The steam methane reforming reaction in a plug-flow reactor simulated; Investigating the steam methane reforming reaction efficiency dependency on the mass flow rate of the gas in a plug-flow reactor with an uneven temperature profile.

Persoon, Djano (2024) The steam methane reforming reaction in a plug-flow reactor simulated; Investigating the steam methane reforming reaction efficiency dependency on the mass flow rate of the gas in a plug-flow reactor with an uneven temperature profile. Bachelor's Thesis, Physics.

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Abstract

In the investigation set out in this thesis, the steam methane reforming reaction in a plug-flow reactor was investigated through the use of computational methods. The goal of this investigation is to examine the dependence of the efficiency of an ideal reactor with an uneven temperature profile on the mass flow rate of the gas. For the simulations, the "gri30.yaml" reaction mechanism and the Cantera package in Python have been used. First, an ideal zero-dimensional constant-pressure reactor was simulated to evaluate the temperature dependency of the hydrogen production rate. Afterwards, using the temperature profile of real experimental data, a temperature fit using an error function was made, after which its upper limit was offset to realize a higher maximum temper- ature. This fit was used as the temperature profile of an external heat reservoir. This reservoir was connected to a plug-flow reactor using Cantera’s wall object, allowing heat transfer. Then the gas temperature, time step per unit length, hydrogen mole fraction and hydrogen production efficiency were plotted against the length of the reactor for a variety of mass flow rates. For the plug-flow reactor, it was observed that the deviation between the gas temperature and reservoir temperature increased as the mass flow rates increased. Both the lower temperature and decreased residence times resulted in an observed lower hydrogen mole fraction and lower production efficiency for higher mass flow rates.

Item Type:	Thesis (Bachelor's Thesis)
Supervisor name:	Mokhov, A.V. and Purushothaman Vellayani, A.
Degree programme:	Physics
Thesis type:	Bachelor's Thesis
Language:	English
Date Deposited:	09 Jul 2024 11:34
Last Modified:	09 Jul 2024 11:34
URI:	https://fse.studenttheses.ub.rug.nl/id/eprint/33074

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