Total liquid flow on the tray = 39,632 GPH at 60
F.
The loading data on this tray is as follows:
Vapor
Liquid
Temperature
F
632
627
Pressure psig
23.8
–
mol/h
3,586.9
GPH hot 54,120
lb/h
386,118
lb/h 288,522
ACFS
302
2.0
ρv lb/cuft
0.355
lb/cuft 39.9
G f ¼ 1, 100√0:355 Â 39:9 À 0:355
ð
Þ
¼ 4, 121 lb=h Á sqft
G a ¼ 4, 121 Â 0:8 ¼ 3, 297 lb=h sqft
Tray area required to handle vapor ¼
386, 118
3, 297
¼ 117 sqft
This may be considered as the bubble area.
Let the downcomer area be such that liquid flow is 0.6 ft/s. Area required is
Table 13 Summary of the main tower loading
Liquid – from tray
Vapor – to tray
Drawoff tray
lb/h
GPH
Hot GPH
lb/h
Mol wt
mol/h
Tray 10
a
At 627
F
At 632
F
Hydrocarbons
174,648
23,990
32,760
357,138
181
1,976.9
Steam
–
–
–
28,980
18
1,610.0
Total
174,648
23,990
32,760
386,118
107.6
3,586.9
Tray 22
a
At 498
F
At 500
F
Hydrocarbons
122,412
17,487
22,809
278,148
154
1,802.9
Steam
–
30,818
18
1,027.3
Total
122,412
17,487
22,809
308,966
109
2,830.2
Tray 34
At 367
F
At 370
F
Hydrocarbons
21,540
3,254
3,925
133,050
115
1,157.8
Steam
33,968
18
1,887.1
Total
21,540
3,254
3,925
167,018
55
3,044.9
Tray 45
At 255
F
At 262
F
Hydrocarbons
106,438
16,735
19,029
183,089
112.6
1,626.1
Steam
37,381
18
2,076.7
Total
106,438
16,735
19,029
220,469
59.5
3,702.8
a
Does not include pumparound liquid stream
178
D.S.J. Jones
F.
The loading data on this tray is as follows:
Vapor
Liquid
Temperature
F
632
627
Pressure psig
23.8
–
mol/h
3,586.9
GPH hot 54,120
lb/h
386,118
lb/h 288,522
ACFS
302
2.0
ρv lb/cuft
0.355
lb/cuft 39.9
G f ¼ 1, 100√0:355 Â 39:9 À 0:355
ð
Þ
¼ 4, 121 lb=h Á sqft
G a ¼ 4, 121 Â 0:8 ¼ 3, 297 lb=h sqft
Tray area required to handle vapor ¼
386, 118
3, 297
¼ 117 sqft
This may be considered as the bubble area.
Let the downcomer area be such that liquid flow is 0.6 ft/s. Area required is
Table 13 Summary of the main tower loading
Liquid – from tray
Vapor – to tray
Drawoff tray
lb/h
GPH
Hot GPH
lb/h
Mol wt
mol/h
Tray 10
a
At 627
F
At 632
F
Hydrocarbons
174,648
23,990
32,760
357,138
181
1,976.9
Steam
–
–
–
28,980
18
1,610.0
Total
174,648
23,990
32,760
386,118
107.6
3,586.9
Tray 22
a
At 498
F
At 500
F
Hydrocarbons
122,412
17,487
22,809
278,148
154
1,802.9
Steam
–
30,818
18
1,027.3
Total
122,412
17,487
22,809
308,966
109
2,830.2
Tray 34
At 367
F
At 370
F
Hydrocarbons
21,540
3,254
3,925
133,050
115
1,157.8
Steam
33,968
18
1,887.1
Total
21,540
3,254
3,925
167,018
55
3,044.9
Tray 45
At 255
F
At 262
F
Hydrocarbons
106,438
16,735
19,029
183,089
112.6
1,626.1
Steam
37,381
18
2,076.7
Total
106,438
16,735
19,029
220,469
59.5
3,702.8
a
Does not include pumparound liquid stream
178
D.S.J. Jones