scholarly journals Conversion of Low Density Polyethylene (LDPE) and Polypropylene (PP) Waste Plastics into Liquid Fuel Using Thermal Cracking Process

2012 ◽  
Vol 2 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Moinuddin Sarker
Keyword(s):  
Liquid Fuel ◽  
Thermal Cracking ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Waste Plastics ◽  
Cracking Process

Application of highly stable biochar catalysts for efficient pyrolysis of plastics: a readily accessible potential solution to a global waste crisis

2020 ◽  
Vol 4 (9) ◽  
pp. 4614-4624
Author(s):  
Chenxi Wang ◽  
Hanwu Lei ◽  
Moriko Qian ◽  
Erguang Huo ◽  
Yunfeng Zhao ◽  
...  
Keyword(s):  
Corn Stover ◽  
Catalytic Pyrolysis ◽  
Douglas Fir ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Waste Plastics ◽  
Potential Solution

Biochar catalysts derived from corn stover and Douglas fir were employed for the catalytic pyrolysis of model low-density polyethylene (LDPE) and real waste plastics.

scholarly journals Baseline Data of Low-Density Polyethylene Continuous Pyrolysis for Liquid Fuel Manufacture

Recycling ◽  
2022 ◽  
Vol 7 (1) ◽  
pp. 2
Author(s):  
Aleksandr Ketov ◽  
Vladimir Korotaev ◽  
Natalia Sliusar ◽  
Vladivir Bosnic ◽  
Marina Krasnovskikh ◽  
...  
Keyword(s):  
Liquid Fuel ◽  
Pyrolytic Carbon ◽  
Poor Quality ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Polymer Waste ◽  
Bio Oil ◽  
Heating Oil ◽  
Small Parts

The recycling of end-of-life plastics is a problem, since small parts can be returned into circulation. The rest is burned, landfilled or recycled into low-quality heating oil by pyrolysis methods. The disadvantages of this method are the need to dispose the formed by-product, pyrolytic carbon, the poor quality of produced liquid fuel and the low productivity of the method associated with the periodicity of the process. In this work, methods of thermogravimetry and chromatography–mass spectrometry (GC-MS) have been used to study the co-pyrolysis products of low-density polyethylene (LDPE) and oxygen-containing substances at the pressures of 4–8 MPa and temperatures of 520–620 °C. Experiments have highlighted the conditions needed for producing of high-quality liquid fuel. Initial data have been prepared for the design of a continuous pyrolysis reactor to dispose polymer waste for the production of bio-oil which would be available to enter the petrochemical products market.

Fuels obtained by thermal cracking of individual and mixed polymers

2010 ◽  
Vol 64 (1) ◽  
Author(s):  
Božena Mlynková ◽  
Martin Bajus ◽  
Elena Hájeková ◽  
Gabriel Kostrab ◽  
Dušan Mravec
Keyword(s):  
Batch Reactor ◽  
Thermal Cracking ◽  
Liquid Hydrocarbon ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Mass Ratio ◽  
Feed Composition ◽  
Diesel Fuels ◽  
Diesel Fractions ◽  
Cracking Products

AbstractUtilization of oils/waxes obtained from thermal cracking of individual LDPE (low density polyethylene), HDPE (high density polyethylene), LLDPE (linear low density polyethylene), PP (polypropylene), or cracking of mixed polymers PP/LDPE (1: 1 mass ratio), HDPE/LDPE/PP (1: 1: 1 mass ratio), HDPE/LDPE/LLDPE/PP (1: 1: 1: 1 mass ratio) for the production of automotive gasolines and diesel fuels is overviewed. Thermal cracking was carried out in a batch reactor at 450°C in the presence of nitrogen. The principal process products, gaseous and liquid hydrocarbon fractions, are similar to the refinery cracking products. Liquid cracking products are unstable due to the olefins content and their chemical composition and their properties strongly depend on the feed composition. Naphtha and diesel fractions were hydrogenated over a Pd/C catalyst. Bromine numbers of hydrogenated fractions decreased to values from 0.02 g to 6.9 g of Br2 per 100 g of the sample. Research octane numbers (RON) before the hydrogenation of naphtha fractions were in the range from 80.5 to 93.4. After the hydrogenation of naphtha fractions, RON decreased to values from 61.0 to 93.6. Diesel indexes (DI) for diesel fractions were in the range from 73.7 to 75.6. After the hydrogenation of diesel fractions, DI increased up to 104.9.

