Page 134 - Applied Process Design For Chemical And Petrochemical Plants Volume II

Distillation 1 23

Table 8-12
General Listing and Comparison of the Major Contacting Trays+

Efficiency Pressure Operating
Tray Manufacturer Capacity Turn4own Drop Flexibility
. .. . ~ ~ . .~
Bubble Cap Several Med. to 60% Good low High Good
Figures 8-63, 64, 66 flows, exceeds Valve Tray
Sieve Several High High/Limi ted Medium Medium
Figures 867A, 67C, 68B
Sieve Linde High High/Medium Low Good/Medium
Dual Flow* Shell Dev. High High/Medium Low Low
Figure 868A
Float Valve Nutter High High/High Medium Good
Figures 8-69A, 69B
Fixed V-Grid Nutter out High/High Medium Good
Figure 8-70 performs
Sieve Tray
MVG Tray Nutter High High/4l Medium Good
Figures 87 I.A, 71B >by 15-/ratio
30 %
Flexitray Koch Higher Wide range Low Good
Type A Figure 8-72 than Sieve
valve lift Tray. Lower
w/srp edge entrain
orifice, round than Sieve
Flexitray Koch Ditto above Ditto above Ditto above
Type A w/
contoured hole
Figure 8-73B
Flexitray Koch Ditto above Ditto above Ditto above
Type T, rnd.
Figure 873A
retained by
fixed hold
down, srp
edge hole
Flexitray Koch Higher than Wide range Low Good
Type To Sieve, w/
lift, con- lower entr.
toured hole
Figure 8-72
Flexitray Koch Medium Good, fixed Medium Good to
Type S, fixed by design Medium
triangular
valve
Figure 8-72
Ballast, Glitsch Higher than High/High Medium Good
Valve Sieve Similar
V-Series to Sieve
V1 thru
V-5 valves
Figure 8-74 and 8-77
Ballast Glitsch Higher than High/High Medium Good
Valve Bubble Cap to low
Figures 8-73 and 8-76 or Sieve
A-Series
lift, A-l
A-5 w/cages
Figure 87.5
.
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