scholarly journals Influence of Interactions among Polymeric Components of Automobile Shredder Residue on the Pyrolysis Temperature and Characterization of Pyrolytic Products

Polymers ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1682 ◽  
Author(s):  
Bin Yang ◽  
Ming Chen
Keyword(s):  
Energy Recovery ◽  
Lower Cost ◽  
Pyrolysis Temperature ◽  
Pyrolysis Process ◽  
Shredder Residue ◽  
Gaseous Products ◽  
Automobile Shredder Residue ◽  
Gas Products

Pyrolysis and gasification have gradually become the main means to dispose of automobile shredder residue (ASR), since these methods can reduce the volume and quality of landfill with lower cost and energy recovery can be conducted simultaneously. As the ASR pyrolysis process is integrated, the results of pyrolysis reactions of organic components and the interaction among polymeric components can be clarified by co-pyrolysis thermogravimetric experiments. The results show that the decomposition mechanisms of textiles and foam are markedly changed by plastic in the co-pyrolysis process, but the effect is not large for rubber and leather. This effect is mainly reflected in the pyrolysis temperature and pyrolysis rate. The pyrolytic trend and conversion curve shape of the studied ASR can be predicted by the main polymeric components with a parallel superposition model. The pyrolytic product yields and characterizations of gaseous products were analyzed in laboratory-scale non-isothermal pyrolysis experiments at finished temperatures of 500 °C, 600 °C, and 700 °C. The results prove that the yields of pyrolytic gas products are determined by the thermal decomposition of organic substances in the ASR and final temperature.

Pyrolysis process for treatment of automobile shredder residue: preliminary experimental results

2001 ◽  
Vol 42 (5) ◽  
pp. 573-586 ◽  
Author(s):  
S Galvagno ◽  
F Fortuna ◽  
G Cornacchia ◽  
S Casu ◽  
T Coppola ◽  
...  
Keyword(s):  
Experimental Results ◽  
Pyrolysis Process ◽  
Shredder Residue ◽  
Automobile Shredder Residue

scholarly journals Py–FTIR–GC/MS Analysis of Volatile Products of Automobile Shredder Residue Pyrolysis

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2734
Author(s):  
Bin Yang ◽  
Ming Chen
Keyword(s):  
Alternative Energy ◽  
Oil And Gas ◽  
Gaseous Product ◽  
Steam Gasification ◽  
Pyrolysis Oil ◽  
Shredder Residue ◽  
Gaseous Products ◽  
Automobile Shredder Residue ◽  
Ms Analysis ◽  
Volatile Products

Automobile shredder residue (ASR) pyrolysis produces solid, liquid, and gaseous products, particularly pyrolysis oil and gas, which could be used as renewable alternative energy resources. Due to the primary pyrolysis reaction not being complete, the yield of gaseous product is low. The pyrolysis tar comprises chemically unstable volatiles before condensing into liquid. Understanding the characteristics of volatile products will aid the design and improvement of subsequent processes. In order to accurately analyze the chemical characteristics and yields of volatile products of ASR primary pyrolysis, TG–FTIR–GC/MS analysis technology was used. According to the analysis results of the Gram–Schmidt profiles, the 3D stack plots, and GC/MS chromatograms of MixASR, ASR, and its main components, the major pyrolytic products of ASR included alkanes, olefins, and alcohols, and both had dense and indistinguishable weak peaks in the wavenumber range of 1900–1400 cm−1. Many of these products have unstable or weaker chemical bonds, such as =CH–, =CH2, –C=C–, and –C=CH2. Hence, more syngas with higher heating values can be obtained with further catalytic pyrolysis gasification, steam gasification, or higher temperature pyrolysis.

