Numerical study of heat and mass transfer in a plate methanol steam micro reformer with methanol catalytic combustor

Hsueh, Ching-Yi; Chu, Hsin-Sen; Yan, Wei‐Mon; Chen, Chiun-Hsun

doi:10.1016/j.ijhydene.2010.03.036

Cited by 38 publications

(13 citation statements)

References 40 publications

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“…In the recent years, several groups have started to apply computational fluid dynamics (CFD) to design flow distribution systems for microchannel reactors. Regarding the SRM, some examples can be found in the literature in which a single or low number of microchannel sheets have been considered [20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

CFD analysis of the effects of the flow distribution and heat losses on the steam reforming of methanol in catalytic (Pd/ZnO) microreactors

Uriz

Arzamendi

Diéguez

et al. 2014

Chemical Engineering Journal

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Section: Introductionmentioning

confidence: 99%

CFD analysis of the effects of the flow distribution and heat losses on the steam reforming of methanol in catalytic (Pd/ZnO) microreactors

Uriz

Arzamendi

Diéguez

et al. 2014

Chemical Engineering Journal

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“…The solar energy, methanol combustion and butane combustion used as the heat-supply mode for methanol steam reforming microreactor for hydrogen production had been investigated by some scholars [9][10][11][12][13] . For example, Gu et al designed and manufactured a small portable condenser collector to supply heat for the methanol reforming process for hydrogen production [9] .…”

Section: Introductionmentioning

confidence: 99%

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

Zheng

Zhou

et al. 2020

International Journal of Hydrogen Energy

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To replace the traditional electric heating mode and increase methanol steam reforming reaction performance in hydrogen production, methanol catalytic combustion was proposed as heat-supply mode of methanol steam reforming microreactor. Moreover, the methanol catalytic combustion microreactor and self-thermal methanol steam reforming microreactor for hydrogen production were developed. Furthermore, 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 △Tmax of C-type porous reaction support was decreased by 24.4℃ under 1.3 mL/min methanol injection rate. Moreover, methanol conversation and H2 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 ℃ 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.

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“…Email: comcjj@163.com Zhong et al, 2012), the heat-recirculating combustors (Belmont and Ellzey, 2014;Chen et al, 2013a;Deshpande and Kumar, 2013;Kurdyumov and Matalon, 2011;Rana et al, 2014;Shirsat and Gupta, 2013), and the catalytic micro-combustors to suppress radical depletion and to enhance the reaction (Federici et al, 2009;Federici and Vlachos, 2011;Hsueh et al, 2010;Hsueh et al, 2011;Wang et al, 2010). Many micro-combustor studies have investigated the variation of dimension, thermal conductivity, inlet velocity, equivalence ratio, etc.…”

Section: Introductionmentioning

confidence: 99%

EFFECT OF WALL THERMAL CONDUCTIVITY ON MICRO-SCALE COMBUSTION CHARACTERISTICS OF HYDROGEN-AIR MIXTURES WITH DETAILED CHEMICAL KINETIC MECHANISMS IN Pt/γ-Al2O3 CATALYTIC MICRO-COMBUSTORS

Chen¹,

Liu²,

Song³

2014

Frontiers in Heat and Mass Transfer

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To understand the effect of different thermal conductivities on catalytic combustion characteristics, effect of thermal conductivity on micro-combustion characteristics of hydrogen-air mixtures in Pt/γ-Al2O3 catalytic micro-combustors were investigated numerically with detailed chemical kinetics mechanisms. Three kinds of wall materials (100, 7.5, and 0.5 W/m·K) were selected to investigate the effect of heat conduction on the catalytic combustion. The simulation results indicate that the catalytic reaction restrains the gas phase reaction in Pt/γ-Al2O3 catalytic micro-combustors. The gas phase reaction restrained by Pt/γ-Al2O3 catalysts is sensitive to thermal boundary condition at the wall. For most conditions, the gas phase reaction cannot be ignored in Pt/γ-Al2O3 catalytic micro-combustors. For low thermal conductivity, the higher temperature gradient on the wall will promote the gas phase reaction shift upstream; high temperature gradient exists on the wall, and the hot spot can cause the material to melt or degrade the catalyst. Due to the gas phase reaction is ignited and sustained in micro-combustors by the heat from the catalytic reaction, the effect of thermal conductivity on micro-scale combustion characteristics is not as obvious as it is in micro-combustors without Pt/γ-Al2O3 catalysts.

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Numerical study of heat and mass transfer in a plate methanol steam micro reformer with methanol catalytic combustor

Cited by 38 publications

References 40 publications

CFD analysis of the effects of the flow distribution and heat losses on the steam reforming of methanol in catalytic (Pd/ZnO) microreactors

CFD analysis of the effects of the flow distribution and heat losses on the steam reforming of methanol in catalytic (Pd/ZnO) microreactors

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

EFFECT OF WALL THERMAL CONDUCTIVITY ON MICRO-SCALE COMBUSTION CHARACTERISTICS OF HYDROGEN-AIR MIXTURES WITH DETAILED CHEMICAL KINETIC MECHANISMS IN Pt/γ-Al2O3 CATALYTIC MICRO-COMBUSTORS

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