Multiphase flow simulations of a moving fluidized bed regenerator in a carbon capture unit
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, and Morgantown, WV (United States)
To accelerate the commercialization and deployment of carbon capture technologies, computational fluid dynamics (CFD)-based tools may be used to model and analyze the performance of carbon capture devices. This work presents multiphase CFD-based flow simulations for the regeneration device responsible for extracting CO2 from CO2-loaded sorbent particles before the particles are recycled. The use of solid particle sorbents in this design is a departure from previously reported systems, where aqueous sorbents are employed. Another new feature is the inclusion of a series of perforated plates along the regenerator height. The influence of these plates on sorbent distribution is examined for varying sorbent holdup, fluidizing gas velocity, and particle size. The residence time distribution of sorbents is also measured to classify the low regime as plug flow or well-mixed flow. The purpose of this work is to better understand the sorbent flow characteristics before reaction kinetics of CO2 desorption can be implemented.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1167636
- Report Number(s):
- PNNL-SA-91136; AA9010100
- Journal Information:
- Powder Technology, Vol. 265; ISSN 0032-5910
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
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