Numerical simulation for the steam gasification of single char particle

Simulation of a single char particle for the synthesis gas production is challenging task due to its complex chemical reactions coupled with the varying physicochemical properties during the gasification process. Steam gasification of a single char particle require the favourable conditions for the CO and H(2)enriched gas with minimum CO(2)formation. Here, non-linear partial differential equation for the unsteady state diffusion-controlled reaction of a gasification agent (steam) inside the non-catalytic porous spherical char particle is numerically solved by staggered grid finite volume method with suitable boundary conditions. The steam gasification is numerically solved for the variable size char particle of two different diameters, i.e. 5 and 10 mm between the temperature range of 1000-1300 K. Gasification process at high-steam partial pressure suggests high H(2)and CO concentration in the synthesis gases.