Break
Southwest Process Technology Conference
2018
10th AIChE Southwest Process Technology Conference
Southwest Process Technology Conference
Thermodynamics & Process Simulation
Tuesday, October 9, 2018 - 3:00pm to 3:30pm
The scale-down strategy focuses on a, first of kind, multiscale model to enable predictive capability in a moving bed purge bin. The phenomenological components of the model are developed based on âscaling downâ the commercial unit (e.g. understanding the key technical issues). These components are modeled in a transient manner (not just simulated at steady state) in the gPROMS software platform. After comparing with the literature data, a sensitivity study will be presented to understand the effects of operating parameters such as purging dimensions, temperature, pressure, purge gas flow rate and composition, purging gas injection locations, on the purging performance. As the model is transient, it can use non-steady state experiments, which are ideal for determining mass transfer rates. Hydrodynamic effects were shown to have a large effect on purging performance. Analysis of various fluid solids interactions as well as the gas/solids residence time distributions will also be discussed.