Name
Cold model study of a megawatt-scale chemical looping combustion unit
Date & Time
Tuesday, October 1, 2024, 11:20 AM - 11:40 AM
Description

The chemical looping combustion (CLC) stands out as a pivotal technology in the realm of carbon capture, utilization, and storage (CCUS). Presently, it is undergoing a transition from laboratory research to the engineering demonstration stage. A megawatt-scale CLC cold-model unit, interconnected by bottom return valve between two primary reactors, has been developed and constructed at Huazhong University of Science & Technology (HUST). The cold-model unit achieved a rational pressure distribution in continuous operation. Validation of the scaled-up CLC unit's engineering design methodology and CPFD simulation results has been conducted via cold model experiments. Utilizing quartz sand particles with two distinct sizes (130μm and 189μm) as bed materials, this study delved into the impact of key parameters, including fluidization gas velocity, initial bed inventory, and particle diameter, on the gas-solid two-phase fluid dynamics within the system. It was found that the solid fraction profile along the reactor and the solid circulation rate were affected by gas velocity and initial bed inventory. With the investigation on system pressure fluctuations under different operating conditions, the decay pattern of solid fraction within the reactor was explored. By injecting CO2 as a tracer gas on both sides of the bottom return valve, the gas crossover rate between two reactors was obtained. The results indicate that the atmospheres in two reactors are effectively isolated, ensuring the safety of the system operation. This lays the foundation for the establishment and operation of a hot state demonstration facility for chemical looping combustion.

Location Name
Max Bell 156
Full Address
Banff Centre for Arts and Creativity
107 Tunnel Mountain Dr
Banff AB T1L 1H5
Canada
Session Type
Oral Presentation
Abstract ID
1099