Shredding Late Model Chrysler Vehicles, ASR Sample Collection and Characterization of ASR

Liu, Shawn X.; Winslow, Gerald R.; Yester, Susan; Gromek, Gregory P.; Crouch, Alan; Sendijarević, Vahid

doi:10.4271/980480

Cited by 3 publications

(3 citation statements)

References 7 publications

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“…Shedder residue contains %25% light SR. The compositions of SR streams are relatively consistent, and the composition of the specific light SR depends mostly on the type of shredding process ('dry,' 'wet,' 'damp'), the particle size of the shredded material, and the type of the downstream separation process (flotation, rotating trommel, or a multiple level vibratory screen) [4,5]. There was many relatively simple processes that may be utilized to upgrade urethane content in these streams and eliminate contaminants such as heavy metals.…”

Section: Introductionmentioning

confidence: 99%

Chemical Recycling of Mixed Polyurethane Foam Stream Recovered from Shredder Residue into Polyurethane Polyols

Sendijarević

2007

Journal of Cellular Plastics

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Recently, Troy Polymers, Inc. developed a chemical process for recycling of polyurethane foam scrap from shredder residue into polyols for polyurethanes (Sendijarevic, V. (2004). Process for Chemical Recycling of Polyurethane-containing Scrap, U.S. Patent No. 6,750,260 (assigned to Troy Polymers, Inc. and Polyventure, Inc.), June 15). This process is ideally suited for recycling polyurethane (PU) foam scrap from shredder residue (SR), which is a mixture of different types of PU foams based on different types of polyether and polyester polyols and different types of isocyanates, TDI and MDI. The PU foams separated from SR are contaminated with other types of cellular (foam) and fluff non-urethane materials. In stage one of this process, the PU foam is subjected to glycolysis, followed by filtration of the liquid glycolyzed product. In stage two, the glycolyzed products are used as initiators in reaction with propylene oxide to prepare novel PU polyols. A number of successful laboratory glycolyses have been carried out utilizing two different types of PU foams recovered from SR: (1) the best case scenario – handpicked PU foams from SR with > 80% conversion into liquid initiator and (2) the worst case scenario – mixed PU materials separated by an automated separation process from ELV shredder residue with 50% conversion into a liquid initiator. Both TDI-and PMDI-based flexible foams are prepared from the novel recycled polyols prepared by propoxylation of the glycolyzed products (initiators) obtained from the mixed PU materials. Preliminary economic analysis indicates that the commercial production of the polyols from the foam scrap can be cost effective.

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Section: Introductionmentioning

confidence: 99%

Chemical Recycling of Mixed Polyurethane Foam Stream Recovered from Shredder Residue into Polyurethane Polyols

Sendijarević

2007

Journal of Cellular Plastics

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“…This material is a mixture of plastics, rubber, foam, textiles, glass and dirt, the waste produced by shredding operations during the recycling of automobiles [10,11]. In North America alone, over 3 million tonnes of ASR is generated each year [12] with the vast majority destined for landfill disposal.…”

Section: Introductionmentioning

confidence: 99%

Pyrolysis of auto shredder residue: experiments with a laboratory screw kiln reactor

Day

Shen

Cooney

1999

Journal of Analytical and Applied Pyrolysis

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The pyrolysis of automobile shredder residue (ASR) has been studied using a laboratory scale screw kiln reactor with a feed rate of about 100 g h − 1. Pyrolysis at temperatures between 500 and 750°C resulted in the production of gas, liquid and solid fractions with hydrocarbon yields of the organic fraction present in the feed increasing from 60 -85% with increasing pyrolysis temperature. While the hydrocarbon pyrolysis product yield increased with pyrolysis temperature, the yield of the oil fraction was higher at the lower pyrolysis temperatures. The composition of the pyrolysis oil also changed with pyrolysis temperature, containing larger quantities of aliphatic compounds at the lower temperatures than at higher temperatures where aromatics were the major compounds. Many of the liquid pyrolysis products have been identified including polycyclic aromatic hydrocarbons as well as organo nitrogen, sulphur and chlorine compounds. The data obtained have been compared with that obtained from a process using short pyrolysis residence times.

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“…1). According to different procedures complete or only partial disassembling could be performed [10]. A large number of disassembled metal parts, sometimes after renovation, could be sold as spare parts used to repair another car.…”

Section: Introductionmentioning

confidence: 99%

Recycling of automotive catalytic converters with application of magneto-hydrodynamic pump

Wójcik¹,

Pawłowska²,

Stachowicz³

2016

ZN PRz Mechanika

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The automotive catalytic converter is a part of exhaust system in vehicles, which reduces the amount of harmful substances in exhaust fumes. The need of using automotive catalytic converters results from rigorous standards for exhaust fumes emissions, called EURO standards. In Poland, there is not any installation designed in order to recycle worn out automotive catalytic converters. Catalytic converters are purchased by individual entrepreneurs and exported abroad. This article presents a solution of recycling of catalytic converters which can recover precious metals contained in catalytic converters. This article also characterizes automotive catalytic converters and reviews the standards of exhaust fumes emission.

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Shredding Late Model Chrysler Vehicles, ASR Sample Collection and Characterization of ASR

Cited by 3 publications

References 7 publications

Chemical Recycling of Mixed Polyurethane Foam Stream Recovered from Shredder Residue into Polyurethane Polyols

Chemical Recycling of Mixed Polyurethane Foam Stream Recovered from Shredder Residue into Polyurethane Polyols

Pyrolysis of auto shredder residue: experiments with a laboratory screw kiln reactor

Recycling of automotive catalytic converters with application of magneto-hydrodynamic pump

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