Based on a theoretical analysis for the heat transport of nylon 6 melt in a tube reactor (VK column)

various charts of radial temperature distribution and heat graphs in connection with three typical flow profiles are presented in this paper. For plug flow

the residence time of the fluid in the reactor is uniform. However

plug flow does not demonstrate significant superi-ority over others in terms of radial temperature difference. Therefore

a good baffle must have the best radial mixing and the minimum axial mixing effect

so as to insure uniformity for both physical properties across a section and residence time of fluid through VK column. The radial temperature distribution and heat graph in this work can reflect this combined effect to some extent. Results show that the radial temperature differences will increase greatly with scaling-up.