Recovery of carbon black from waste tire in continuous commercial rotary kiln pyrolysis reactor

Xu, Junqing; Yu, Jiaxue; He, Wenzhi; Huang, Juwen; Xu, Junshi; Li, Guangming

doi:10.1016/j.scitotenv.2021.145507

Cited by 64 publications

(34 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Pyrolytic oil obtained from pyrolysis of waste automotive tires is dark-brown liquid, which looks like a petroleum fraction. Since the most common polymer component of automotive tires is styrene-butadiene, which has both an aromatic (styrene) and aliphatic (butadiene) structure, pyrolytic oil is a mixture of aromatic and aliphatic compounds [41]. There was no phase separation in the pyrolytic oil obtained in experiments.…”

Section: Pyrolytic Oilmentioning

confidence: 93%

Experimental Analysis of Temperature Influence on Waste Tire Pyrolysis

et al. 2021

View full text Add to dashboard Cite

Pyrolysis is an optimal thermochemical process for obtaining valuable products (char, oil, and gas) from waste tires. The preliminary research was done on the three groups of samples acquired by cutting the same waste tire of a passenger vehicle into cylindrical granules with a base diameter of 3, 7, and 11 mm. Each batch weighed 10 g. The heating rate was 14 °C/min, and the final pyrolysis temperature was 750 °C, with 90 s residence time. After the pyrolysis product yields were determined for all of the three sample groups, further research was performed only on 3 mm granules, with the same heating rate, but with altered final pyrolytic temperatures (400, 450, 500, 550, 600, 650, 700, and 750 °C). The results of this study show that thermochemical decomposition of the waste tire sample takes place in the temperature range of 200–500 °C, with three distinct phases of degradation. The highest yield of the pyrolytic oil was achieved at a temperature of 500 °C, but further heating of volatile matters reduced the oil yield, and simultaneously increased the yield of gas, due to the existence of secondary cracking reactions. The analysis of pyrolytic oil and char showed that these products can be used as fuel.

show abstract

Section: Pyrolytic Oilmentioning

confidence: 93%

Experimental Analysis of Temperature Influence on Waste Tire Pyrolysis

et al. 2021

View full text Add to dashboard Cite

show abstract

“…During the pyrolysis process, the organic volatile matter of tires, mainly the rubber polymers, are decomposed to lower molecular weight products, oils, and gases, while the inorganic compounds and the nonvolatile carbon black, contained in the waste tire, remain as solid char residue [10]. Many research groups have demonstrated that pyrolytic oils can be used as fuels [11][12][13][14][15][16] or chemical feedstock [17][18][19], the gas can be used as a process fuel [20][21][22][23], and the char has the potential to be used as carbon black or activated carbon (AC) [24][25][26]. The yields and characteristics of pyrolysis products depend on the waste tires feedstock (composition and particle size) and the operating parameters, such as temperature, heating rate, vapors/solid residence time, and atmosphere.…”

Section: Introductionmentioning

confidence: 99%

“…The surface area of an adsorbent is generally a key parameter when considering its adsorption properties. Chars derived from the pyrolysis of waste tires were found to have surface areas of 30-90 m 2 g −1 [24][25][26][27], which are too low for use as an adsorbent as compared to a commercial carbonbased adsorbent. The activation process is often employed to improve the textural and chemical properties of carbon materials, using both heat and an activating agent.…”

Section: Introductionmentioning

confidence: 99%

Potential Valorization of Waste Tires as Activated Carbon-Based Adsorbent for Organic Contaminants Removal

Frikha

Limousy

Claret³

et al. 2022

Materials

View full text Add to dashboard Cite

The present study investigates the potential of waste tires to produce a valuable adsorbent material for application in wastewater treatment. In the first stage, the pyrolysis of ground rubber tire was explored using non-isothermal and isothermal thermogravimetric analysis experiments. The effect of operating parameters, such as heating rate and pyrolysis temperature, on the pyrolysis product yields was considered. The slow pyrolysis of ground rubber tire was taken up in a large-scale fixed-bed reactor for enhanced char recovery. Four pyrolysis temperatures were selected by thermogravimetric data. The product yields were strongly influenced by the pyrolysis temperature; at higher temperatures, the formation of more gases and liquid was favored, while at lower pyrolysis temperatures, more char (solid fraction) was formed. The produced chars were characterized in terms of mineral composition, textural properties, proximate analysis, and structural properties to identify the relationships between the pyrolysis temperature and the char properties. In a second step, a series of activated chars were prepared, starting from the pyrolytic chars via chemical and/or physical activation methods. Then, the activated chars were characterized and tested as adsorbents for atrazine and ibuprofen. Adsorption experiments in aqueous media were carried out in a small-scale batch reactor system. Chemical activation seems appropriate to significantly reduce the inorganic compounds initially present in ground rubber tire and contribute to an important increase in the surface area and porosity of the chars. Adsorption experiments indicated that chemically activated chars exhibit high aqueous adsorption capacity for atrazine.

show abstract

“…The gases produced (syngas) comprise hydrocarbons, H 2 , CO, CO 2 , and H 2 S, and they are mainly used in combustion to meet the heat energy required by the pyrolysis process. Solid black carbon is the main type of residual char obtained during waste tire pyrolysis, and it can be reutilized as carbon black or upgraded activated carbon, which is suitable for adsorbing heavy metals from water [20][21][22]. WTPO is a dark-brown dense liquid with a strong odor, and it is composed of hydrocarbons of various natures: aliphatic (alkanes), aromatic (benzene, toluene, xylene, ethylbenzene, and small amounts of PAH), and heteroatom compounds.…”

Section: Characteristics Of Wtpomentioning

confidence: 99%

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

Hossain

Choi

2021

Catalysts

View full text Add to dashboard Cite

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.

show abstract

Recovery of carbon black from waste tire in continuous commercial rotary kiln pyrolysis reactor

Cited by 64 publications

References 65 publications

Experimental Analysis of Temperature Influence on Waste Tire Pyrolysis

Experimental Analysis of Temperature Influence on Waste Tire Pyrolysis

Potential Valorization of Waste Tires as Activated Carbon-Based Adsorbent for Organic Contaminants Removal

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

Contact Info

Product

Resources

About