Influence of FCC catalyst steaming on HDPE pyrolysis product distribution

Olazar, Martı́n; López, Gartzen; Amutio, Maider; Elordi, Gorka; Aguado, Roberto; Bilbao, Javier

doi:10.1016/j.jaap.2008.10.016

Cited by 113 publications

(57 citation statements)

References 35 publications

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“…These were found to produce gasoline of high quality and LPG with little dry gas, and small amount of coke. In Some cases, the obtained gasoline [27] was in agreement with EU requirements containing no Sulphur, negligible benzene, and a RON index of 96.5. Furthermore, microwave assisted pyrolysis furnaces have been used as an efficient route to handle plastic waste.…”

Section: Pyrolysis Reactorssupporting

confidence: 73%

Thermal Pyrolysis of Hospital Plastic Waste

Mahmud¹

2018

IJRASET

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Plastic plays an important role in our daily lives due to its versatility, light weight and low production cost. The amount of plastic waste is growing every year and with that comes an environmental concern regarding this problem. Pyrolysis as a tertiary recycling process is presented as a solution. In this work, the pyrolysis of hospital plastic waste products was investigated using thermal non catalytic cracking techniques. The experimental work was carried out using a pyrolysis reactor operating under an inert atmosphere at 450°C. Results indicated that the waste plastic is able to give the yield of liquid product by using a pyrolysis reactor. The obtained product was fuel liked liquid heavy oil which was viscous and had a yellow color. The fuel properties of the diesel-range distillate (diesel fraction) were comparable to other conventional fuel and found its calorific value was 31 MJ/kg.

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Section: Pyrolysis Reactorssupporting

confidence: 73%

Thermal Pyrolysis of Hospital Plastic Waste

Mahmud¹

2018

IJRASET

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“…Zeolite catalysts have been used to reduce the amount of bromine in the product pyrolysis oil [6,7]. Zeolite catalysts have also been used in the pyrolysis of other types of waste plastics, for example, municipal solid waste polyalkene plastics such as high density polyethylene and polypropylene to improve the quality of the product oils [8][9][10][11][12][13][14]. The use of zeolite catalysts allows a narrower range of hydrocarbons to be produced [13].…”

Section: Introductionmentioning

confidence: 99%

“…Zeolite catalysts have also been used in the pyrolysis of other types of waste plastics, for example, municipal solid waste polyalkene plastics such as high density polyethylene and polypropylene to improve the quality of the product oils [8][9][10][11][12][13][14]. The use of zeolite catalysts allows a narrower range of hydrocarbons to be produced [13]. For example, Garcia et al [8] used a fixed bed reactor to investigate the catalytic pyrolysis of high density polyethylene with a hybrid zeolite-MCM-41 mesoporous catalysts and reported a high product yield of light hydrocarbons, mainly C 2 -C 5 alkenes.…”

Section: Introductionmentioning

confidence: 99%

Catalytic pyrolysis of waste plastic from electrical and electronic equipment

Muhammad

Onwudili

Williams

2015

Journal of Analytical and Applied Pyrolysis

104

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Plastic waste collected from waste electrical and electronic equipment (WEEE) was pyrolysed in the presence of zeolite catalysts to produce a gasoline range aromatic oil. The plastic was from equipment containing cathode ray tubes (CRTs) and also plastic waste from refrigeration equipment. In addition, for comparison the main plastics contained in the WEEE, in the form of high impact polystyrene (HIPS) and acrylonitrile-butadiene-styrene (ABS) were also pyrolysed in the presence of the zeolite catalysts. Two zeolite catalysts; Y zeolite and ZSM-5 were used. Catalytic pyrolysis took place in a two stage fixed bed, batch reactor with the plastic pyrolysed in the first stage and the evolved pyrolysis gases catalysed in the second stage reactor. The quantity of oil produced from uncatalysed pyrolysis of plastics from CRTs and refridgerators was more than 80 wt%. The gases consisted of hydrogen, methane and C 2 -C 4 hydrocarbons. When the zeolite catalysts were introduced there was a decrease of between 5-10 wt% in oil yield and a corresponding increase in gas yield.The composition of the oils derived from the uncatalysed pyrolysis of WEEE plastics were mainly aromatic with high concentrations of styrene, derived from the HIPS and ABS present in the plastic waste. Addition of the zeolite ZSM-5 and Y zeolite to the pyrolysis process resulted in significant concentrations of benzene, toluene and ethylbenzene in the product oil but reduced concentrations of styrene. The oils from both thermal and catalysed pyrolysis also contained significant concentrations of polycyclic aromatic hydrocarbons for example, naphthalene, phenanthrene and pyrene.

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“…Olazar et al [36] obtained 8 wt% of gaseous fraction, 22 wt% of C 5 -C 9 fraction, and 69 wt% of C 10+ fraction (diesel fraction) at 475°C, using a commercial FCC catalyst based on a HY zeolite active phase (30 g), after a severe steaming was applied to the catalysts. These results are a consequences of the decrease in acidity that the catalyst undergoes in the aforementioned treatment.…”

Section: Catalytic Pyrolysismentioning

confidence: 99%

Pyrolysis of Polyolefins in a Conical Spouted Bed Reactor: A Way to Obtain Valuable Products

Arabiourrutia¹,

Elordi²,

Olazar³

et al. 2017

Pyrolysis

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The amount of waste plastic increases every single year, which causes a critical environmental issue. Polyolefins (mainly high-and low-density polyethylene and polypropylene) are the most common types of plastics, accounting for 60 wt% of the plastic waste. Pyrolysis, the thermal degradation in an inert atmosphere, is considered to be one of the most appealing technologies for the recycling of plastic materials. The conical spouted bed reactor is suitable for the pyrolysis of plastic waste due to its ability to avoid agglomeration problems that may be caused by the melted plastic. The pyrolysis process may be carried out at different temperatures and with or without the presence of catalysts in the reaction environment in order to streamline product distribution. The resulting products are hydrocarbons: non-condensable gases (C 1 -C 4 ), gasoline fraction, diesel fraction, and waxes. These fractions might be used directly as feed streams for refinery units or as pools to be mixed with other streams from refineries.

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Influence of FCC catalyst steaming on HDPE pyrolysis product distribution

Cited by 113 publications

References 35 publications

Thermal Pyrolysis of Hospital Plastic Waste

Thermal Pyrolysis of Hospital Plastic Waste

Catalytic pyrolysis of waste plastic from electrical and electronic equipment

Pyrolysis of Polyolefins in a Conical Spouted Bed Reactor: A Way to Obtain Valuable Products

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