The porous media model was employed to conduct three-dimensional numerical simulation on a high pressure multi-component syngas heat exchanger designed by ASPEN software.The effect of different geometric structures on heat transfer and pressure drop of shell side fluid was investigated.The results showed that

the heat exchanger designed by the ASPEN software had good flow and heat transfer performance;the temperature distribution of the high pressure multi-component syngas at shell side obtained by the porous medium model agreed well with that designed by the ASPEN software;keeping the other parameters as constants and decreasing the segmental orifice degree of the baffle plate in heat exchanger from 20% to 15%had little effect on heat transfer behavior of the shell side fluid

but the pressure drop was increased.