Gasification is a process that converts carbonaceous materials, such as coal, petroleum, or biomass, into carbon monoxide and hydrogen by reacting the raw material at high temperatures with a controlled amount of oxygen. The resulting gas mixture is called synthesis gas or syngas and is itself a fuel. Gasification is a very efficient method for extracting energy from many different types of organic materials, and also has applications as a clean waste disposal technique
is, in contrast to degassing, the complete conversion of solid fuels into gaseous fuels In the gasification process air or steam or both together are blasted through glowing layers of the solid fuel that is being gasified (coke, lignite and coal), as a result of which carbon monoxide and hydrogen (H2) are formed
Incinerating waste (without air or open flame combustion) through vaporization, vapor destruction, and slow condensation of the off-gases as they slowly cool and pass through a secondary heating device
A method for exploiting poor-quality coal and thin coal seams by burning the coal in place to produce combustible gas that can be collected and burned to generate power or processed into chemicals and fuels
Waste treatment process where waste is heated to produce a combustible gas that can be burned in excess air to generate heat The process is not yet developed to a production stage
A multi-stage process for producing electricity from a fuel using both the expansion of gas in gas turbogenerators and expansion of steam in steam turbogenerators In this process, the fuel is first partially oxidized with air at elevated pressure, converting the fuel to a raw fuel gas In subsequent stages, the fuel gas is cleaned, and then first burned in a combustor and expanded in a gas turbine Finally, the turbine exhaust gases are used to raise steam in a steam boiler, which drives a steam generator
is the breakdown of waste materials using a combination of high heat (i e gasification) and combustion where the organic waste is combination of these two processes whereby pyrolysis, as the ‘front end’ process, is the thermal decomposition of organic material either in the absence of air or with a very small amount of air Pyrolysis generates three main products; char, oil (pyrolysis oil’) and gas These products vary depending on the composition of the waste materials fed into the pyrolysis reactor and process conditions (e g amount of oxygen) Gasification is the process whereby most of the char, tar and volatile gas resulting from pyrolysis are converted into a steam and a combustible gas (syngas) by a reaction with steam, with or without air