Gaseous products of microwave pyrolysis of scrap tires

Yatsun, Andrey; Konovalov, P. N.; Konovalov, N. P.

doi:10.3103/s0361521908030130

Cited by 32 publications

(16 citation statements)

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“…Microwave pyrolysis has also been successfully used to transform car tyres into carbon black, steel, liquid hydrocarbon oil, and gaseous hydrocarbons [75]. In addition, the pyrolysis has been applied to decontaminate oil-contaminated drill cuttings [33].…”

Section: Hazardous Waste Processingmentioning

confidence: 99%

A Review on Waste to Energy Processes Using Microwave Pyrolysis

2016

Thermochemical Waste Treatment

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This paper presents an extensive review of the scientific literature associated with various microwave pyrolysis applications in waste to energy engineering. It was established that microwave-heated pyrolysis processes offer a number of advantages over other processes that use traditional thermal heat sources. In particular, microwave-heated processes show a distinct advantage in providing rapid and energy-efficient heating compared to conventional technologies, and thus facilitating increased production rates. It can also be established that the pyrolysis process offers an exciting way to recover both the energetic and chemical value of the waste materials by generating potentially useful pyrolysis products suitable for future reuse. Furthermore, this review has revealed good performance of the microwave pyrolysis process when compared to other more conventional methods of operation, indicating that it shows exceptional promise as a means for energy recovery from waste materials. Nonetheless, it was revealed that many important characteristics of the microwave pyrolysis process have yet to be raised or fully investigated. In addition, limited information is available concerning the characteristics of the microwave pyrolysis of waste materials. It was thus concluded that more work is needed to extend existing understanding of these aspects in order to develop improvements to the process to transform it into a commercially viable route to recover energy from waste materials in an environmentally sustainable manner. OPEN ACCESSEnergies 2012, 5 4210

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Section: Hazardous Waste Processingmentioning

confidence: 99%

A Review on Waste to Energy Processes Using Microwave Pyrolysis

2016

Thermochemical Waste Treatment

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“…Pyrolysis with the use of microwave field energy differs from the traditional methods of pyrolysis in that the feedstock is heated to the temperature of destruc tion simultaneously over the entire volume of the material [1][2][3][4][5] rather than by convection from the sur face inward the bulk [6,7]. This is explained by the fact that the dipoles of polar dielectrics (in this case, these are vulcanized rubber and chemical additives in rubber [1,8]) rotate in a variable microwave electromagnetic field to cause the so called internal friction of material molecules.…”

Section: No Componentmentioning

confidence: 99%

“…This is explained by the fact that the dipoles of polar dielectrics (in this case, these are vulcanized rubber and chemical additives in rubber [1,8]) rotate in a variable microwave electromagnetic field to cause the so called internal friction of material molecules. The temperature to which the material is heated and the time of destruction mainly depend on energy input per unit time, that is, on the parameters of a high frequency generator (magnetron) and the construction of a working chamber [1][2][3][4][5].…”

Section: No Componentmentioning

confidence: 99%

Liquid products of the microwave pyrolysis of scrap tires

2013

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“…As a complex composite material that is expendable, produced in large quantities, and potentially environmentally hazardous, automotive tyres present a challenging disposal problem. A number of research groups have examined the possibility of recycling scrap tyres using microwave-assisted pyrolysis, recovering a gas and oil fuel product, steel, and high value activated carbon or carbon black [145][146][147][148]. Furthermore, the absence of oxygen in the pyrolysis process means NOx, SOx and other harmful organic emissions are significantly reduced compared with disposal by incineration.…”

Section: Processing Of Problematic Waste 2511 Scrap Tyresmentioning

confidence: 99%

Microwave-assisted pyrolysis of HDPE using an activated carbon bed

et al. 2012

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Plastics play an enormous role in modern manufacturing, but the extraction and refining of raw materials, followed by the synthesis of plastics themselves, represents an enormous energy investment into a product that is all too often simply "thrown away" into a landfill after a single use. Microwave-assisted pyrolysis is a recycling technique that allows the recovery of chemical value from plastic waste by breaking down polymers into useful smaller hydrocarbons using microwave heat in the absence of oxygen. This dissertation examines the use of a catalytic activated carbon bed in this procedure, using high density polyethylene (HDPE) as a model plastic. Initial tests with the batch input of HDPE produced a condensed pyrolysis oil comprising 35.5-45.3% aromatics, with the remainder primarily short-chain aliphatics. This oil was approximately three times lighter than that produced in the absence of catalyst, with a narrower range of molecular masses that matched those of the liquid transport fuels petrol and diesel (C 5-C 21). The non-condensable gases that resulted were short-chain aliphatics that could be used as feedstock for the creation of new chemicals (such as virgin HDPE), or fuels such as natural gas and LPG. The development of apparatus capable of adding sample in a continuous fashion enabled the processing of larger quantities of HDPE, and resulted in condensed products with a significantly higher aromatic content (>80% at 450°C), and which I owe a debt of thanks to many people for the support and kindness they have shown me throughout my time in Cambridge. I would like to thank my supervisor, Professor Howard Chase, for his generous provision of tutelage, expertise, and support throughout the production of this work. A further thank you to my colleagues and the department support staff for their extremely skilled time and advice. I would also like to acknowledge the generous financial support that I have received from the Cambridge Commonwealth Trust, The Higher Education Funding Council for

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Gaseous products of microwave pyrolysis of scrap tires

Cited by 32 publications

References 0 publications

A Review on Waste to Energy Processes Using Microwave Pyrolysis

A Review on Waste to Energy Processes Using Microwave Pyrolysis

Liquid products of the microwave pyrolysis of scrap tires

Microwave-assisted pyrolysis of HDPE using an activated carbon bed

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