Figure 11. On line images of crystal nucleation, growth
procedure in 10 L crystallizer and the terminal crystal products of
different MACC and conventional cooling crystallization (with seed and
no seed).
It was notable that all the MACC experiments were scaled up from 100 mL
crystallizer to 2 L crystallizer then to 10 L crystallizer and had been
repeated for more than ten times parallelly to indicate the stable
nucleation and auto-seeding performance of the membrane module. In
addition, the PTFE and PES hollow fiber membrane module utilized for
MACC test had both be reused for more than one hundred times with stable
performance, which is benefited by the excellent mechanical stability
and chemical resistance of the chosen polymeric materials.