Methanol Reforming Process based on Langmuir–Hinshelwood Mechanism

Reference: Design of a methanol reformer for on-board production of hydrogen as fuel for a 3 kW HighTemperature Proton Exchange Membrane Fuel Cell power system

https://doi.org/10.1016/ j.ijhydene.2020.08.179
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Methanol Steam Reforming (MSR) and Water–Gas Shift (WGS) processes are important reactions in clean hydrogen production, especially in small capacity Fuel Cell systems. However, these reactions have complex mechanisms, strongly dependent on temperature, pressure and adsorption-desorption phenomena on the catalyst surface.

The reaction models available in ANSYS Fluent (Arrhenius 1-step or multi-step) do not fully describe the behavior of the Langmuir–Hinshelwood mechanism.

MSR–WGS–MD kinetics in Langmuir–Hinshelwood form:

Some results:

• Temperature distribution along the reformer

• Mass fraction distributions of Hydrogen

• Mass fraction distributions of Carbon dioxide

• Mass fraction distributions of Carbon monoxide