubes (CRTs), the second plastic was from refrigeration equipment, and the third plastic was from mixed WEEE. Initially, the decomposition of each of the plastics was investigated using a TGA linked to a FT-ir spectrometer which showed that the CRT plastic decomposed to form aliphatic and aromatic compounds, the refrigerator plastic decomposed to form aldehydes, CO 2 , aromatic, and aliphatic compounds, and the mixed WEEE plastic decomposed to form aromatic and aliphatic compounds, CO 2 , and CO. Each plastic mixture was also pyrolysed in a batch reactor to determine the halogen and metal content of the pyrolysis products, additionally, characterisation of the pyrolysis oils was carried out by GC-MS and the pyrolysis gases by GC-FID and GC-TCD. It was found that the halogen content of the oils was relatively low but the halogen and metal content of the chars was high. The pyrolysis oils were found to contain valuable chemical products and the pyrolysis gases were mainly halogen free, making them suitable as a fuel.

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“…The thermal degradation of HDPE consists of free radical formation and hydrogen abstraction steps whereas the thermal degradation of PS is a radical chain process including initiation, transfer and termination steps (Kiran, Ekinci, & Snape, 2000). The main composition of pyrolysis gas of HDPE flowing out from the pyrolyzer was wax while the major pyrolysis products of PS were stable aromatic components as liquid phase such as styrene, which have stable benzene ring structure and difficult to be converted into small molecular gaseous products (Pinto, Costa, Gulyurtlu, & Cabrita, 1999;Liu & Qian, 2000). However, these aromatic hydrocarbons were readily converted into coke existing on the internal and external surface of catalyst to make the catalyst deactivate.…”

Section: Effect Of Whsvmentioning

confidence: 99%

Co-Production of Liquid and Gaseous Fuels from Polyethylene and Polystyrene in a Continuous Sequential Pyrolysis and Catalytic Reforming System

Syamsiro¹,

H²,

Komoto³

et al. 2013

EER

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This paper deals with the potential of using sequential pyrolysis and catalytic reforming process in a continuous system for the conversion of polyethylene and polystyrene into liquid and gaseous fuels using the HY-zeolite catalyst for the catalytic reforming of pyrolysis gas generated in a pyrolyzer. The effect of reforming temperature and the weight hourly space velocity on the product yields, liquid and gaseous compositions have been investigated for each feedstock. The experiments were carried out at the pyrolyzer temperature of 450 °C, the reforming temperature of 400, 450, and 500 °C and the weight hourly space velocity of 2, 3, and 4 g-sample g-catalyst -1 h -1 . The results show that increasing the reforming temperature and decreasing the weight hourly space velocity have resulted in an increase of gaseous and solid products while the liquid product decreased. The maximum oil production for HDPE (70.0wt%) and PS (88.1wt%) were obtained at the pyrolysis temperature of 450 °C, the reforming temperature of 450 °C and the weight hourly space velocity of 4. The C2, C3 and C4+ gases (>75 mol %) were the main components of the gaseous and liquid products for HDPE. In case of PS, the C2 and C3 gases (>65 mol %) were the main components of the gaseous product. The high quality of gaseous products can be used as a fuel either for driving gas engines or for dual-fuel diesel engines.

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Pyrolysis of polystyrene waste in a fluidized-bed reactor to obtain styrene monomer and gasoline fraction

Cited by 188 publications

References 5 publications

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

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

Analysis of products from the pyrolysis of plastics recovered from the commercial scale recycling of waste electrical and electronic equipment

Co-Production of Liquid and Gaseous Fuels from Polyethylene and Polystyrene in a Continuous Sequential Pyrolysis and Catalytic Reforming System

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