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Effects of the gas/solids distributor on the local and overall solids distribution in a downer reactor
Author(s) -
Lehner Peter,
Wirth KarlErnst
Publication year - 1999
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450770203
Subject(s) - distributor , materials science , flow (mathematics) , plug flow , total dissolved solids , mechanics , thermodynamics , environmental science , environmental engineering , physics
In the last few years, the downer has been proposed as a new reactor for gas/solids reactions. Compared to state‐of‐the‐art riser reactors, the cocurrent downflow of gas and solids should lead to a more uniform flow structure, close to plug flow. Experimental studies showed, that the gas/solids distributor at the top of the reactor is significantly influencing the flow pattern in a downer reactor. Local information about the solids concentration is indispensable for a thorough characterization of the flow structure in gas/solids flows. To obtain this information, x‐ray computed tomography has been used for the experimental investigations.