Abstract
AbstractAn efficient computational scheme has been established for obtaining the molecular‐weight distributions (MWDs) for Nylon 6 polymerization in homogeneous, continuous‐flow stirred‐tank reactors (HCSTRs) with water vaporization. A three‐step procedure is used: the moment equations are solved by a sequential application of Brown's algorithm, the moments so calculated are used to give an empirical Flory‐Schultz distribution and, finally, this empirical distribution is used as a starting guess in Brown's algorithm applied to species mass‐balance equations to give the exact MWD. The moment‐closure approximations normally used for hutch reactors have been found to work equally well with HCSTRs for residence times of industrial significance.
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