Simulation Assessment of Dangerous Consequence Caused by Toxic Gas Products during KCN Decontamination Process

2015 ◽  
Vol 1092-1093 ◽  
pp. 907-911
Author(s):  
Ya Wei Cai ◽  
Hua Min Tang ◽  
Xin Gang Wang ◽  
Lian Yuan Wang ◽  
Hai Yan Zhu
Keyword(s):  
Emergency Management ◽  
Large Volume ◽  
Flow Speed ◽  
Personal Safety ◽  
Cyanide Ion ◽  
Gaseous Products ◽  
Gas Products ◽  
Higher Temperature ◽  
Toxic Gas

Chlorine-based or per-oxygen-based decontaminants could be used for destruction of cyanide ion in the emergency management of leakage. During destruction, poisonous gases like ClCN and HCN were often produced. It may lead to serious damage for personal safety and quality of environment. In this study, the amount of gaseous products of ClCN and HCN during destruction of KCN by hypochlorite solutions and peroxyl acid were first measured. And quantitative risks assessments correspond to different damage criterions were established. Results showed that toxic HCN gas would form once KCN aqueous exposed to atmosphere. And different decontaminants would result in different hazardous gasses. Chlorine-based decontaminants reacted with KCN would cause toxic gas of ClCN, and it lead to relatively larger depth of damage. It would cause medial lethal depth of damage under certain conditions, such as higher concentration of decontaminant, lower flow speed, higher temperature and large volume of KCN being destructed. For per-oxygen-based decontaminants, toxic HCN gas produced would cause relatively smaller depth of damage.

scholarly journals The Effect of Pyrolysis Temperature and Time of Polypropylene on Quality of Carbon Nanotube with Flame Synthesis Method

2018 ◽  
Vol 67 ◽  
pp. 03030
Author(s):  
Praswasti P.D.K Wulan ◽  
Juan Octavian Daniel Sidauruk ◽  
Juli Ayu Ningtyas
Keyword(s):  
Particle Size ◽  
Pyrolysis Temperature ◽  
Synthesis Method ◽  
Average Crystallite Size ◽  
Flame Synthesis ◽  
Combustion Gas ◽  
Yield And Quality ◽  
Optimal Quality

Variations of the pyrolysis temperature and time are carried out to obtain the correlation between those variables and the number of pyrolysis gases, as well as the yield and quality of produced CNT. PP is pyrolyzed at a temperature range of 525-600°C to produce pyrolizate gases. The flame synthesis method is used to convert PP plastic waste into CNT alongside with the use of wired mesh stainless steel type SS 316 as the substrate. The substrate is pre-treated by oxidative heat treatment at 800°C for 10 minutes before the synthesis to breach the outer chromium layer and make grains on the catalytic surface to enable CNT to grow. Pyrolizate gases are mixed with oxygen flowed from a venturi, so combustion reaction occurs. The combustion gas is flowed to the synthesis reactor to produce CNT at 800°C. Characterization of produced CNT is carried out using XRD, GC-FID, and TEM. The highest yield is obtained at the pyrolysis temperature of 525°C for 45 minutes. While the optimal quality based on the structure, crystalline and particle size is achieved at the pyrolysis temperature of 525°C for 30 minutes which results in CNT with 23.81 nm of average crystallite size and 104.8 nm of particle size.

scholarly journals PENGARUH SUHU, WAKTU, DAN KADAR AIR PADA PIROLISIS PELEPAH KELAPA SAWIT

2017 ◽  
Vol 6 (2) ◽  
pp. 14-18
Author(s):  
Frist Silia ◽  
Seri Maulina
Keyword(s):  
Processing Time ◽  
Pyrolysis Temperature ◽  
Ph Value ◽  
Gas Production ◽  
Effect Of Temperature ◽  
Pyrolysis Process ◽  
Liquid Smoke ◽  
Yield And Quality ◽  
Increasing Temperature

