Crystallization with agglomeration (distributed CSD)

An MSMPR crystallizer solved with the rigorous distributed population balance (not just moments): the full crystal-size distribution is computed on a size grid, and an agglomeration (aggregation) kernel combines fine crystals into larger ones — coarsening the mass-weighted mean size (d43) and broadening the distribution (CV rises above the growth-only MSMPR value of ~1.0) while conserving mass exactly. The distribution, its coefficient of variation, and d43 propagate on the solid stream into the filter and dryer — the gPROMS/gCRYSTAL capability the moment model structurally cannot provide. Honesty note: the aggregation kernel is a caller-supplied screening value (no fabricated kinetics), and the first-order upwind size grid reproduces the analytic MSMPR mean to within ~3%.