Abstract:
The aim of research was to study the influence of the sand size and mass flow rate on the collection efficiency of a circulating granular moving bed gas filter and the pressure drop across the filter. In this research, the experimental were carried out in down draft gasifier which produces the producer gas from wood chip. The collection efficiency and pressure drop of a circulating granular moving bed filter were investigated at three filter media size of 0.300 - 0.600 0.600 - 1.160 and 1.160 - 2.360 mm, and three different filter media mass flow rate of 2 4 and 8 kg/min. The results showed that the pressure drop and the collection efficiency increased with the decrease of the mass flow rate and the size of the filter media. In addition, the maximum collection efficiency of the filter was 92.16% which occurred when applying the sand size and the mass flow rate of 0.300 - 0.600 mm and 2 kg/min, respectively, and the minimum
pressure drop across the filter was 46.61 N/m2 which occurred when applying the sand size and the mass flow rate of 1.160 - 2.360 mm and 8 kg/min, respectively.