One-dimensional

heterogeneous model for transient state is used for simulating steady-state temperature profiles of adiabatic fixed-bed reactors. Since the length of the high-temperature zone is determined by the temperature profile

it is essential to investigate factors affecting temperature profile. This paper discusses the influences of heat conduction of the bed

of the gas and of the reactor wall. An example is given for making explanation clearer. Results show that for experimental reactors the effect of heat conduction through reactor wall is by no means negligible; therefore

this effect should be taken into account during reactor scale-up.