Hydrogen production by steam reforming of methanol in reactor with comby micro-channel network

For methanol steam reforming process in a micro-channel reactor,a steady-state multi-component three-dimension transport-reaction model was established.The catalytic process over Zn_Cr/CeO2/ZrO2 taken place in rectangular parallel micro-channels and in comby fractal micro-channel network was simulated numerically,and the effect of operating condition on reaction performance was investigated.The results indicated that the use of these micro-channels can make methanol conversion and hydrogen yield increase.Meanwhile,compared with rectangular parallel micro-channels,comby micro-channel network is of several advantages:much smaller requirement for pump power,adsorbing more heat under the same heating area and producing more uniform distribution of temperature.So,methanol conversion can be enhanced and CO reduced,which improve quality of hydrogen production.