What is pyrolysis of plastic waste?
Pyrolysis is a common technique used to convert plastic waste into energy, in the form of solid, liquid and gaseous fuels. Pyrolysis is the thermal degradation of plastic waste at different temperatures (300–900°C), in the absence of oxygen, to produced liquid oil (Rehan et al., 2017).
What is pyrolysis process PDF?
Pyrolysis is an irreversible thermochemical treatment process of materials at elevated temperatures in an inert atmosphere. It is basically a carbonisation process where an organic material is decomposed to produce a solid residue with high (or higher) carbon content and some volatile products.
What are the products of plastic pyrolysis?
Products of plastic waste pyrolysis. The pyrolysis process transforms plastic waste into organic vapors, gases, char, wax and HCl by thermal decomposition in the absence of oxygen. Thus, the primary product of the plastic waste pyrolysis process is liquid oil, while gases, wax, char, and HCl are by-products.
What is the best catalyst for plastic pyrolysis?
From literature i studied that silica-alumina based catalyst is best for plastic pyrolysis.
What are the types of pyrolysis?
There are three types of pyrolysis: 1) conventional/slow pyrolysis, 2) fast pyrolysis, and 3) ultra-fast/flash pyrolysis.
What is pyrolysis method?
Pyrolysis is one of the technologies available to convert biomass to an intermediate liquid product that can be refined to drop-in hydrocarbon biofuels, oxygenated fuel additives and petrochemical replacements. Pyrolysis is the heating of an organic material, such as biomass, in the absence of oxygen.
Where is pyrolysis used?
Pyrolysis is considered the first step in the processes of gasification or combustion. The process is used heavily in the chemical industry, for example, to produce ethylene, many forms of carbon, and other chemicals from petroleum, coal, and even wood, to produce coke from coal.
What is pyrolysis process?
What is the composition of plastic waste?
The major composition was HDPE, LDPE, PP, and PET accounting for 57.4%, 17.4%, 7.3%, and 5.9% of total MPW, respectively. OTHER, PS, and PVC represented 5%, 4.8%, and 2.2%, respectively.
What does LDPE stand for?
Low-Density Polyethylene
About Low-Density Polyethylene (LDPE) | Plastics Make It Possible.
What is the function of ZSM-5?
ZSM-5 has been used as a support material for catalysis. In one such example, copper is deposited on the zeolite and a stream of ethanol is passed through at temperatures of 240 to 320 °C as a vapour stream, which causes the ethanol to oxidize to acetaldehyde; two hydrogens are lost by the ethanol as hydrogen gas.
What is pyrolysis technique?
Pyrolysis is a thermochemical treatment, which can be applied to any organic (carbon-based) product. It can be done on pure products as well as mixtures. In this treatment, material is exposed to high temperature, and in the absence of oxygen goes through chemical and physical separation into different molecules.