Cryogenic condensation is an attractive option for controlling VOC emissions. Cryogenic condensation can offer lower operational costs than conventional abatement technologies like thermal oxidation and adsorption. At the low temperatures (ca. -100 degrees C) used in cryogenic condensation, many high melting point VOCs will freeze or desublimate. A fine particulate solid could form under the temperature gradients inside the condenser, becoming entrained in the gas phase on exit. This paper reports results in modelling the process using CFD. In this paper we present an inert DPM model in 3D and a dynamic DPM model in 2D to investigate this problem through CFD. The 3D results demonstrate particles must grow beyond a certain size to prevent entrainment in the outlet gas flow. These sizes are: 12 mu m at 150 Nm(3)/h (Stk(99%) = 0.18 at Re-dh, = 4600); 16 mu m at 100 Nm(3)/h (Stk(99%) = 0.22 at Re-dh = 3000); 23 mu m at 50 Nm(3)/h (Stk(99%) = 0.23 at Re-dh = 1500). The 2D results demonstrate a DPM model (Eulerian-Lagrangian model) of nucleation and growth of particles during cryogenic condensation. (C) 2019 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.