Via temperature swing adsorption, a dual circulating fluidized bed reactor can capture CO2 through a continuous process, but controlling the temperature of the reactor at a large scale is difficult due to the non-linearity hydrodynamics and heat transfer in the scaled-up two-phase flow. In the present study, an energy-efficient design of a circulating fluidized bed reactor was investigated. A preliminary design based on numerical simulation was associated with poor heat transfer of single- and multi-tube reactors. To enhance the heat transfer performance, an innovative multi-tube reactor with junctions was proposed. The junctions improved mixing among the tubes and resolved the heat transfer imbalance between the tubes. The heat transfer coefficient of the multi-tube reactor with junctions was about 12 times larger than that of the multi-tube reactor without junctions. An experimental facility was constructed, and the reactor design was verified. Finally, thermal design analysis is performed to evaluate the design effectiveness in terms of the thermal performance of the reactor capable of continuous CO2 capture. The results showed that the multi-tube reactor with junctions has a large thermal margin and is thus a robust and flexible design applicable to thermochemical process.
|Publication status||Published - 2022 Apr 15|
Bibliographical noteFunding Information:
This work was supported by the Korea CCS R&D Center ( Korea CCS 2020 Project) grant funded by the Korea government Ministry of Science , ICT & Future Planning) in 2017 ( KCRC-2014M1A8A1049330 ). Also, this work was supported by the Human Resources Development program (No. 20204030200110 ) of the Korea Institute of Energy Technology Evaluation and Planning ( KETEP ) grant funded by the Korea government Ministry of Trade, Industry and Energy .
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All Science Journal Classification (ASJC) codes
- Civil and Structural Engineering
- Modelling and Simulation
- Renewable Energy, Sustainability and the Environment
- Building and Construction
- Fuel Technology
- Energy Engineering and Power Technology
- Mechanical Engineering
- Management, Monitoring, Policy and Law
- Industrial and Manufacturing Engineering
- Electrical and Electronic Engineering