(684e) Particle-Resolved Fixed-Bed CFD for Methanol Oxidation to Formaldehyde
AIChE Annual Meeting
2020
2020 Virtual AIChE Annual Meeting
Catalysis and Reaction Engineering Division
Multi-Scale Modeling
Thursday, November 19, 2020 - 9:00am to 9:15am
It was shown that combustion was favored at lower temperatures. Therefore, formaldehyde mass fraction increased along the tube while inside of the upstream particles (closer to the inlet) formaldehyde concentration decreased. It was also observed that when the oxygen mass fraction approached zero inside the particles the overall reaction rate became zero. However, in the regions where methanol concentration became very low but oxygen and formaldehyde were present, combustion sped up. These observations can be used to guide operation of the reactor to improve selectivity. The advantages and drawbacks of rings compared to other particle shapes are discussed.
References
- Deshmukh SARK, van Sint Annaland M, Kuipers JAM. Kinetics of the partial oxidation of methanol over a Fe-Mo catalyst. Appl. Catal A Gen. 2005;289:240â255.
- Dixon AG, Taskin ME, Nijemeisland M, Stitt EH, CFD method to couple three-dimensional transport and reaction inside catalyst particles to the fixed bed flow field. Ind. Eng. Chem. Res. 2010;49:9012-9025.
- Partopour B; Dixon AG, An integrated workflow for resolved-particle packed bed models with complex particle shapes. Powder Tech. 2017;322:258-272.
Checkout
This paper has an Extended Abstract file available; you must purchase the conference proceedings to access it.
Do you already own this?
Log In for instructions on accessing this content.
Pricing
Individuals
AIChE Pro Members | $150.00 |
AIChE Emeritus Members | $105.00 |
AIChE Graduate Student Members | Free |
AIChE Undergraduate Student Members | Free |
AIChE Explorer Members | $225.00 |
Non-Members | $225.00 |