These were low and high density polyethylene (ldpe and hdpe, respectively), polystyrene (ps), polyethylene terephalate (pet), polypropylene (pp) and polyvinyl chloride (pvc) the product yield for the mixture was given in terms of gas, char, oil and hcl (from pvc. Includes all other resins and multi materials (eg laminates) the two types of plastic most commonly recycled in queensland are pet (polyethylene terephthalate) and hdpe (high density polyethylene) pet is commonly used for soft drink packaging (the rocket bottom bottle) and hdpe is used to make plastic milk and detergent bottles. The thermal characteristics of a material are important to learn in order to know the thermal stability of the materials ethylene propylene diene monomer (epdm) is a synthetic rubber that is widely used in industry due to its resistance to aging, ozone, and chemicals. Recovery of hydrocarbon liquids from waste high density polyethylene by thermal pyrolysis 6brazilian journal of chemical engineering vol 28, no 04, pp 659 - 667, october - december, 2011 tga curve of waste hdpe dtg curve of waste hdpe effect of temperature on product distribution the pyrolysis of hdpe yielded four different products, ie.
A process of using fast pyrolysis in a carrier gas to convert a plastic waste feedstream having a mixed polymeric composition in a manner such that pyrolysis of a. Executive summary formation of wax/oil from the batch pyrolysis of high density polyethylene and polypropylene wastes and resins roces, susan a, chan, david c, yap, kenny m, yeung, evan w. Batch pyrolysis of high density polyethylene and polypropylene has been performed in a quartz reactor to obtain waxy products experiments were carried out in temperatures 500, 550 & 600°c with varying sample sizes.
The organic layer from the catalytic pyrolysis remained homogeneous while that from the non-catalytic pyrolysis split into a hazy aqueous layer (with suspended oil droplets) sandwiched between a thin organic layer on top and a thicker organic layer at the bottom. A process of using fast pyrolysis in a carrier gas to convert a plastic waste feed stream comprising nylon 6 and a polyolefin or mixtures of polyolefins having a mixed polymeric composition in a manner such that pyrolysis of a given nylon 6 and a polyolefin or mixtures of polyolefins and its high value monomeric constituent or derived high. Stephanie r kinnon is a vancouver-based freelance writer her work has appeared in reader's digest, chatelaine magazine, her sports, northwest runner, the georgia straight, business in vancouver, and impact magazine.
Factors of inﬂuence effect chemical composition of the resins pyrolysis temperature and heating rate pyrolysis time the primary pyrolysis products relate directly to the chemical structure and composition of the resin. Pinto et al (1999) distilled pyrolysis oil from ps, polypropylene (pp), and polyethylene (pe), and their mixtures, and found that the distillation curves of the oil lie between standard gasoline and gas oil curves this likely indicates a similarity in oil composition between plastic pyrolysis oil and standard fuels. The wastes were heated using a semi-batch reactor for six to seven hours at 300-400 degree celsius temperature range in which the plastic turned to plastic-derived oil and stayed in its oil state low density polyethylene (ldpe), high density polyethylene (hdpe) and polypropylene (pp) are three most common polyolefin profusely used as packaging. Plastic materials have been extensively consumed by various industry sectors including packaging, household, construction, automobile, aerospace, and electronic  owing to their advantageous properties, such as light weight, good strength and durability, resistance to corrosion, excellent thermal and electrical insulation, versatility and low production costs.
The conversion of waste plastics into fuel oil by thermal depolymerization (also called pyrolysis or cracking) involves using moderate heat in the absence or oxygen to break down the long-chain hydrocarbons into short-chain hydrocarbon gases and oil. These were high-density polyethylene (hdpe), low-density polyethylene (ldpe), polystyrene (ps), polypropylene (pp), polyethylene terephthalate (pet) and polyvinylchloride (pvc) the heating rate used was 25 c min−1 to a final temperature of 700 c. Factors of inﬂuence effect chemical composition of the resins pyrolysis temperature and heating rate pyrolysis time the primary pyrolysis products relate directly to the chemical structure and composition of the resin2 which466 x heating rate: 30 °c/min.
Very high while the ash content is considered low these character-istics indicate that plastics have high potential to produce large amount of liquid oil through pyrolysis process. Oil yields from polystyrene (ps) but decreased oil yields from high-density polyethylene (hdpe), when compared to the crackings in solvent-free environment significant oil.
In the case of food packaging, low-density polyethylene and high-density polyethylene are used depending on the desired characteristics, any level of density in between can be made to best satisfy product needs. Catalytic and thermal degradation of high-density polyethylene in vacuum gas oil over non-acidic and acidic catalysts more by jale yanik in this study, the conversion of hdpe in vgo to fuels was carried out in absence and presence of catalyst. The plastic fraction of municipal solid waste comprises 60% polyolefins (pos) like high density polyethylene, low density polyethylene and polypropylene, which is desirable from a ptl standpoint since they are the most suitable plastic candidates for quality liquid fuel production.