Optimization of fuel production from waste vehicle tires by pyrolysis and resembling to diesel fuel by various desulfurization methods

Aydın, Hüseyin; İlkılıç, Cumali

doi:10.1016/j.fuel.2012.06.067

Cited by 174 publications

(124 citation statements)

References 21 publications

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“…Nevertheless, partial desulfurization was obtained at relatively high temperatures, without the aid of a catalyst and at atmospheric pressure, by contrast with the desulfurization of petroleum-derived feedstocks, which is performed under high hydrogen pressures in the range of 30-130 atm on the surface of a catalyst, such as cobalt-molybdenum or nickel molibdenum supported on alumina, at temperatures between 300 and 400 • C [27]. Other desulfurization mechanisms have been studied for the pyrolysis of tyre rubber based on the addition of additive mixtures such as sodium carbonate, zeolite, and lime [28] and sodium hydroxide, calcium hydroxide and lime [9] with considerable reduction of the sulphur content between 34% and 83%, with minor effects on the yield of the different fractions. In terms of the heat of combustion, the statistical analysis showed that this parameter is affected by the experimental temperature and hydrogen flow; however, no trend or correlation was found between the experimental variables and the heat of combustion.…”

Section: Effect Of Pyrolysis Condition On the Pyrolytic Liquid Fuelmentioning

confidence: 99%

Decomposition of Used Tyre Rubber by Pyrolysis: Enhancement of the Physical Properties of the Liquid Fraction Using a Hydrogen Stream

2018

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Abstract:The disposal of discarded tyres represents an environmental challenge for solid waste management entities. The need to reduce solid waste in urban areas along with the depletion of natural resources have made it necessary to reincorporate used materials into productive processes, giving value to what is considered waste, and minimizing the requirement of natural resources. In this study, pyrolysis was selected to thermally decompose used ground waste vulcanized rubber from automobile tyres. This rubber was exposed to the pyrolytic process in an indirectly heated batch reactor at three different temperatures. Three fractions (i.e., gas, liquid and solid) were obtained during the process. The effect of a hydrogen stream on the properties of the liquid fraction was analysed and characterized following the American Society for Testing and Materials procedures (ASTM) for the pyrolysis of liquid fuels. A multifactorial statistical analysis was used to evaluate the experimental data and thermographs of the process were recorded. Differences in thermographs suggest a different degradation pathway for the rubber exposed to 600 • C compared to the rubber exposed to lower temperatures. Temperatures in the range of 450 to 500 • C favored the production of carbon black regardless of the use of a hydrogen stream. In contrast, high temperatures favored the production of liquid and gas fractions. The highest production of liquid fraction was obtained at 550 • C, where 37% of the rubber was turned into liquid. Results also showed that a constant flow of hydrogen improves the appearance of the pyrolysis liquid. Furthermore, the hydrogen atmosphere reduces the sulphur content, water and sediments; and increases the values for the heat of combustion and the liquid fraction.

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Section: Effect Of Pyrolysis Condition On the Pyrolytic Liquid Fuelmentioning

confidence: 99%

Decomposition of Used Tyre Rubber by Pyrolysis: Enhancement of the Physical Properties of the Liquid Fraction Using a Hydrogen Stream

2018

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“…Researchers have attempted to advance this technology to make it technically and economically feasible and applied to produce biofuel from various feedstocks. Tyre pyrolysis has been the subject of many studies; a major reason is it is environmentally friendly and its lower emission except for a few equipment leakage and minor fugitive sources [75][76][77][78][79][80][81]. Biomass pyrolysis is a very complex process and performed in two stages.…”

Section: Pyrolysismentioning

confidence: 99%

“…During pyrolysis of small pieces of car tyres (2-3 cm) in the temperature range 300-700 • C, no changes were observed in oil product above 500 • C [92]. Removing the fabric and steel of the tyres and performing pyrolysis tests in a fixed bed reactor, Aydın and IIkilic [81] found that the maximum oil yield obtained 40.26 wt % at 500 • C. At higher temperatures, they observed only a small fall in the oil yield (39.74 wt % at 700 • C). On the other hand, the maximum gas yield of 18.68 wt % obtained by temperature rising at 700 • C. They also examined the effect of nitrogen flow rate and did not observe considerable changes in the product yield.…”

Section: Fixed-bed Reactor Pyrolysismentioning

confidence: 99%

Scrap Tyre Management Pathways and Their Use as a Fuel—A Review

2016

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Abstract:This article provides a review of different methods for managing waste tyres. Around 1.5 billion scrap tyres make their way into the environmental cycle each year, so there is an extreme demand to manage and mitigate the environmental impact which occurs from landfilling and burning. Numerous approaches are targeted to recycle and reuse the tyre rubber in various applications. Among them, one of the most important methods for sustainable environmental stewardship is converting tyre rubber components into bio-oil. In this study, scrap tyre management techniques including landfill, retreading, recycling, combustion, and conversion to liquid fuels was reviewed (including gasification, hydrothermal liquefaction, and pyrolysis). The effects of parameters such as reactor types, pyrolysis temperature, and catalyst on the oil, gas and solid products in pyrolysis process were investigated.

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“…The fuel that presents the most serious microbial problems is diesel. The amount of sulphur contained in diesel engine fuel should be as low as possible (Aydin and Ilkilic, 2012). The condition required for microbial growth and the method used to monitor and to control this activity are discussed (Christine, 1998).…”

Section: Introductionmentioning

confidence: 99%