Question
Pure chlorobenzene is being used to recover pyridine from water (1000 kg/h, 40 wt% pyridine and 60 wt% water). a) A single stage mixer-settler system
Pure chlorobenzene is being used to recover pyridine from water (1000 kg/h, 40 wt% pyridine and 60 wt% water).
a) A single stage mixer-settler system has been proposed to achieve an outlet extract that is 22 wt% pyridine. Determine the outlet extract and raffinate compositions as well as the % of pyridine recovered and solvent flow rate.
b) For part (a), how would increasing the solvent flow rate change the outlet compositions? How would the % recovery change if solvent flow rate was increased? Explain without calculations.
c) The same feed from the original problem statement is instead sent to a countercurrent multi-stage extraction system. The goal raffinate composition is 3 wt% pyridine, and the extract composition is 22 wt% pyridine. Determine the amount of solvent required and the number of stages necessary. What is the extract flow rate?
PLEASE USE CHARTS TO EXPLAIN PART A
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