Presentation Montz-Kaibel for Divided Wall Technology
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Transcript of Presentation Montz-Kaibel for Divided Wall Technology
May 05th, 2007 B. Kaibel / Z. Olujic, EFCE WP on Fluid Separations, Z. Olujic Symposium, Delft, NL 1
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Unfixed Wall: The Key to a Breakthrough in Dividing Wall Column Technology
B. Kaibel, H. Jansen, T. Rietfort, E. ZichJulius MONTZ GmbH, Hilden, Germany
Z. OlujicTU Delft, Process & Energy Department, Delft, the Netherlands
EFCE WP on Fluid Separations, Z. Olujic Symposium, May 05th, 2007, Delft, NL
May 05th, 2007 B. Kaibel / Z. Olujic, EFCE WP on Fluid Separations, Z. Olujic Symposium, Delft, NL 2
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Overview
• Dividing wall columnconcept introduced:- 1935 by Monro
(US 2,134,882)and
- 1946 by Wright (US 2,471,134)as a concept design fortray columns.
• First commercial application in 1985 by BASF, as a packed column(Montz-Pak A3 packing)
May 05th, 2007 B. Kaibel / Z. Olujic, EFCE WP on Fluid Separations, Z. Olujic Symposium, Delft, NL 3
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Dividing Wall Column - a rising distillation star
0
10
20
30
40
50
60
70
80
1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008
Non-welded dividing wall
Number of DWCsdelivered by Montzover the years
May 05th, 2007 B. Kaibel / Z. Olujic, EFCE WP on Fluid Separations, Z. Olujic Symposium, Delft, NL 4
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Range of Applications
Diameter 0.04 m - 4.0 mHeight 2.5 m - 74 m
Theoretical trays up to 100
Pressure 2 mbar - 10 bar
Purities normal purity demandsup to electronic grade specifications (< 1 ppm)
May 05th, 2007 B. Kaibel / Z. Olujic, EFCE WP on Fluid Separations, Z. Olujic Symposium, Delft, NL 5
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4 component DWC
A
D
A,B,C,DA,B,C
A
C
BC
B
Dividing Wall ColumnsSeparation of a three and four component mixture
Welded or non-welded dividing wall
May 05th, 2007 B. Kaibel / Z. Olujic, EFCE WP on Fluid Separations, Z. Olujic Symposium, Delft, NL 6
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Dividing Wall Columns
Main advantages Main drawbacks
• One operating pressure• Higher pressure drop• Higher temperature difference• Column height
• Lower investment costs• Lower energy demand• Smaller plant size• Minimized residence time• Better yields• High flexibility
May 05th, 2007 B. Kaibel / Z. Olujic, EFCE WP on Fluid Separations, Z. Olujic Symposium, Delft, NL 7
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DW-arrangements 3
αA αBαB αC
>αA αBαB αC
<
A,B,C
A
B
C
Dividing Wall ColumnsColumn set-up: Feed/Side product offset
A,B,C
A
B
C
May 05th, 2007 B. Kaibel / Z. Olujic, EFCE WP on Fluid Separations, Z. Olujic Symposium, Delft, NL 8
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DW-arrangements 2
mB << mA, mC. . . A
B
C
A, B, C
Dividing Wall ColumnsColumn set-up: Off-center dividing wall arrangements
May 05th, 2007 B. Kaibel / Z. Olujic, EFCE WP on Fluid Separations, Z. Olujic Symposium, Delft, NL 9
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DW-arrangements 1
High vacuumapplication
Vapour feed
Difficult liquiddistribution
A,B,C
A
B
C
A,B,C
A
B
C
Dividing Wall ColumnsColumn set-up: Different vapour traffic solutions
Appropriate wall position?
