On the pyrolysis kinetics of scrap automotive tires

Chen, J.H.; Chen, K.S.; Tong, Lee‐Ing

doi:10.1016/s0304-3894(01)00180-7

Cited by 77 publications

(39 citation statements)

References 19 publications

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“…15,16 In addition, two methods might be used to reduce any error in temperature measurement because of temperature gradient: (1) bring the thermocouple in contact with the sample or (2) reduce the sample size. 9 As such, the effects of heat transfer and temperature gradient in the TDF sample were eliminated in the TGA experiments. The heater is programmed to give the sample heating rates of 1, 5, 10, 20, 30, 50, and 100°C/min to the final pyrolytic temperatures of 400, 450, 500, 600, 800, and 1000°C.…”

Section: Reactor Design and Thermogravimetricmentioning

confidence: 99%

“…These studies have concluded that the decomposition rate at temperatures Ͼ350°C was affected by the heating rates but was less dependant on sample sizes. Friedman 8 and Chen et al 9 calculated E, A, and n of the pyrolysis of rubber from the data collected at various IMPLICATIONS Scrap tires are becoming an increasing waste management problem because of the tremendous volume of scrap tires generated every year, the decreasing availability of landfill space, and the possibility of disease and uncontrolled fires, which may result from their disposal. They possess tremendous potential as a fuel or fuel supplemental because of their high energy content.…”

Section: Introductionmentioning

confidence: 99%

“…Chen et al 9 applied the least square and linear regression techniques in conjunction with the Arrhenius expression to determine the kinetic parameters. Oh et al 10 and Leung et al 13 applied the multistep Arrhenius's Law to differentiate the decomposition behavior of rubber compounding in the tires.…”

Section: Introductionmentioning

confidence: 99%

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Pyrolysis Behavior of Tire-Derived Fuels at Different Temperatures and Heating Rates

Unapumnuk

Keener

et al. 2006

Journal of the Air & Waste Management Association

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Pyrolytic product distribution rates and pyrolysis behavior of tire-derived fuels (TDF) were investigated using thermogravimetric analyzer (TGA) techniques. A TGA was designed and built to investigate the behavior and products of pyrolysis of typical TDF specimens. The fundamental knowledge of TGA analysis and principal fuel analysis are applied in this study. Thermogravimetry of the degradation temperature of the TDF confirms the overall decomposition rate of the volatile products during the depolymerization reaction. The principal fuel analysis (proximate and ultimate analysis) of the pyrolytic char products show the correlation of volatilization into the gas and liquid phases and the existence of fixed carbon and other compounds that remain as a solid char. The kinetic parameters were calculated using least square with minimizing sum of error square technique. The results show that the average kinetic parameters of TDF are the activation energy, E ϭ 1322 Ϯ 244 kJ/mol, a pre-exponential constant of A ϭ 2.06 Ϯ 3.47 ϫ 10 10 min Ϫ1 , and a reaction order n ϭ 1.62 Ϯ 0.31. The model-predicted rate equations agree with the experimental data. The overall TDF weight conversion represents the carbon weight conversion in the sample.

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Section: Reactor Design and Thermogravimetricmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Pyrolysis Behavior of Tire-Derived Fuels at Different Temperatures and Heating Rates

Unapumnuk

Keener

et al. 2006

Journal of the Air & Waste Management Association

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“…It can also be added to refinery product cuts or upgraded using a catalyst [9]. Various studies were conducted in the past on ELTs utilising pyrolysis and where deemed successful [10][11][12][13][14][15].…”

Section: Origins and Chemical Recycling Of Eltsmentioning

confidence: 99%

Variation in Gas Chromatography (GC) analysis in setting up laboratory protocols for waste to energy novel fixed bed reactor setups

Al-Dhafeeri¹,

Al–Salem²,

Al-Wadi³

et al. 2017

Int. J. EQ

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Gas Chromatography coupled with Mass Spectrometry (GC/MS) has been applied in various analytical chemistry works. However, to fine tune a system that can serve the purposes of pyrolysis oil identification has proven to be a laborious effort, especially when considering the fact that no standard protocol exists for such analysis. In addition, obtained products were yielded from a newly commissioned unit with a unique and novel design. In this study, a US patent office claimed reactor [SULTAN-1, Pyrolysis Reactor System for the Conversion and Analysis of Organic Solid Waste, Patent application number: 15,487,351] that degrades polyolefinc virgin and waste materials to obtain petroleum refinery and petrochemical feedstock, has been commissioned. The reactor produces three distinct physical states of matter products accumulated as testing specimens, i.e. solids, gaseous and oil. The samples analysed in this work were of the gas and oil produced by pyrolysis of end of life tyre (ELTs) shavings that required to have a special recipe to work with in the laboratory. Various MS cords were utilised and experimental setups to fine tune the process, and special emphasis was given on the gas samples variation in this communication. To reach the desired analysis results with high repeatability, a plethora of experiences of lab personnel and laboratory-based experimental work was accumulated. Laboratory protocols were also setup for this work. These will be detailed along the process execution which yielded a standard laboratory best practice analytical method as part of the State of Kuwait newly initiated Government Initiative project.

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“…A lot of effort has been taken to better understand the complex reaction mechanism for ELTs pyrolysis (Al-Salem et al, 2009;Chen et al, 2001;Islam et al, 2009). However, most of the papers have been devoted to simplified kinetic models (Quek and Balasubramanian, 2012).…”

Section: Introductionmentioning

confidence: 99%

Pyrolysis of waste tyres – The effect of reaction kinetics on the results of thermogravimetric analysis

Cherbański

Molga

Wróblewski³

2017

Chemical and Process Engineering

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This paper presents a systematic thermogravimetric (TG) study on the kinetics of end-of-life tyre (ELT) pyrolysis. In the experimental part of this work, TG results are compared for tyre samples of different mass and size. This shows that the conduction resistance in the milligram scale (up to ~100 mg) tyre sample can be neglected. A comparison of experimental results demonstrates that the characteristic maxima on the DTG curve (the first derivative of TG signal) shift towards higher temperatures for higher heating rates. This phenomenon is explained to have kinetic origin and it is not caused by the internal heat transfer resistance. In the modelling part of this work, the kinetic parameters of the Three-Component Simulation Model (TCSM) are calculated and compared to the literature values. Testing of the kinetic model is carried out using experiments with a varying heating rate. This shows the limitation of the simplified kinetic approach and the appropriate selection method of the kinetic parameters.

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On the pyrolysis kinetics of scrap automotive tires

Cited by 77 publications

References 19 publications

Pyrolysis Behavior of Tire-Derived Fuels at Different Temperatures and Heating Rates

Pyrolysis Behavior of Tire-Derived Fuels at Different Temperatures and Heating Rates

Variation in Gas Chromatography (GC) analysis in setting up laboratory protocols for waste to energy novel fixed bed reactor setups

Pyrolysis of waste tyres – The effect of reaction kinetics on the results of thermogravimetric analysis

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