Pyrolysis characteristics of waste tire particles in fixed-bed reactor with internals

Xu, Shipei; Lai, Dengguo; Zeng, Xi; Li-juan, Zhang; Han, Zhennan; Cheng, Jiguang; Wu, Rongcheng; Mašek, Ondřej; Xu, Guangwen

doi:10.1016/j.crcon.2018.10.001

Cited by 34 publications

(12 citation statements)

References 29 publications

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“…The compounds presented on the liquid fraction have also been reported by other au-thors [10]. Among the complex composition of the liquid fraction, limonene is a major and valuable compound that increases the economic potential of these pyrolytic fractions [47]. It has been reported that limonene concentration significantly decreased at high pyrolysis temperatures [39,47,48], as it is decomposed or transformed into aromatic compounds at higher temperatures (>450 • C) [39,48]; however, some studies have reported the presence of limonene at temperatures above 700 • C [39,47].…”

Section: Liquid Fraction Qualitative Characterizationmentioning

confidence: 61%

“…Among the complex composition of the liquid fraction, limonene is a major and valuable compound that increases the economic potential of these pyrolytic fractions [47]. It has been reported that limonene concentration significantly decreased at high pyrolysis temperatures [39,47,48], as it is decomposed or transformed into aromatic compounds at higher temperatures (>450 • C) [39,48]; however, some studies have reported the presence of limonene at temperatures above 700 • C [39,47]. In this study, the dominant presence of limonene may be associated with the transient conditions of the pyrolysis system and the vapor residence time.…”

Section: Liquid Fraction Qualitative Characterizationmentioning

confidence: 99%

“…In this study, the dominant presence of limonene may be associated with the transient conditions of the pyrolysis system and the vapor residence time. The high heating rate might also be an important factor [47]. a Insignificant amounts of compounds such as indene, p-Cymene, heptatriene, and cyclohexene; b insignificant amounts of compounds such as mesitylene, chamazulene, and fluorene.…”

Section: Liquid Fraction Qualitative Characterizationmentioning

confidence: 99%

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Valorization of Waste Tires by Pyrolysis and Activation Processes

et al. 2021

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The problems related to the increase in the generation of discarded tires demonstrate the need for profitable, efficient, cost-effective, and sustainable processes for their waste management. In particular, the valorization of pyrolytic solids for energy storage applications is of interest. In this study, four processes were performed: (1) pyrolysis; (2) chemical activation and pyrolysis; (3) pyrolysis and physical activation; and (4) chemical activation, pyrolysis, and physical activation. The process consisting of chemical activation, pyrolysis, and physical activation yielded 52% solid material with the highest electrical conductivity (2.43 Ω–1 cm–1) and a surface area of 339 m2/g with an average pore size of 3.6 nm. In addition, it was found that pore size had a greater effect on the conductivity than surface area. Liquid and gas fraction compositions were modified by the presence of chemical activation: aromatization reactions were favored, and limonene was not observed in the liquid fraction, while an increase on the CH4 concentration caused an increment in the heating value of the gas fraction. It was demonstrated that chemical and physical activation enhance the properties of the pyrolytic solid product derived from waste tires that make it suitable for the partial substitution of materials for electric energy storage applications.

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Section: Liquid Fraction Qualitative Characterizationmentioning

confidence: 61%

Section: Liquid Fraction Qualitative Characterizationmentioning

confidence: 99%

Section: Liquid Fraction Qualitative Characterizationmentioning

confidence: 99%

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Valorization of Waste Tires by Pyrolysis and Activation Processes

et al. 2021

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“…Pyrolysis can play a crucial role in the clean conversion of waste tires. It is a thermochemical decomposition process that occurs at elevated temperatures and low pressures in the absence of oxygen which transforms tires into oil, solid char, and low-molecular liquids or gases [4,[8][9][10].…”

Section: Introductionmentioning

confidence: 99%

A Review of the Desulfurization Processes Used for Waste Tire Pyrolysis Oil

Hossain

Choi

2021

Catalysts

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The increasing global population and the rapid industrial development associated therewith have increased the demand for fossil-derived fuel oils. The sources of fossil fuels are limited, and many studies have been being conducted to find alternative fuel sources. Waste tire pyrolysis oil (WTPO) attracts considerable attention as an alternative fuel because its properties are similar to those of diesel oil. However, WTPO has a high sulfur content of >1.0 wt%, which is above the environmental standard limit of 0.1 wt%; therefore, it cannot be used in engines directly. It is thus highly necessary to remove sulfur compounds from tire-derived oils. However, finding an appropriate and environmentally friendly process is proving difficult. This review article presents the various desulfurization methods used to removal sulfur from WTPO, such as hydrodesulfurization (HDS), oxidative desulfurization (ODS), ultrasound-assisted oxidative desulfurization (UAOD), and acid treatment. Of these, HDS is the most expensive as it involves high consumption of hydrogen, high temperature (~450 °C), and high pressure (~200 bar), whereas UAOD is an efficient and economic method of reducing the sulfur content of WTPO.

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“…Therefore, the WTs were liqufied at batch reactor for more oil amount. Furthermore, this reactor have widely used because of its simple structure and easily established with low investment [10,11]. Since 1990s, many studies have been done by different operation conditions of pyrolysis [12].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Waste Tire Pyrolysis Products by GC, ICP-MS, TGA and DSC

Uğuz

Ayanoğlu

2021

Bitlis Eren Üniversitesi Fen Bilimleri Dergisi

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The huge amount of waste tires (WTs) have been disposed to surroundings which cause dangerous effect on nature. Owing to recycled WTs, the pyrolysis is a good technique to dismiss harmful effect of the WTs, by converting into gas, liquid and solid. The present study has two steps of liquefaction at a batch reactor. Firstly, conversion of the WTs into gas, waste tire oil (WTO) and char. Then the WTO were blended with calcium oxide (CaO) or natural zeolite (NZ) at different ratio and pyrolyzed to obtain high quality oil, similar to gasoline fuel (GF) or diesel fuel (DF). The distillation curve is a good key to define fuel quaility. Thus, 10% CaO-WTO blend curve near to the DF. Unfortunately, the mixture was distillated at 54 o C, lower than the DF. Therefore, the blend was separated into two fractions due to intial-final boiling points as 150 o C to 360 o C, named as Diesel like fuel (DLF); between 54 o C to 150 o C, called as gasoline like fuel (GLF). Finally, samples were analyzed to characterizate by GC, ICP-MS, TGA and DSC for similarities of conventional fuels. The heavy metals and other elements of samples were analyzed by ICP-MS techniques. TGA is a good test to determine the oxidative and thermal stabilities of fuel while DSC was used to determine crystallization onset temperature on fuel samples. GC analysis is done for detemening of gas heating value and beside gas contents which has a comprehensive with standard burnable gas. Based on GLF and DLF with unliquified gas results, all of components of products can be burned in engine without any problem.

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Pyrolysis characteristics of waste tire particles in fixed-bed reactor with internals

Cited by 34 publications

References 29 publications

Valorization of Waste Tires by Pyrolysis and Activation Processes

Valorization of Waste Tires by Pyrolysis and Activation Processes

A Review of the Desulfurization Processes Used for Waste Tire Pyrolysis Oil

Characterization of Waste Tire Pyrolysis Products by GC, ICP-MS, TGA and DSC

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