GTC Technology offers a dividing wall column (DWC) design that separates a multi-component feed into three or more purified streams within a single tower, eliminating the need for a second column. This saves both capital and energy costs compared to a conventional two-column system. The DWC uses a vertical wall to divide the column into two sections for pre-fractionation, allowing light components to travel up and heavy components to travel down while separating out a middle product. GTC provides detailed engineering and construction management for DWC applications, with estimated 20-30% lower capital and operating costs than a conventional system.

1. Engineered to Innovate®
Dividing Wall Column Design Saves Cost and Energy
GT-DWC
SM

2. GT-DWC
DividingWallColumnDesignSavesCostandEnergy
GTC Technology is widely known for innovation,
technical knowledge and commitment to excellence
through proprietary technologies and customized
solutions. Our process equipment technology offerings
include the dividing wall column (DWC), which separates
a multi-component feed into three or more purified
streams within a single tower, thereby eliminating the need
for a second column. This design saves capital and energy
costs normally invested in a separation unit.
The DWC design uses a vertical wall to divide the middle
of the column into two sections. The feed is sent to one
side of the column called the pre-fractionation section.
There the light components travel up the column where
they are purified while the heavy components travel down
the column. The liquid flow from the column’s top and the
vapor flow from the bottom are routed to their respective
sides of the dividing wall.
GTCTechnology 1001 S. Dairy Ashford, Suite 500 Houston,Texas 77077 USA Main +1-281-597-4800 Toll Free +1-877-693-4222
inquiry@gtctech.com | www.gtctech.com
Engineered to Innovate
SM
GT-DWC versus Conventional Two-Column System
Two-Column System GT-DWC
Feed
(A, B, C)
Feed
(A, B, C)
A
BB
C
C
A
From the opposite side of the wall, the side product
is removed from the area where the middle boiling
components are most concentrated. This arrangement is
capable of producing a much purer middle product than a
conventional side draw column of the same duty, and at a
higher flow rate. And for the same product specifications,
GT-DWC requires substantially lower capital and
operating cost than a conventional two-column system.
The technology is especially suited for removing a heartcut
from a multi-component mixture, where the alternative is a
series of fractionating towers.

3. GTCTechnology
GTCTechnology 1001 S. Dairy Ashford, Suite 500 Houston,Texas 77077 USA Main +1-281-597-4800 Toll Free +1-877-693-4222
inquiry@gtctech.com | www.gtctech.com
Engineered to Innovate
• Our integration of process and application knowledge
results in innovative designs of DWC internals.
• GTC internals ensure correct pressure balance and
arrangement along with internal distribution. This is
the key to reliable, trouble-free operation of dividing
wall columns.
Engineering Services
• GTC provides detailed engineering, procurement and
construction management for all DWC applications.
GT-DWC CAPEX is lower by 20-30%
Benefits of GT-DWC
100
Conventional Two
Column System
GT-DWC
80
60
40
20
0
GT-DWC OPEX is lower by 20-30%
100
Conventional Two
Column System
GT-DWC
80
60
40
20
0
Equipment Count & Plot Space
Conventional Two
Column System
Column
Reboiler
Condenser
Pump
Plot Space
2
2
2
4
100%
GT-DWC
1
1
1
3
70%
Installed Cost
Equipment Cost
Engineered to Innovate
To learn more about GTC Technology’s leading-edge technology solutions and the many ways we can help improve
your operations and profitability, call us today at +1-281-597-4800, e-mail us at inquiry@gtctech.com or visit our
Web site at http://www.gtctech.com.
GT-DWC
SM
is a service mark of GTCTechnology US, LLC.
Process Design and Control Scheme
• Conceptual design to basic engineering package
of the dividing wall column, coupled with dynamic
simulation modeling, ensures reliable process design
and a solution that is optimized for your specific
application.
DWC Internals
• GTC is a leading supplier for column internals of
all types.
One-StopShop–Minimizeworkandcostbyordering
thecompletesystemfromGTC

4. +1-281-597-4800
inquiry@gtctech.com
www.gtctech.com
Engineered to Innovate®
©2014 GTC Technology - All rights reserved.
GTC Technology is a global licensor of process
technologies and mass transfer solutions with the
mission of creating value for our clients. Refining,
petrochemical and chemical companies around
the world rely on GTC’s advanced processes
to optimize production capacity and efficiency.
With insightful industry expertise, research
capabilities and innovative thinking, GTC solves
complex processing problems and has earned
a reputation of excellence in designing and
delivering high-quality, strategic solutions for
clients worldwide. We’re engineered to innovate.