scholarly journals Experimental Analysis of Temperature Influence on Waste Tire Pyrolysis

Energies ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 5403
Author(s):  
Zoran Čepić ◽  
Višnja Mihajlović ◽  
Slavko Đurić ◽  
Milan Milotić ◽  
Milena Stošić ◽  
...  
Keyword(s):  
Heating Rate ◽  
Oil And Gas ◽  
Pyrolysis Temperature ◽  
Pyrolysis Product ◽  
Passenger Vehicle ◽  
Base Diameter ◽  
Waste Tire ◽  
Thermochemical Process ◽  
Pyrolytic Oil ◽  
Secondary Cracking

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.

scholarly journals Waste Tire Pyrolysis Product: An Alternative to Petrochemical Feedstock

2021 ◽  
pp. 40-50
Author(s):  
Christian C. Egwuonwu ◽  
Rosemary U. Arinze ◽  
Paul C. Agbata ◽  
Vera C. Ike
Keyword(s):  
Oil And Gas ◽  
Pyrolysis Product ◽  
Population Increase ◽  
Gas Chromatography Mass Spectrometry ◽  
P Value ◽  
Hexadecenoic Acid ◽  
Industrial Chemistry ◽  
Waste Tire ◽  
Waste Tyre ◽  
Conventional Pyrolysis

Aim: The amount of waste tire generated constantly in the modern society is on a rapid increase due to the world’s urbanization, industrialization and population increase. This research was conducted to recover useful products from waste tyre and harness the possibility of using these products as a petrochemical feedstock alternative. Study Design: Conventional pyrolysis was used to produce bio char, bio-oil and bio-gas Place and Duration of Study: The research was carried out in the department of Pure and Industrial Chemistry and Mechanical Engineering Nnamdi Azikiwe University between January 2020 and march 2020 Methodology: Waste tyre was pyrolyzed using a conventional pyrolysis over three different temperature 400,550 and 750oC. The yield of the oil and char was determined by weight measurement, while that of gas was determined by mass balancing. The oil produced was characterized using GC/MS (gas chromatography/mass spectrometry) Results: The percentage yield of char, oil and gas at 400oC, 550oC and 750oC respectively are 62, 24, 14; 48, 36.2, 15.8 and 42, 40, 18. The statistical analysis of yield gave a p-value of 0.785211 this showed that there is no significant change across the three samples statistically. The GC/MS analyses of the oil showed that the oil contains more than 35 compounds of which 6 accounted for more than 50% of the oil, these six include d-limonene with 12.83%, 1-2- benzene dicarboxylic acid with 10.48%, benzene, 1-ethyl-3methyl with 8.89%, benzene 1-methyl-3-(1-methylethyl) with 8.6%, benzene 1-ethenyl-4-methyl with 6.13% and hexadecenoic acid at 5.27%,while another six accounted for less than 5% of the oil, they includes (1-methylenebut-2-enyl)benzene with 0.89%, 1-methylbut-1,3-dienyl)benzene with 0.71%, naphthalene-2,7-dimethyl with 0.71%, quinoline with 0.96%, Spiro[4,5]dec-7-ene,1,8-dimethyl-4-(1-methylethenyl) with 0.74%, phenol 4-(1,1,3,3-tetramethylbutyl). Conclusion: The composition of tire derived oil are very important petrochemicals derivatives which can be separated or can be used as feedstocks for petrochemical industries.

Study on Pyrolysis Characteristic of the Waste Tires

2012 ◽  
Vol 190-191 ◽  
pp. 560-566 ◽  
Author(s):  
Lu Lu Yu ◽  
Zhao Ping Zhong ◽  
Kuan Ding ◽  
Zhi Chao Liu
Keyword(s):  
Mass Loss ◽  
Oil And Gas ◽  
Pyrolysis Temperature ◽  
Mass Loss Rate ◽  
Small Mass ◽  
Maximum Temperature ◽  
Pyrolysis Oil ◽  
Waste Tire ◽  
Gas Products ◽  
Pyrolysis Oils

The effects of pyrolysis temperature on the yields of char ,oil and gas produced in the waste tire pyrolysis process ,the effects of temperature on the concentration of gas and pyrolysis oil constitutes, and the effects of HY-51 (as catalyst) on the yields and on the concentration of gas constitutes, were studied in detail. The experiments showed that the effects of pyrolysis temperature on liquid and gas products were important. The yields of the gas were primate raised, then reduced. When the pyrolysis temperature reached 550°C, the yields of oil can reach to above 45%. when adding catalyst, the yields raised to 50%.Gas product were component of H2, CH4, CO,CO2 and C2-C3, etc., there were a lot of macromolecular aromatic, and contain acid, hydrocarbon, ketone, heterocyclic (containing S, O, N, etc)in pyrolysis oil. we had been done the thermogravimetric experiments. Which were indicated that waste tire have three main mass loss stages. The range of first stage temperature was 200-350°C, 270°C was the maximum temperature of mass loss ,and the mass loss rate reached to 20.4%;The second stage mass loss temperature was 350-600 °C, the biggest temperature mass loss were in 484 °C and 547 °C, this stage rate was 64.6%; the range of the third stage was 600-675 °C, had a small mass loss peak, the rate just was 2.5% The pyrolysis oils analysis were provided the basic data for the chemical and energy basic on pyrolysis and pyrolysis characteristic of the waste tire.

