(random packing)

1
???????
2
???????????
1.????? (random packing) 2.????? (structured
packing)
1.???????? 2.????? 3.????????
3
???????
4
?????????????
5
???????
??????
??????
Characteristics Trays Packing Packing
Characteristics Trays Random Structured
Capacity
F-factor (m/s)/(kg/m3)1/2 0.3-2.4 0.3-2.9 0.12-4.4
C-factor (m/s) 0.01-0.08 0.01-0.09 0.003-0.14
Pressure drop (mbar/theor.) 4-11 1.2-2.4 0.013-1.0
HETP (m) 0.6-1.22 0.46-1.52 0.1-0.76
6
???????????
????? 50mm??? 70??? 50??? 40???
????(torr) 240 240 240 240
?????? 68 68 68 68
??HETP(m) 0.71 0.72 0.65 0.53
????(m) 48 49 44 36
??(torr/m) 3.6 1.0 1.7 2.9
????(torr) 173 50 74 103
????(torr) 67 190 166 137
7
Mellapak ???????????/???
??? ??? ??? ???
??? ?? Mellapak ???(mBar) 247 62
???(m) ?5.2/ ?4.4 ?? ????(?) 104 83
??(m) 40 40 ??? 9 6.5
F ?? (m/s.(kg/m3)0.5) 1.7 2.9 ???? 55 70
F ?? (m/s.(kg/m3)0.5) 1.7 2.9 ???(Kg/hr) 16500 28300
????(Kg/hr) 70000 90000 ????(-) 100 170
????(mBar) 73 73 ???(-) 0.5 lt0.1
????(mBar) 320 135 ????????() 100 75
8
?????????????
???
???
(???)
(?????)
??
MeOH92.44
MeOH98.49
??80?
??71?
??
??119?
??109?
??
551kg/hr
233kg/hr
??
2
2
0.3kg/cm
0.05kg/cm
9
?????????????
10
????????????- UCL-WM1
??????HETP?,??????, ????
???,???????,????? ???? ?????????????
????????,????? ?????,??????,???? ????
(turn-down ratio)? ????????????????
??????????????
?? ????SUS304?SUS316
???97 ????600 m2/m3 HETP?2050
cm ????45 ??195mm/? ???5 10 torr/m packing
????????
???? ????? ????? ??? ???
11
??????
1.?????? Bi-Frac tray?Superfrac/Minivalve
tray?Nye/Minivalve tray? 2.?????? Max-Frac
tray? Superfrac tray? Nye tray? Triton
tray?Vortex tray? 3.???? 4.???? CoFlo tray ,
JCPT tray
???????????????
12
???????????
13
???????? (JCPT, Jet Co-flow Packing Tray)
IPA??????200 ppmv,???450 710???,IPA????????95
???
14
????????????????
15
???????????
1.???? 2.???? 3.???? 4.???? 5.???
1.???????? 2.????? 3.????????
16
??/??????

• ????(?IPA/H2O)???????(???/?),?????????????????????
  ?,????????
• ????????????????,???????,???????
• ????????????????????,???????,???????

??? ?????1(?????)
??? ?????1(???????)
17
??/????????

• ????????????????????????
• ?????????????
• ?????????????
• ?????????
• ????
• ???????????
• ????
• ???
• ??
• ???

18
???????(???)
??? (?)?? ???/?/??? 64.3oC ???/??? 69.4o
C ?/??? 69.5oC (???) ???/?
80.3oC (??) ??? 80.8oC (???)
??? 82.2oC ????(99.5wt??)
19
????????
?????
???????
?????
??
????
?????
??????
????? 100.95? ?? 110.65 ? ??181.65 ?
??????
20
????????
??????THF/WATER?????
21
Dual-Column Pressure Sensitive Distillation
Process

• Applications
• Acetonitrile/Water
• THF/Water
• Methanol/MEK
• Acetone/Methanol
• Benzene/IPA
• Ethanol/EAc
• Methanol/THF
• Methanol/DCM
• Methanol/Toluene
• Ethanol/Acetonitrile

22
????
?????????????????,????????????????????????,???????
???????????????,?????????????
23
????
1.????????,???????? ??????,?????????? 2.???????
???,?????? ?,????????,??????
????? 3.???????,?????????
??
??
1.?????? 2.??????????????? 3.????????????
24
HIAG(1930-1951) EthanolH2O KAcNaAc(70/30wt)
IHI(1969) IPA H2O CaCl2
25
??????
??
??
??????????? (1)???????? (2)???????? (3)???????
26
??????
(1)????MD??100?????????????
????????????? (2)??????????????? (3)?????????????
(4)??????????? (5)???????????????? (6)????????????
?
27
???????????
1.????? 2.???? 3.???? 4.???? 5.???? 6.???? 7.DWC??
1.???????? 2.????? 3.????????
28
?????(VRC)
???T1-T2lt30?
?????
VRC???
29
????????????
30
????????????
31
????????????
32
?????
Agitated Thin Film Evaporator (ATFE)
??
????
?1000cp???
??
???????
??
??
??
?? ????30??????????????????
33
?????????
????????????
(1)?????????????,???????
(2)????????????,??????????????
(3)???????,??????????
????????????????????
34
??????
??????
???????
??????
????????
????,????
)
???
???
????
?????
?????
????
?????
??
35
??????
?????????????,??
?????????
??????????????????
???10ton/hr
36
????

• ??????????????????

??????????
??????????
37
??????
38
????
????(?????)
????(MTBE, TAME?)
?????????????
????(???)
?????(??66)
????
????
??
????
??
???
???
1980-
???
-????
-??????
????
????
????
??????
39
??????????
Ethyl Acetate
Acetic acid
???
???
???
???
Ethanol
???
40
????
????(short-path distillation) ??????,?????,???????
????(molecular distillation) ???????(10-3torr),?
?????????,??????????????????????
1.?????????????? 2.??????????? 3.????????????? 4.?
????????? 5.????????
41
????????????
42
????????
??????? ??????
???????10-3torr ??
43
?????????

• ???????????
• ?????E?????
• ?????????
• ?????
• ????????
• ?????
• ?????????????
• ??????

44
Divided Wall Columns (DWC) ???????????????????????
,???????????????
Thermally Coupled 1936 (Petlyuk et al. 1965)
(Wright 1946)

• DWC?????????
• ???????????
• ?????????
• ??????DWC???????
• ???????????
• ???????detail design

45
DWCs???

• DWC technology benefits
• Lower energy consumption
• ?????????2040?reboiler duty
• Less investment cost
• 1030????????????????????
• Lower maintenance cost, 20
• Safer and more reliable

• DWC technology obstacles
• ??????DWC????????,??????
• ?????????DWC??????

46
DWC general guidelines

• ??DWC???
• ??????????A, B, C???????????
• ????B???????
• ?????????B??????????
• ?????????,??????????

• ???DWC???
• ?????????????
• ????????????????

47
DWC??????????

• ??????
• BASF?1985???,????25?DWC
• Kellogg ?BP?????2?DWCs,???????
• ???
• ????????6?DWC?Pilot-Plant????
• Linde AG?Sasol???DWC(H64.5m, D4m)??1-
• octene???
• Linde AG?Sasol?????DWC(H107m, D5m)?
• ?1-hexene???
• Krupp Uhde?Veba Oel???DWC????????
• ?????
• Krupp Uhde?Chevron???DWC????????
• ???
• UOP?DWC?????Kerosene prefractionation ?
• PEP fractionation?

• ????
• UPC
• NTNU
• UMIST

• ????
• BASF
• UOP
• Kellogg
• Sumitomo