The overall influence of tunnels on the flue gas flow in a steam methane reformer has been modeled and documented, and the concept that running a reformer without tunnels can decrease overall efficiency is well understood in the industry.
Blasch recently completed a CFD study and published its findings in the July/August edition of Nitrogen + Syngas Magazine. The study focuses on the effects of operating a reformer after removing just a single tunnel, leaving the rest in place. The resultant flue gas flow field is analyzed looking at temperature profiles, residence time distribution, areas of re-circulation, and predictive conversion effectiveness.
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