Stripping process with fully distributed openings on baffles
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United States of America Patent
Stats
-
May 25, 2004
Grant Date -
Jan 24, 2002
app pub date -
Dec 21, 2000
filing date -
Dec 29, 1999
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A baffle-style stripper for an FCC process having a complete or nearly complete coverage of stripping openings over the sloped surface of the baffle will provide improved stripping efficiency and catalyst flux through the stripper. The complete distribution of relatively small openings over the entire surface of a sloped baffle has been found to interrupt relatively dense streamers of catalyst that were previously not known to exist and which short-circuited the contact of the stripping fluid with the catalyst. Spreading out the stripping gas across the sloped area of the baffle to a much greater extent than has been practiced in the past has now been found to promote active contacting of the catalyst with the stripping fluid over the entire volume of the stripper between the baffles.
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