Abstract
Experiments were carried out to study the residence time of fine particles in a 30-cm dia. laboratory fluidized bed. Fines, − 170 +230 mesh with an average size of 75 μm, were injected both radially and coaxially to simulate different fines recycle possibilities in an actual operating unit at two different bed heights and three different bed operating conditions. It was found that the transitory time of fines from the bed surface to the collecting cyclone dipleg and filter dominated the characteristic particle collection times. The experimental results were corrected for this transitory time to arrive at an estimate of the fines residence time in the bed. The true fines residence time in the bed is of the order of 10 to 20 s. However, the experimental uncertainties in the current experiments do not allow exact determination of the residence time distribution.
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.
