Energy-efficient design of dual circulating fluidized bed system for CCUS by multi-tube configuration with junctions

Seungyeong Choi, Maroosol Yun, Kiwoong Kim, Yong-Ki Park and Hyung Hee Cho

Energy, 2022, vol. 245, issue C

Abstract: 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.

Keywords: CO2 capture; Dual circulating fluidized bed; Multi-tube reactor; Heat transfer in gas-solid flow; Thermal-fluid design (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S036054422200161X
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:245:y:2022:i:c:s036054422200161x

DOI: 10.1016/j.energy.2022.123258

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().