EXPERIMENTAL INVESTIGATIONS ON VARIATION IN PARTICLE SIZE ON PRESSURE DROP DURING GAS FLUIDIZATION OF SOLIDS IN STATIONARY LIQUID

For investigating the effect due to the variation in particle size on pressure drop across the column in gas fluidization of solids in stationary liquid has been done by conducting experiments. The investigations have been performed on three different particle sizes of coal in three different pools of liquids at various flow rates. The experimentations have been conducted using three different liquids which are taken as water, kerosene and turpentine. The air flow rate is measured by the air rotameter. For different air flow rates, corresponding column pressure drop, have been measured across the fluidized bed for three different sizes of solids. For the purpose of experimentation, an experimental set-up has been fabricated. The standardization of the experimental setup and the methodology of experimentation have been finalized by applying the gauge repeatability and reproducibility theory. The fluidization is done in a fluidizing column. The results indicate that the column pressure drops decreases with increase in particle size.