ABSTRACT
Advantages of up-flow biomass gasifier (with CO gas as main combustible material) over down-flow type are lower output gas temperature, lower solid tar and dust contained in output gas, and no plugging problems in the system. In this study, the suitable control conditions of up-flow gasifier for rice husk were investigated by simulation method, and correlated the data with previous experimental results. Based on the results of simulation, the best performance condition for generating more power and energy was obtained when supplying air containing 174.1% of dry material weight and water containing 6.5% of dry material weight to the combustion layer. Under this condition, the optimum output gas temperature was 150 centigrade, and the output gas calorific value from the gasifier was 4,765 kJ/m3 (at 30 centigrade, 1 atm). In addition, a calorific value of 17,165 kJ/kg for liquid tar containing 33.2% material weight was also generated from the gasifier at the same condition.HomePage