Solvent Feeding Modes and Operating Constraints

Mujtaba (1999) discussed two modes of solvent feeding for conventional BED processes. 

In this mode the solvent is charged in the reboiler with the feed mixture at the beginning of the process. As the reboiler has a limited capacity, it, therefore, limits the amount of feed mixture that can be processed. This increases the number of batches to be processed in a campaign mode operation. In this mode, finding the optimum feed charge to solvent ratio is an important factor to maximise the productivity. 

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