Determination of flow-regime boundaries for cohesive particles Page: 4 of 53
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Task 4. Small-Scale Flow Tests
Task 5. Large-Scale Flow Tests
Task 6. Comparison of Model with Data and Preparation
of Final Report
This quarter, tests were conducted with a Laser-Doppler velocimeter
(LDV) with cohesive oil shale particles to determine the particle size
distribution simultaneously with the determination of the particle velocity in
a pipe at a superficial gas flow rate of 15 SCFM.
In addition, a cold-flow test unit was constructed and operated to
determine the best method of controlling the flow rate of cohesive solids
through a standpipe and slide valve. It was found that the cohesive solids
would not flow well unless aeration was pulsed into the standpipe immediately
above the slide valve. When aeration was pulsed into the standpipe, the
solids flow was steady and controllable. Capability to pulse the aeration
into the standpipe was then added to the 12-inch-diameter standpipe in the
large-scale test unit.
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Knowlton, T.M. & Findlay, J.G. Determination of flow-regime boundaries for cohesive particles, report, January 1, 1992; Chicago, Illinois. (https://digital.library.unt.edu/ark:/67531/metadc1093905/m1/4/: accessed April 17, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.