2with some methane which is a synthetic gas known as Syngas. All rights reserved. while gasification is useful for heat production, production of electricity, etc. 3. It breaks down the chemical bonds of the material. In addition, there are some other components such as water vapour, carbon dioxide, tar vapour, ash, etc. * Pyrolysis is thermal decomposition of any material in which the material convert in form of gas ( biogas) , liquid( tar), solid (charcoal). An indirect source of heat is used. [3] The typical temperature range for combustion and gasification is 800 to 1200 degrees and for pyrolysis 350 to 600 degrees. Another benefit of gasification is that it outputs two usable materials. Introduction to Pyrolysis | Advantages,Classification, Modes Of Pyrolysis Pyrolysis • The word Pyrolysis is derived from Greek words – Pyr: Fire – Lysis: ... • It is always also the first step in combustion and gasification processes where it is followed by total or partial oxidation of the primary products. Pyrolysis is the application of heat to raw biomass, in an absence of air, so as to break it down into charcoal and various tar gasses and liquids. Overview and Key Difference Pyrolysis is the process of thermal conversion of organic matter using a catalyst in the absence of oxygen. Summary – Incineration vs Pyrolysis. The biomass breaks down into a combination of solids, liquids and gasses. Pyrolysis and gasification are two important processes that are used to decompose materials. Compare the Difference Between Similar Terms. Steam may also be added to the gasifier to convert the carbon to syngas. (2) Pyrolysis-oil gasification occurs instantaneously, and the volatile products formed mainly consist of H 2, CO, CO 2, CH 4, H 2 S, NH 3, and H 2 O molecules. Gasification Gasification is a thermo-chemical reaction with the following distinct stages: Drying Pyrolysis Char combustion Performed at sub-stoichiometric oxygen concentrations and pressure (low or high) Produces CO and H 2 with some methane which is a synthetic gas known as Syngas The main difference is that gasification is achieved with a reduction of oxygen, whereas Pyrolysis is the process of sublimating organic matter in the absence of oxygen. The pyrolysis process can be self-sustained, as combustion of the syngas and a portion of bio-oil or bio-char can provide all the necessary energy to drive the reaction. Combustion is an exothermic chemical reaction; the combustion of a fuel can form light and heat as forms of energy.Pyrolysis is a decomposition reaction; here, organic materials are decomposed when provided with heat. What is Gasification Here, the materials decompose in an environment where a little amount of oxygen present. Combustion: It is an exothermic reaction in which fuel is burnt generally in the presence of atmospheric air or sometimes only by oxygen alone. Pyrolysis typically occurs under pressure and at operating temperatures above 430ºC (800ºF).Pyrolysis produces char, pyrolysis oil, and syngas, all of which can be used as fuels. There are key differences between Pyrolysis and Gasification. [3] Gasification occurs at lower temperatures than combustion. Why is Gasification better than Incineration? The main difference is that gasification is achieved with a reduction of oxygen, whereas Pyrolysis is the process of sublimating organic matter in the absence of oxygen. 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