Simulation of Transport Phenomena in Bubble Column Reactors
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Eidgenoessische Technische Hochschule (ETH), Zurich (Switzerland); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Shell International Exploration and Product Inc., Houston, TX (United States)
The production of carbon and hydrogen from methane is a viable pathway for monetizing the vast reserves of US natural gas. Liquid (metals and/or salts) bubble column reactors operating at temperatures greater than 1000°C allow the conversion of methane into hydrogen without CO2 emission. The low-density carbon floats on top of the liquid surface, allowing an easier removal, compared to other reactor concepts for methane pyrolysis. In this current report, we present results from simulations of transport phenomena in a liquid bubble column reactor. The goal is to investigate and understand parameters that are crucial for bubble column reactor design and scale up. The report presents the formulation and numerical methods used in the multiphase direct numerical simulation software, Quilt. This software was validated for the bubbly flow using numerical and physics based test problems. Quilt was then used to perform simulations of the bubble column reactor as a parametric study, varying the bubble injection parameters. The simulations were visualized for qualitative analysis and followed up with a quantitative analysis. The effect of injection parameters on various quantitative measures of the bubble residence time, interfacial area and motion through the column are presented.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Hydrogen Fuel Cell Technologies Office (HFTO)
- DOE Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1894210
- Report Number(s):
- ORNL/TM-2021/2318; NFE-19-07532
- Country of Publication:
- United States
- Language:
- English
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