Fuel production by cracking of polyolefins pyrolysis waxes under fluid catalytic cracking (FCC) operating conditions

Rodríguez, Edgar Charry; Gutiérrez, Alazne; Palos, Roberto; Vela, Francisco J.; Arandes, José M.; Bilbao, Javier

doi:10.1016/j.wasman.2019.05.005

Cited by 61 publications

(57 citation statements)

References 68 publications

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“…FCC catalysts were found to perform with high conversion and high selectivity towards lighter hydrocarbons (C 13 À C 20 ). [27,117] The hydrocarbons were largely olefinic, with high selectivities towards aromatics, isoparaffins, n-paraffins, and naphthenes. [27] As expected, the product outcome changed with varying catalyst acidity, where yields of C 13 À C 20 hydrocarbons and coke fractions increase with increasing acidity.…”

Section: Fcc Catalystsmentioning

confidence: 99%

“…[27,117] The hydrocarbons were largely olefinic, with high selectivities towards aromatics, isoparaffins, n-paraffins, and naphthenes. [27] As expected, the product outcome changed with varying catalyst acidity, where yields of C 13 À C 20 hydrocarbons and coke fractions increase with increasing acidity. [116] The different fractions of products across FCC catalysts of varying acidity was rather similar, however low acidity produced less aromatic and more olefinic naphtha region compounds and high acidity produced the highest C 5 À C 6 olefinicity indexes.…”

Section: Fcc Catalystsmentioning

confidence: 99%

“…[109] Fluidized-bed reactors (FBR) have better overall potential for scale-up than single-stage fixed-bed reactors because they can overcome operational problems such as heat transfer. [13,22,27,40,46,51,153,[250][251][252] FBRs allow for changes in fluidizing flow rate which can affect the product selectivity between light gas and gasoline range components -as well as between olefin and paraffin production -within the gaseous fraction. [80,105] Furthermore, FBRs allow for the recharging of materials and catalysts without halting the process.…”

Section: Reactormentioning

confidence: 99%

“…[54] There are many reviews that cover the pyrolysis, hydrocracking, and gasification of plastic waste with emphasis on the technique (i. e., operating conditions) and specific end product. [5,11,23,[27][28][29][30][31][32][33][34][35][36][37][38][39][41][42][43][44][45][46][47][48][49][50][51][52][54][55][56][57][58][59][60][61][62][63] Here, we present a comprehensive review of the various catalysts that have investigated for PSW conversion, focusing on the effects of catalyst properties on the outcome of the plastic conversion. This review aims to draw a connection between the impact of the textural properties of the catalyst and its performance for plastic conversion with hopes that this can be a useful resource for the development and design of future improved plastic waste conversion catalysts.…”

Section: Introductionmentioning

confidence: 99%

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The Use of Heterogeneous Catalysis in the Chemical Valorization of Plastic Waste

2020

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, respectively. Her graduate research focused on the fundamental understanding of deoxygenation mechanisms for biomass probe molecules on single crystals and thin films. During her graduate career, she received the DOE Science Graduate Student Research (SCGSR) award (2019) and conducted surface science research at Brookhaven National Lab. She now is a postdoctoral researcher at the University of Wisconsin-Madison. Her research focuses on surface spectroscopy and controlled design of heterogeneous catalysts. Melissa C. Cendejas received her B.A. (2016) in Chemistry and English from Williams College. There, she worked on the synthesis of conjugated organic molecules and phosphorusbased surfactants. She then started her PhD in Chemistry at the University of Wisconsin-Madison under the supervision of Prof. Ive Hermans. She studies active site formation on boron-based catalysts. She received the DOE Office of Science Graduate Student Research (SCGSR) award (2020) to perfrom in situ x-ray spectroscopy of catalysts at Stanford Synchrotron Radiation Lightsourse. Prof. Dr. Ive Hermans obtained his Ph.D. from KU Leuven University in Belgium in 2006. In addition to his scientific education, he also holds a postgraduate degree in Business Administration (KU Leuven, 2006). After postdoctoral research on in situ spectroscopy and reaction engineering with Prof. Alfons Baiker, he became assistant professor for heterogeneous catalysis (spring 2008) at ETH Zurich in Switzerland. January 2014, Prof. Hermans moved to the University of Wisconsin-Madison, holding a dual appointment in the Department of Chemistry and the Department of Chemical and Biological Engineering. His group focuses on the mechanistic understanding of catalytic technology using a variety of techniques.

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Section: Fcc Catalystsmentioning

confidence: 99%

Section: Fcc Catalystsmentioning

confidence: 99%

Section: Reactormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Use of Heterogeneous Catalysis in the Chemical Valorization of Plastic Waste

2020

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“…Although the volume of waste HDPE materials can be mitigated by waste minimization [2] and mechanical recycling [3], large-scale solutions are required for the large magnitude of waste HDPE materials [4]. Among the solutions available for a large-scale recycling of waste HDPE, are stand out pyrolysis and gasification [5,6].…”

Section: Introductionmentioning

confidence: 99%

High-Precision Monitoring of Average Molecular Weight of Polyethylene Wax from Waste High-Density Polyethylene

2020

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High-density polyethylene (HDPE) is a major component of polyethylene waste, yet only under 29.9% of waste HDPE is recycled. As an important additive, polyethylene wax (PEW) is increasingly used in many industries such as plastics, dyes, and paints. The preparation of PEW has received considerable interest because recycling and precisely controllable production can bring huge economic benefits. In this study, to recycle waste HDPE, a single screw extruder was innovatively combined with a connecting pipe to prepare PEW from the pyrolysis of waste HDPE. Using a test platform, PEWs were prepared under different pyrolysis temperatures and screw speeds, and corresponding number-average molecular weights (NAMWs) of PEWs were measured. To precisely monitor NAMW of PEW, a program was developed in MATLAB. First, the relationship between NAMW and pyrolysis ratio was obtained, and a measure-point-independence verification was conducted. Then, modified Arrhenius equations and time-dependent pyrolysis temperature were for the first time introduced into the HDPE pyrolysis model. Furthermore, the screw-speed-dependent inverse method was proposed and validated for high-precision monitoring of NAMW of PEW from the pyrolysis of waste HDPE by extrusion. PEW of desired molecular weight was able to be precisely obtained from waste HDPE.

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Recycling of Waste Plastics → Plastics Circularity

2023

Converting Power Into Chemicals and Fuels

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Fuel production by cracking of polyolefins pyrolysis waxes under fluid catalytic cracking (FCC) operating conditions

Cited by 61 publications

References 68 publications

The Use of Heterogeneous Catalysis in the Chemical Valorization of Plastic Waste

The Use of Heterogeneous Catalysis in the Chemical Valorization of Plastic Waste

High-Precision Monitoring of Average Molecular Weight of Polyethylene Wax from Waste High-Density Polyethylene

Recycling of Waste Plastics → Plastics Circularity

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