Abstract
An improved coal-burning technique, known as the Vortexing Fluidized Bed Combustion (VFBC), was recently proposed for small- and medium-scale space/water heating applications. In the development of this technique, stable layers of suspended particles produced by the swirling motion were observed in the freeboard under certain operating conditions. These suspension layers of circulating particles act as if they were iron particles caught in the magnetic field. The formation of the suspension layers can prolong the fuel (coal) particle residence time for complete combustion and reduced elutriation. If properly designed, the suspended sorbent particles may react with SO x for improved sulfur removal. This paper discusses the formation and characteristics of these suspension layers. Observation and measurements of gas flow field, particle size distribution, and particle mass flux distribution were made in the laboratory. Numerical modeling of gas/particle flows in VFBC freeboard confirms the existence of such suspension layers. The potential applications of the suspension layer in VFBC are also discussed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