May 05th, 2007 B. Kaibel / Z. Olujic, EFCE WP on Fluid Separations, Z. Olujic Symposium, Delft, NL 10
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DW-arrangements 1
High vacuumapplication
A,B,C
A
B
C
Dividing Wall ColumnsImproved liquid distributors for extremely small liquid loads
A
B
C
Distribution supported by capillary action
A,B,C
May 05th, 2007 B. Kaibel / Z. Olujic, EFCE WP on Fluid Separations, Z. Olujic Symposium, Delft, NL 11
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Tight enough?Customers had to be convinced by experiments• Liquid: Tests with coloured water• Gas: Tests with carbon dioxide (TU Delft)
Non-welded Dividing Wall
May 05th, 2007 B. Kaibel / Z. Olujic, EFCE WP on Fluid Separations, Z. Olujic Symposium, Delft, NL 12
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Montz Patents Overview
• Non-welded wall elementsfor packed columns
• Non-welded wall elements for trayed columns
• Self-centering structured packing• Integrated flashbox• Welded-in dividing wall solution
for- small column diameters- big column diameters
May 05th, 2007 B. Kaibel / Z. Olujic, EFCE WP on Fluid Separations, Z. Olujic Symposium, Delft, NL 13
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Loose DW 2a
Main advantages
• Insensitive to poor manufacturing tolerances of the column shell
• No partition tolerances
• Less weight
• Easy and precise assembly
• Minimized welding
• Conventional columns convertible to DWC
• Removable
Non-welded Dividing Wall
May 05th, 2007 B. Kaibel / Z. Olujic, EFCE WP on Fluid Separations, Z. Olujic Symposium, Delft, NL 14
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DWC Competence
New column design• Can meet all requirements: Thermodynamic, hydrodynamic and
constructional lay-out
Revamp of conventional columns• Flexible solution• Reuse of existing column shells• Non-welded and welded
dividing walls • Modification of internals• Non-welded dividing wall solution
minimizes downtime
May 05th, 2007 B. Kaibel / Z. Olujic, EFCE WP on Fluid Separations, Z. Olujic Symposium, Delft, NL 15
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Revamp to a Dividing Wall Column
Job• Convert conventional column into DWC
Requires• Dividing wall elements
non-welded orwelded
• New set of structured packings• Modification of liquid collectors
and redistributors
Case study: Packed Column DN1200
May 05th, 2007 B. Kaibel / Z. Olujic, EFCE WP on Fluid Separations, Z. Olujic Symposium, Delft, NL 16
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Revamp to a Dividing Wall Column
• Hydraulic check of tower incl. existing nozzlesfor new loadings
• Removal of internals• Modification of liquid collectors and nozzles,
packing and dividing wall supports• Packing installation along with non-welded
dividing wall• Installation of liquid distributors and collectors
Time line
May 05th, 2007 B. Kaibel / Z. Olujic, EFCE WP on Fluid Separations, Z. Olujic Symposium, Delft, NL 17
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Revamp to a Dividing Wall Column
May 05th, 2007 B. Kaibel / Z. Olujic, EFCE WP on Fluid Separations, Z. Olujic Symposium, Delft, NL 18
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Revamp to a Dividing Wall Column
May 05th, 2007 B. Kaibel / Z. Olujic, EFCE WP on Fluid Separations, Z. Olujic Symposium, Delft, NL 19
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PackedDividing Wall Column
with the non-welded wall solution
• Weld-in parts with an „out-of-the-middle“ wall position
Vapour feed
A,B,C
A
B
C
May 05th, 2007 B. Kaibel / Z. Olujic, EFCE WP on Fluid Separations, Z. Olujic Symposium, Delft, NL 20
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Trayed Dividing Wall Columns
MONTZ Thormann®-tray DN300
• Retrofit of existing trays withwall elements
• New tray set along withdividing wall usingexisting tray support rings and downcomer bars
• New tray set with welded-individing wall
• Pilot and small scale plantspossible
May 05th, 2007 B. Kaibel / Z. Olujic, EFCE WP on Fluid Separations, Z. Olujic Symposium, Delft, NL 21
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Trayed Dividing Wall Columnswith non-welded dividing wall
MONTZ Tunneltray DN3000
Advantages• Easy and fast assembly• Less weight• Removeable• Retrofit existing columns• Different tray types possible
May 05th, 2007 B. Kaibel / Z. Olujic, EFCE WP on Fluid Separations, Z. Olujic Symposium, Delft, NL 22
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Conclusion
A non-welded wall allows great flexibility with respect to bothprocess and mechanical design.
Packed, non-welded dividing wall columns• Well established technology since mid 1990s• Wide variety of experiences
Trayed, non-welded dividing wall columns• Technical concepts developed
Further details: www.montz.de / [email protected]