Liquid products of the microwave pyrolysis of scrap tires

Yatsun, Andrey; Konovalov, N. P.; Efimenko, I. S.

doi:10.3103/s0361521913040137

Cited by 6 publications

(3 citation statements)

References 1 publication

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“…In Korea, high-efficiency complex screening technology has been studied that can separate metals, FLUFF (very light weight waste), and PVC (polyvinylchloride) plastics by more than 90% and 95%, respectively [3]. The separated and sorted combustible materials can be subjected to pyrolysis gasification and used as a heat source, or liquefied to produce materials with added value [10][11][12][13][14]. In this regard, the thermal decomposition properties of ASR have been provided in several previous studies and papers.…”

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confidence: 99%

Thermogravimetric Kinetic Study of Automobile Shredder Residue (ASR) Pyrolysis

et al. 2020

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The separated and sorted combustibles from automobile shredder residue (ASR) can be pyrolyzed and used as a heat source or liquefied to produce materials with added value. In this study, the thermal decomposition properties of ASR were determined and thermal kinetic studies were performed. Four types of raw materials were separated from ASR and mixed at a constant ratio: 38.5 wt.% of plastic; 31.6 wt.% of fiber; 17.3 wt.% of sponge; and 12.3 wt.% of rubber. Pyrolysis kinetics analysis was carried out using the Thermogravimetric analysis-derivative thermogravimetry (TGA-DTG) technique and activation energy were calculated by differential and integral isoconversional model methods, Flynn-Wall-Ozawa (FWO), Kissinger-Akahira-Sunose (KAS), and Friedman. Thermogravimetric analysis was performed under nitrogen with four temperature rate conditions from room temperature to 800 °C. In the thermal degradation profile, peaks representing mass loss rates were observed for each sample at different temperature ranges. It was observed that the final mass reduction temperature in the mixed samples was lower than in the individual samples. The activation energies of plastics and rubbers were 105.39 kJ/mol and 115.20 kJ/mol respectively. The sponge foams and fibers were 172.59 kJ/mol and 160.30 kJ/mol respectively. The mixed sample had an activation energy value of 159.56 kJ/mol. The basic physicochemical and pyrolysis characteristics of ASR were examined to be used as basic data for the recycling of ASR for future pyrolysis.

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confidence: 99%

Thermogravimetric Kinetic Study of Automobile Shredder Residue (ASR) Pyrolysis

et al. 2020

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“…When tires are placed in landfills, toxic substances formed during the rubber destruction enter the atmosphere, soil and water, since in the presence of air rubber also oxidizes over time. In this regard, both burning and landfilling of tires are not environmentally friendly and require the development of a new method for their disposal [2]. Due to environmental hazards arising from tire burning, the European Union in 2003 adopted a special Directive prohibiting tire burning.…”

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confidence: 99%

“…In our country, rubber waste is mainly processed by thermal methods: gasification, hydrogenation and pyrolysis, since the use of these methods allows obtaining pyrolysis gas and liquid hydrocarbons, which are a valuable raw material for the chemical industry, as well as a solid residue from which a good carbon sorbent can be produced. Metal cord is also returned to process cycle and used in steel production [2].…”

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confidence: 99%

The Study of the Distillation Volume of the Liquid Tire Pyrolysis Product

et al. 2020

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At present, the disposal of polymer and rubber waste, and especially automobile tires, is one of the most acute environmental problems. These types of waste pollute the environment both when they are stored at landfills and during subsequent disposal, especially if it is carried out in the form of incineration. Therefore, at present, much attention is paid to thermal methods of their processing. The results of the study of liquid product of pyrolysis of tires of Kuznetskecology+ LLC are presented in the work. During its distillation, the following fractures were obtained (the yield wt% is indicated in parentheses): petroleum (4), gasoline (21), kerosene (18), diesel (47), fuel oil (10), for which the refractive index was determined and a conclusion about their chemical composition was drawn. When analyzing the data obtained during the analysis of liquid pyrolysis product and its fractions, as well as on the basis of published data, possible chemical reactions occurring during vulcanized rubber pyrolysis are proposed. Research results show that pyrolysis products are valuable chemical raw materials that have great prospects for industrial use, including the production of synthetic motor fuels.

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