Establish drawoff tray location.
Allow six wash trays above the flash zone to the HGO drawoff. The HGO and
bottom pumparound will be drawn from tray 10.
Allow two trays for the pumparound return. Thus the pumparound will return on
to tray 12.
Allow ten trays from tray 12 to the LGO and the top pumparound drawoff. The
drawoff tray will then be tray 22.
Again allow two trays for the pumparound return. This will be tray 24.
Allow ten trays between top pumparound return and the Kero drawoff. This
locates the Kero drawoff at tray 34. It leaves 12 trays between the Kero drawoff
and the top tray (includes the drawoff tray and the top tray).
Summary of tray locations and total pressure (1st trial)
Tray no
Pressure (psig)
HGO drawoff
10
23.4
BPA return
12
22.7
LGO drawoff
22
19.5
TPA return
24
18.8
Kero drawoff
34
15.5
45
43
41
39
37
35
33
31 KERO
LGO
Flash Zone
HGO
29
27
25
23
21
19
17
15
13
11
9
7
5
4
1
5
7
9
11
13
15
17
19
21
23
Tray N°
25
27
29
31
33
35
37
39
41
43
45
200
Tower Profile
300
400
500
600
700
Tower Top
C o rr e ct e d P ro fil e
1 s t T ri a l
800
10
11
12
13
14
15
16
17
BOT
PA
18
19 TOP
PA
20
21
22
23
24
25
Press Psig
Fig. 19 Tower pressure profile
168
D.S.J. Jones