Structural design of self-thermal methanol steam reforming microreactor with porous combustion reaction support for hydrogen production

摘要

To replace the traditional electric heating mode and increase methanol steam reforming reaction performance in hydrogen production, methanol catalytic combustion was pro-posed as heat-supply mode for methanol steam reforming microreactor. In this study, the methanol catalytic combustion microreactor and self-thermal methanol steam reforming microreactor for hydrogen production were developed. Furthermore, the catalytic combustion reaction supports with different structures were designed. It was found that the developed self-thermal methanol steam reforming microreactor had better reaction performance. Compared with A-type, the Delta T-max of C-type porous reaction support was decreased by 24.4 degrees C under 1.3 mL/min methanol injection rate. Moreover, methanol conversion and H-2 flow rate of the self-thermal methanol steam reforming microreactor with C-type porous reaction support were increased by 15.2% under 10 mL/h methanol-water mixture injection rate and 340 degrees C self-thermal temperature. Meanwhile, the CO selectivity was decreased by 4.1%. This work provides a new structural design of the self-thermal methanol steam reforming microreactor for hydrogen production for the fuel cell. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.