Taylor diffusion in tubular reactors



In order to estimate the effect of velocity profile and radial diffusion on conversion in tubular reactors the assumption of Taylor diffusion is adopted. This leads to equations which are simple, but because of the numerical instability of these equations they are approximated to by a cell model in order to obtain numerical results. It is shown that the cell model can be a very good approximation to the one dimensional diffusion equation. If the Taylor diffusion model is valid for systems involving chemical reaction and heat transfer it may be concluded that while there seem to be no gross effects in a tubular turbulent reactor there are differences in detail, such as maximum temperature at the hot spot, which may be important.