Conversion of low density polyethylene (LDPE) over ZSM-5 zeolite to liquid fuel

Fuel ◽  
2017 ◽  
Vol 192 ◽  
pp. 71-82 ◽  
Author(s):  
S.L. Wong ◽  
N. Ngadi ◽  
T.A.T. Abdullah ◽  
I.M. Inuwa
Keyword(s):  
Liquid Fuel ◽  
Low Density Polyethylene ◽  
Low Density

Conversion of Mixed Low-Density Polyethylene Wastes into Liquid Fuel by Novel CaO/SiO2 Catalyst

2016 ◽  
Vol 24 (3) ◽  
pp. 255-263 ◽  
Author(s):  
Mohammad Saleem Khan ◽  
Inamullah ◽  
Mohammad Sohail ◽  
Noor Saeed Khattak
Keyword(s):  
Liquid Fuel ◽  
Low Density Polyethylene ◽  
Low Density

Study on Dissolution of Low Density Polyethylene (LDPE)

2014 ◽  
Vol 695 ◽  
pp. 170-173 ◽  
Author(s):  
Syie Luing Wong ◽  
Norzita Ngadi ◽  
T.A.T. Abdullah
Keyword(s):  
Fossil Fuels ◽  
Continuous Process ◽  
The Body ◽  
Liquid Fuels ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Factor Study ◽  
Benzene Toluene ◽  
The Difference ◽  
Cracking Process

The world is currently facing the problem brought by plastic waste, as well as energy crisis. It is known that catalytic cracking of low density polyethylene (LDPE) waste can produce liquid fuels with similar properties to fossil fuels, hence serve as a solution to the problems mentioned. However, the problem of pipelines clogging by molten plastic feed during the cracking process has to be solved before the process can be up-scaled to continuous process. It was proposed that LDPE waste can be dissolved in suitable solvent before being catalytically cracked under suitable conditions. This study was done to investigate the behavior of virgin LDPE (in powder form) dissolved in several chosen solvents, namely benzene, toluene, chlorobenzene, isooctane, xylene and trichloroethylene, and compare the result with previous work. From the study, it was observed that LDPE samples could dissolve in benzene and toluene to a high extent. On the other hand, isooctane acted as a weak solvent towards LDPE powder. The difference of LDPE solubility in solvents was attributed to the surface area per unit mass of LDPE samples. Despite the superior property of benzene as solvent for LDPE, the safety factor study showed that toluene, xylene and trichloroethylene were more suitable to be used in LDPE dissolution. However, care should be taken to minimize possible effects of the solvents towards the body while using the solvents mentioned.

scholarly journals Plastic Pyrolisis of Low Density Polyethylene (LDPE) Using Bleaching Earth (BE) Catalyst Become Liquid Fuel

Al-Kimia ◽  
2020 ◽  
Vol 8 (1) ◽  
Author(s):  
Sri Widya Astuti Abidin ◽  
Nurmalasari Nurmalasari ◽  
Sumiati Sumiati ◽  
Ayu Ramadani
Keyword(s):  
Liquid Fuel ◽  
Bleaching Earth ◽  
Low Density Polyethylene ◽  
Low Density

scholarly journals Fractional Distillation Process Utilized to Produce Light Fractional Fuel from Low Density Polyethylene (LDPE) Waste Plastic

2012 ◽  
Vol 5 (1) ◽  
pp. 39-46 ◽  
Author(s):  
M. Sarker ◽  
M. M. Rashid ◽  
M. S. Rahman ◽  
M. Molla
Keyword(s):  
Thermal Degradation ◽  
Energy Content ◽  
Batch Process ◽  
High Energy ◽  
Hydrocarbon Fuels ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Waste Plastics ◽  
Fume Hood ◽  
Step Process

Plastics are not easily biodegradable; and because of these characteristics they can remain under landfill and water for a very long period of time. All over the world only 6% of waste plastics are recycled and the rest of all waste plastics are dumped into landfills. An experiment was conducted in a laboratory scale batch process under Labconco’s fume hood utilizing low density polyethylene (LDPE). The experiment was carried out to obtain a hydrocarbon fuel product utilizing thermal degradation. Many research studies have successfully demonstrated that waste plastics such as low density polyethylene (LDPE), high density polyethylene (HDPE), polypropylene (PP) and polystyrene (PS) can be converted to valuable liquid hydrocarbon fuels. For experimental purposes we used 500 gm of LDPE as raw materials. This particular experiment is a two step process; the first step process involves extracting hydrocarbon fuels as mixture of both short and long chain hydrocarbon compounds. During the second step the fuel obtained in the first process is refractionated by thermal degradation process utilizing a distillation column. This process yields a short hydrocarbon chain liquid fuel that has similar properties to gasoline grade fuels. Analysis of these fuels was conducted by Gas Chromatography and Mass Spectrometer (GC/MS), FT-IR Spectrum 100 and Differential Scanning Calorimeter (DSC). The results show that the produced fuels are good quality fuels with high energy content. ASTM test result indicates that fuel has low sulfur level (3.2 ppm) and the fuel hydrocarbon range shown by GC/MS analysis is C4-C10.

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