Thermodynamics of Gasification of Coal With Oxygen and Steam: Charts for Material and Enthalpy Balance Calculations

Thermodynamic charts and tabulations are presented for calculating conveniently the heat balance, and product-gas yield and composition for the gasification of coal with oxygen and steam, on the assumption that water-gas shift equilibrium is attained by the product gases. These charts are of general applicability for any rank of coal; they cover a wide range of operating conditions through the use of multiple parameters, and may be used for pressures as high as 30 atm. Examples are given to illustrate the use and versatility of the charts. Charts and numerical examples are also given for a typical high-volatile C bituminous coal to illustrate the uses of such charts for a specific coal.