scholarly journals Pyrolysis of Coconut Shell: An Experimental Investigation

2009 ◽  
Vol 6 (2) ◽  
pp. 33 ◽  
Author(s):  
E. Ganapathy Sundaram ◽  
E. Natarajan
Keyword(s):  
Particle Size ◽  
Heating Rate ◽  
Residence Time ◽  
Pyrolysis Temperature ◽  
Fixed Bed ◽  
Pyrolysis Product ◽  
Fixed Bed Reactor ◽  
Coconut Shell ◽  
Process Conditions ◽  
Liquid Yield

 Fixed-bed slow pyrolysis experiments of coconut shell have been conducted to determine the effect of pyrolysis temperature, heating rate and particle size on the pyrolysis product yields. The effect of vapour residence time on the pyrolysis yield was also investigated by varying the reactor length. Pyrolysis experiments were performed at pyrolysis temperature between 400 and 600°C with a constant heating rate of 60°C/min and particle sizes of 1.18-1.80 mm. The optimum process conditions for maximizing the liquid yield from the coconut shell pyrolysis in a fixed bed reactor were also identified. The highest liquid yield was obtained at a pyrolysis temperature of 550 °C, particle size of 1.18-1.80 mm, with a heating rate of 60 °C/min in a 200 mm length reactor. The yield of obtained char, liquid and gas was 22-31 wt%, 38-44 wt% and 30-33 wt% respectively at different pyrolysis conditions. The results indicate that the effects of pyrolysis temperature and particle size on the pyrolysis yield are more significant than that of heating rate and residence time. The various characteristics of pyrolysis oil obtained under the optimum conditions for maximum liquid yield were identified on the basis of standard test methods. 

Microwave Pyrolysis (MP) of Sewage Sludge: Profile of Bio-Fuel Production

2012 ◽  
Vol 550-553 ◽  
pp. 447-451 ◽  
Author(s):  
Lin Fang ◽  
Shan Ting Li ◽  
Na Na Yuan ◽  
Xu Xin Zhao
Keyword(s):  
Heating Rate ◽  
Energy Recovery ◽  
Oil And Gas ◽  
Pyrolysis Temperature ◽  
Potential Method ◽  
Gas Production ◽  
Fuel Production ◽  
Oil And Gas Production ◽  
Microwave Pyrolysis ◽  
Maximum Heating

This paper mainly focused on the characteristics of pyrolysis temperature and the bio-fuel production, and the energy recovery efficiency of sludge by MP was also explored.The results show that the final temperature of sample added carbonaceous residue (CR) is above 700°C and the maximum heating rate is up to 1.783°C/s. While the maximum heating rate of sludge with activated carbon (AC) is 1.084°C/s. The caloric value of the oil production can reach 41.57MJ/kg, and the content of PAHs is less than 4.54%. The volume fractions of H2 and CO in the gas production are higher than 54%, and the caloric values are higher than 9 540kJ/m3. The oil and gas production can use as the bio-fule.The energy of total bio-fuel obtained sample with CR is 6.99MJ/kg, and the energy recovery ratio is up to 45.63%. The MP is a potential method for the energy recovery of sludge.

scholarly journals Development of a rotary kiln reactor for pyrolytic oil production from waste tire in Indonesia

2019 ◽  
Vol 245 ◽  
pp. 012044 ◽  
Author(s):  
M Syamsiro ◽  
M S Dwicahyo ◽  
Y Sulistiawati ◽  
M Ridwan ◽  
N Citrasari
Keyword(s):  
Rotary Kiln ◽  
Oil Production ◽  
Waste Tire ◽  
Pyrolytic Oil

scholarly journals Evaluation of Hydrogen Yield Evolution in Gaseous Fraction and Biochar Structure Resulting from Walnut Shells Pyrolysis

Energies ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 6359
Author(s):  
Elena David
Keyword(s):  
Heating Rate ◽  
Pyrolysis Temperature ◽  
Walnut Shell ◽  
Hydrogen Yield ◽  
X Ray Diffraction ◽  
Fast Heating ◽  
X Ray ◽  
Walnut Shells ◽  
Water Vapors ◽  
Gaseous Fraction

Conversion experiments of wet and dry walnut shells were performed, the influence of moisture content on the hydrogen yield in the gas fraction was estimated and the resulted biochar structure was presented. Measurements of the biochar structures were performed using X-ray diffraction and scanning electron microscopy methods. The results demonstrate that heating rate played a key role in the pyrolysis process and influenced the biochar structure. Under fast heating rate, the interactions between the water vapors released and other intermediate products, such as biochar was enhanced and consequently more hydrogen was generated. It could also be observed that both biochar samples, obtained from wet and dry walnut shells, had an approximately smooth surface and are different from the rough surface of the raw walnut shell, but there are not obvious differences in shape and pores structure between the two biochar samples. The increasing of the biochar surface area versus pyrolysis temperature is due tothe formation of micropores in structure. The biochar shows a surface morphology in the form of particles with rough, compact and porous structure. In addition the biochar structure confirmed that directly pyrolysis of wet walnut shells without predried treatment has enhanced the hydrogen content in the gas fraction.

Scrap Tires Pyrolysis: Product Yields, Properties and Chemical Compositions of Pyrolytic Oil

2018 ◽  
Vol 91 (10) ◽  
pp. 1603-1611 ◽  
Author(s):  
S. Chouaya ◽  
M. A. Abbassi ◽  
R. B. Younes ◽  
A. Zoulalian
Keyword(s):  
Pyrolysis Product ◽  
Chemical Compositions ◽  
Scrap Tires ◽  
Product Yields ◽  
Pyrolytic Oil
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