ABSTRACT
Gasification offers more scope for recovering products from waste than incineration. Coal gasification plants are cleaner with respect to standard pulverized coal combustion facilities, producing fewer sulfur and nitrogen byproducts, which contribute to smog and acid rain. Gasification of a carbonaceous material in an atmosphere of carbon dioxide can be divided into two stages: pyrolysis and gasification of the pyrolytic char. The gasification of refinery feedstocks and other carbonaceous feedstocks has been used for many years to convert organic solids and liquids into useful gaseous, liquid, and cleaner solid fuels. The gasification of coal, biomass, crude oil, or any carbonaceous residues is generally aimed to feedstock conversion to gaseous products. The gasification of a carbonaceous feedstock is the conversion of the feedstock to produce gaseous products that are combustible as well as a wide range of chemical products from synthesis gas. The future depends very much on the effect of gasification processes on the surrounding environment.
