Scan of Regenerator
 Benefits
of Regenerator TRACERCO Diagnostics™ Tower Scan/TRACERCO Diagnostics™ Tower Scan
- Identify problem cyclones
- Determine if bed levels are uneven which could indicate air grid
maldistribution
- Identify the dense and dilute phase catalyst levels
- Assist in the calibration of level control instruments
Tracerco uses two variations of the scanning technique to measure the
Regenerator catalyst level. A TRACERCO Diagnostics™ Tower Scan (single scan) through the
Regenerator will produce a density profile at the catalyst bed level area
that will indicate dense and dilute phase positions. This procedure can
be performed over varying operational conditions to assess the changes
in level and can assist in the calibration of level control instruments.
A Tracerco TRACERCO Diagnostics™ Tower Scan will offer more detailed indication on
a Regenerator’s catalyst bed level. In a TRACERCO Diagnostics™ Tower Scan four
scans are performed in an orthogonal grid pattern. The scan lines do not
necessarily have to remain parallel in order to miss the internal diplegs,
but they must be of the same chord length to ensure consistent comparable
dense bed and dilute phase densities between the four quadrants.
When overlaying the four scans traversing different quadrants of the
Regenerator, Tracerco can not only identify the dense and dilute phase
catalyst levels, but also determine if the bed levels are uneven, which
could indicate air grid maldistribution. Too high a dense bed level (or
less disengagement height), or too high a catalyst density at the primary
cyclone inlet elevation may overload the cyclones and result in excessive
catalyst loss.
As with Reactor cyclones, a TRACERCO Diagnostics™ Tower Scan can be performed on each Regenerator
cyclone to search for high catalyst levels in diplegs or plugged cyclones
that will explain high catalyst loss. These results provide confirmation
of the problem cyclone so that critical operating decisions can be made.
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