Palm plantations in Indonesia began to grow rapidly since the early 80s. The area of ​​Indonesia's oil palm in 2013 was 10.4 million ha and increased 4.69% annually.  The production of palm midrib was about 22 midribs per tree per year with the weight of midrib meat ranging from 2.2 kg. The palm midrib is composed of cellulose, hemicellulose, and lignin, which can be used as liquid smoke. The purpose of this study was to analyze the effect of temperature and time of pyrolysis on the yield and quality of liquid smoke produced. The pyrolysis process of fractured palm was performed at 150 ºC, 200 ºC, and 250 ºC for 30 minutes, 60 minutes, 90 minutes. The results indicated that the yield of liquid smoke tends to decrease with increasing pyrolysis temperature, and tends to increase with increasing pyrolysis time in which the difficult condensed gas production increases with increasing temperature and time of pyrolysis. The highest yield of liquid smoke pyrolysis temperature of 150 OC with pyrolysis time 120 minutes that is equal to 43.47%. In this study, obtained the best results for a pH value of 3.1 is done at process temperatures of 250 ° C with processing time 60 minutes

scholarly journals THE EFFECT OF TEMPERATURE PYROLYSIS PROCESS OF USED TIRES ON THE QUALITY OF OUTPUT PRODUCTS

2013 ◽  
Vol 7 (1) ◽  
pp. 20-25 ◽  
Author(s):  
Natália Jasminská ◽  
Tomáš Brestovič ◽  
Mária Čarnogurská
Keyword(s):  
Organic Materials ◽  
Organic Liquid ◽  
Liquid Product ◽  
Effect Of Temperature ◽  
Solid Residue ◽  
Pyrolysis Process ◽  
Operational Conditions ◽  
Gas Products ◽  
Pyrolytic Oil

Abstract Pyrolysis together with gasification and combustion create a group of so called thermic processes. Unlike the combustion it is based on thermic decomposition of organic materials without any access of oxidative media. Within the pyrolytic process, three main fractions are created: solid residue, pyrolytic gas and organic liquid product - pyrolytic oil. The presented article examines the effects of pyrolysis operational conditions (above all, temperature) on gas products, solid residues and liquid fractions.

scholarly journals Experimental and Numerical-Driven Prediction of Automotive Shredder Residue Pyrolysis Pathways toward Gaseous Products

Energies ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1779
Author(s):  
Rafał Ślefarski ◽  
Joanna Jójka ◽  
Paweł Czyżewski ◽  
Michał Gołębiewski ◽  
Radosław Jankowski ◽  
...  
Keyword(s):  
Laminar Flame ◽  
Flame Temperature ◽  
Combustion Process ◽  
Calorific Value ◽  
Pyrolysis Process ◽  
Heating Rates ◽  
Shredder Residue ◽  
Gaseous Products ◽  
Refuse Derived Fuel ◽  
Automotive Shredder Residue

There has been a gradual increase in the field of parts recovery from cars that are withdrawn from use. However, the disposal of automotive shredder residue (ASR) still remains a significant problem. ASR is refuse derived fuel (RDF), which contains mainly plastics, fiber sponges, and rubbers in different proportions, and therefore a thermal treatment of selected waste samples is applied. The presented research includes thermogravimetry (TG) analysis and differential thermogravimetric (DTG) analysis, as well as a proximate and an ultimate analysis of the ASR samples. The obtained results were processed and used as an input for modelling. The numerical calculations focused on the identification of the ASR’s average composition, the raw pyrolysis process product, its dry pyrolytic gas composition, and the combustible properties of the pyrolytic gases. The TGA analysis with three heating rate levels covered the temperature range from ambient to 800 °C. The thermal decomposition of the studied samples was in three stages confirmed with three peaks observed at the temperatures 280, 470, and 670 °C. The amount of solid residue grew with the heating rates and was in the range of 27–32 wt%. The numerical calculation of the pyrolysis process showed that only 0.46 kg of dry gas were formed from 1 kg of ASR. The gas yield increased with the rising temperature, and, at the same time, its calorific value decreased from 19.22 down to 14.16 MJ/m3. This is due to the decomposition of C6+ hydrocarbons and the promotion of CO formation. The thermodynamic parameters of the combustion process for a pyrolytic gas air mixture, such as the adiabatic flame temperature and laminar flame speed, were higher than for methane and were, respectively, 2073 °C and 1.02 m/s.

Sign in / Sign up

Export Citation Format

Share Document