Hydrogen Production from Methane Steam Reforming in Combustion Heat Assisted Novel Microchannel Reactor with Catalytic Stacking

Abstract

In this study, we further investigate the application of an MCR containing a nickel metal catalyst with variable number of stacks for hydrogen production via MSR. Microchannels were contained in the MCR one side of the nickel metal catalyst with variable number of stacks for producing hydrogen to generate the necessary heat for the endothermic MSR and the combustion reaction was performed on the other side of the MCR. The catalyst used in this study for the MSR reaction, which was a prepared Pd[0.1]-Al[0.3]/Ni catalyst. The methane conversion and hydrogen production mole ratio were 94.7% and 9.39 mol h–1, respectively, and the steam/carbon (S/C) ratio was 3 at 650 °C, GHSV = 10 000 h–1. The promise of a feasible simplified system for hydrogen production from the MSR was confirmed. If a hydrogen separation membrane is placed between the MSR elements in an MCR, the forward reaction will be preferentially promoted by the rapid removal of the hydrogen produced through the MSR reaction.

Improved Performance of the Natural Gas Steam Reforming by Coupling with Internal Combustor and Target Heat Transfer in an Integrated Reactor

“…The simple concept is tubular reformer, − which mainly derives from industrial reformer for the SR reaction of NG. Different plate reactors are also developed due to their particular characters that the reactors could be easily scaled up by increasing the parallel plates. ,− Compared to these plate-type reformers, some researchers use the microchannel technology to furtherly strengthen the heat transfer efficiency between the different reactions. − In addition, some multilayered cylindrical reactors − are also investigated to improve hydrogen production efficiency.…”

Experimental performance evaluation of a combustion heat-assisted catalytic flat plate fuel reformer for fuel cell grade hydrogen

“…So, hydrogen must be extracted either from other natural resources through various means or could be produced on-board by reforming process [2][3][4][5][6][7][8][9][10][11][12][13][14][15]. As a viable alternative of carrying pure hydrogen and lack of hydrogen dispensing infrastructure, onboard hydrogen generation by reforming hydrocarbon fuels available in established nationwide refueling stations such as natural gas, gasoline, diesel, propane or alcohol-based bio-fuels would be an obvious choice [2][3][4][5][6][8][9][10][11][12][13][14][15][16][17]. The only issue of using reformate fuel into the PEMFC stack is to degradation of PEMFC stack performance due to poisoning of Pt catalyst, used in PEMFC, by the carbon 4 monoxide (CO) presence in the reformate fuel [1][2].…”

“…From the thermodynamics point of view, the high operational temperature makes it possible to improve the CO tolerance in HTPEMFC stack at a higher level [2,[18][19][20]. Hydrogen-rich reformate can be produced on-board by reforming process using hydrocarbon fuels available at the nationwide refueling stations [5][6][21][22][23][24][25][26][27][28][29]. However, the reformer should be highly efficient as well as compact in order to integrate the reformer on-board to feed the HTPEMFC systems.…”

Numerical Simulation of Hydrogen Production via Chemical Looping Reforming in Interconnected Fluidized Bed Reactor

“…1,2 Among these methods of hydrogen production, methane steam reforming on solid catalysts is a well-known industrial route. 3,4 However, the hydrogen production by means of methane steam reforming will lead to appreciable amounts of CO 2 released. Hence, developing a new technology for hydrogen production with lower cost and less CO 2 emission has become desirable.…”

“…Hydrogen is regarded as the most promising clean energy and plays a key role in the reduction of greenhouse gas emissions. The production of hydrogen has attracted great attention in recent years. , Among these methods of hydrogen production, methane steam reforming on solid catalysts is a well-known industrial route. , However, the hydrogen production by means of methane steam reforming will lead to appreciable amounts of CO 2 released. Hence, developing a new technology for hydrogen production with lower cost and less CO 2 emission has become desirable.…”