Solid Recirculation Rate

Figure 5-6 illustrates the residence time of the agglomerate as a function of the solid recirculation rate: in the shed zone [

b)], in the below the shed zone per loop [ per loop [Figure 5-6-d)].

a)

c)

Figure 5-6. a) Residence time of the agglomerate in the shed zone as a function of the solid recirculation rate. b) Residence time of the agglomerate in the vicinity of the shed as a function of the solid recirculation rate. c) Residence time of the agglomerate

shed as a function of the solid recirculation rate. And, d) Residence time of the agglomerate above the shed

95% Confidence Interval, the error bars are very small to appear)

Finally the velocity plot arrow in Figure 5-5 gives an insight of the local velocities around the shed. As expected, the local characteristic velocities around the shed zone increases with an increment of the fluidization gas velocity. This means that the fragmentation probability increases as more air is coming through.

Solid Recirculation Rate

illustrates the residence time of the agglomerate as a function of the ulation rate: in the shed zone [Figure 5-6-a)], in the shed vicinity [

e below the shed zone per loop [Figure 5-6-c)] and in the above the shed zone

b)

d)

a) Residence time of the agglomerate in the shed zone as a function of the solid recirculation rate. b) Residence time of the agglomerate in the vicinity of the shed as a function of the solid recirculation rate. c) Residence time of the agglomerate

as a function of the solid recirculation rate. And, d) Residence time of the shed zone as a function of the fluidization gas velocity. (With a 95% Confidence Interval, the error bars are very small to appear)

gives an insight of the local velocities s around the shed zone increases with an increment of the fluidization gas velocity. This means that the

illustrates the residence time of the agglomerate as a function of the ], in the shed vicinity [Figure 5-6-

e above the shed zone

a) Residence time of the agglomerate in the shed zone as a function of the solid recirculation rate. b) Residence time of the agglomerate in the vicinity of the shed as a function of the solid recirculation rate. c) Residence time of the agglomerate below as a function of the solid recirculation rate. And, d) Residence time of the as a function of the fluidization gas velocity. (With a

The residence time as a function of the solid recirculation rate has an enormous effect on the time that the agglomerates spend in the undesirable zones and above the shed. For all cases, a considerable increase in the residence time per loop can be

as the solid recirculation rates are percentage of time graph (

As with the fluidizatio

distinctive zones are better appreciated by plotting them in a time percentage as a function of the solid recirculation rate, as presented in

Figure 5-7. Percentage of time of the agglomerate in the four distinctive of the fluidized

bed plus the differential pressure of the shed zone rate.

The magnitudes of the local characteristic velocities around the sheds as a function of the solid recirculation rate are presented in

The residence time as a function of the solid recirculation rate has an enormous the time that the agglomerates spend in the undesirable zones and above the shed. For all cases, a considerable increase in the residence time per loop can be

as the solid recirculation rates are decreased. This tendency is also observed in the percentage of time graph (Figure 5-7).

As with the fluidization gas velocity results, the residence time for the four distinctive zones are better appreciated by plotting them in a time percentage as a function of the solid recirculation rate, as presented in Figure 5-7.

Percentage of time of the agglomerate in the four distinctive of the fluidized bed plus the differential pressure of the shed zone as a function of the solid recirculation

The magnitudes of the local characteristic velocities around the sheds as a function of the solid recirculation rate are presented in Figure 5-8.

The residence time as a function of the solid recirculation rate has an enormous the time that the agglomerates spend in the undesirable zones and above the shed. For all cases, a considerable increase in the residence time per loop can be achieved . This tendency is also observed in the

n gas velocity results, the residence time for the four distinctive zones are better appreciated by plotting them in a time percentage as a

Percentage of time of the agglomerate in the four distinctive of the fluidized as a function of the solid recirculation

Figure 5-8. Velocity plot arrow in the shed zone as a function of the solid recirculation

rate.

Figure 5-9. Velocity plot arrow for polar coordinates in the entire measurement zone.

It can be noticed that there is not a clear tendency from

Figure 5-8. This strange behavior can be explained if we take into account the entire velocity vector of the agglomerate as presented in

Velocity plot arrow in the shed zone as a function of the solid recirculation

Velocity plot arrow for polar coordinates in the entire measurement zone. that there is not a clear tendency from the velocity plot arrow in . This strange behavior can be explained if we take into account the entire velocity vector of the agglomerate as presented in Figure 5-9 where it can be appreciated Velocity plot arrow in the shed zone as a function of the solid recirculation

Velocity plot arrow for polar coordinates in the entire measurement zone. the velocity plot arrow in . This strange behavior can be explained if we take into account the entire where it can be appreciated

that the local average velocities slightly increases as the solid recirculation rate is reduced. This means that the fragmentation probability increases as

movement of the agglomer

For example, a clog in the line going into the burner would increase the degree of fouling of the sheds in the stripper section of the Fluid Coker.