Separate effects of pressure and some other variables on char combustion under fixed bed conditions

摘要: Abstract The effects of pressure, oxygen partial flow rate, total gas rate and temperature on the combustion rates chars from three different coals were measured by means a small fixed bed, linked to high pressure thermobalance at initial sample temperatures 450–750 °C pressures 0.1–2.1 MPa. was estimated with help functions: time required for oxidation (tr), maximum Tsmax, mass loss (dm dt) max . results interpreted statistical models, using factor analysis combined least square method. This allowed determination separate influence each variable. These models indicated that increased strongly rate. char type also influenced effect weaker, weakest variables. data can be used when developing pressurized bed gasifiers combustors cycles.