(83e) Characterising the Pulsatile Structure of the Gas Flow in Fluidised Dense Phase Pneumatic Conveying of Cement Meal
AIChE Spring Meeting and Global Congress on Process Safety
2006
2006 Spring Meeting & 2nd Global Congress on Process Safety
Fifth World Congress on Particle Technology
Pneumatic Conveying Systems - I
Tuesday, April 25, 2006 - 9:20am to 9:40am
Flow visualisation utilising high speed photography has shown pulsatile flow behaviour of cement meal during fluidised dense phase (partially filled pipe) pneumatic conveying. During each individual pulsatile event (or transient), an impulse has been observed which is characterised by a sudden increase in material velocity and bed height, which subsequently decays to lower material velocity and bed height. Observation of the material impulse also indicates that the conveying gas aerates the material and is associated with fluctuations in gas pressure. This paper is focussed on the structure of the pulsatile behaviour of the gas fluctuations and the relationship of this structure with different conveying conditions.
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