A Brief Discussion on Pyrolysis

Pyrolysis gasoline or Pygas is defined as a naphtha-range product that consists of a high aromatics content. It is a by-product of high temperature naphtha cracking during ethylene and propylene production. Furthermore, it is a high octane number mixture which comprises aromatics, olefins and paraffins varying from C5s to C12s. It is the thermal dilapidation of biomass by heat in the lack of oxygen and produces charcoal (solid), bio-oil (liquid), and fuel gases. Pyrolysis gas consists of a substantial amount of carbon dioxide, along with methane, may be utilized as a fuel for industrial combustion. 

Pyrolysis is described as a process of chemically disintegrating organic materials at high temperatures in the absence of oxygen. The process generally occurs at temperatures above 430 °C (800 °F) and under pressure. It concurrently includes an alteration of physical phase and chemical composition and is a permanent process. The word pyrolysis is derived from the Greek words "pyro" which stands for fire and "lysis" which means splitting. Pyrolysis is the thermal dilapidation of plastic waste at various temperatures.

Pyrolysis is generally taken in use to transform organic materials into a solid residue consisting of ash and carbon, little quantities of liquid and gases. Extreme pyrolysis, on the other hand, gives carbon as the residue and the process is known as carbonization. In contrast to other high-temperature processes such as- hydrolysis and combustion, pyrolysis does not implicate reaction with water, oxygen or other substances. Though, as it is not possible to get an oxygen- free environment, a little amount of oxidation will always take place in every pyrolysis system.