che_june-2024 - 15

uid load conditions are often prevalent in chemical
separations. Fortunately, advanced technologies are
available to reduce these issues.
Koch-Glitsch offers a range of solutions to lessen
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03.09. - 06.09.2024
HALL 4.0, BOOTH J22
the impact of fouling, including fouling-tolerant tray
designs using large, fixed valves like the Provalve
tray, which offers a strong forward pushing action to
keep the potential foulants moving down the tower.
Corrosion is also a major challenge in chemical
separations and internals made of stainless steel or
certain plastics will not work within highly corrosive
media, says Rainald Pabst, sales product manager,
columns and internals, with DeDietrich Process Systems
GmbH (Mainz, Germany; www.dedietrich.com).
For this reason, DeDietrich offers high-performance
column internals made of high-corrosion-resistant
materials, such as borosilicate glass, glass-lined
steel, Tantalum, Si-ceramics and fluorinated plastics
like polytetrafluoroethylene (PTFE) (Figure 4).
" These materials are more corrosion resistant in
difficult, heavy chemical industries, such as mineral
acid recovery plants than Hastelloy or other metallic
packings, but offer nearly the same pressure drop
and behavior as metallic structured packings, " says
Pabst. " We can combine highly corrosion-resistant
materials with structured packings to solve the challenges
of new separation processes but also find
that customers who have been operating columns
for 30 or 40 years with older packing styles come to
us for these modern packings with higher efficiency
and throughput, as well as corrosion resistance. "
Raschig also offers its Raschig-Pak Ceradur (Figure
5), a special ceramic packing with a unique
chemical composition that results in superior chemical
resistance and provides an alternative to more
expensive packings.
And, Sulzer Chemtech (Winterthur, Switzerland;
www.sulzer.com) has developed a unique hybrid
gauze structured packing, AYPlus DC (Figure 6), to
overcome the issues associated with ultra-low liquid
load operating conditions. In these conditions, it is
challenging to have adequate liquid spreading and
wettability on the surface of structured packings,
which leads to a significant drop in efficiency. Sulzer's
packing AYPlus DC offers excellent wettability
even for an aqueous system with high surface tension,
the company says.
The performance has been tested in Sulzer's R&D
test center in Winterthur, witnessed by an independent
research institute, and has been successfully
proven in the field in nearly 100 installations. In
combination with Sulzer's MellaTech ultra-low liquid
load distributor, AYPlus DC outperforms equivalent
metal-sheet structured packings with up to three
times more efficiency while meeting requirements
in terms of capacity and pressure drop. The packing
improves the performance and reduces energy
consumption of various highly relevant aqueous applications
with low liquid load, such as the drying
column in an ethylene glycol plant.
CHEMICAL ENGINEERING WWW.CHEMENGONLINE.COM
koerting.de | +49 511 2129-0 | sales@koerting.de
For details visit adlinks.chemengonline.com/86464-08
Handling
THE ADVANTAGES OF
HYDROGEN HANDL ING
USING JET EJECTORS
Reliable, controllable, and suitable
for explosive environments
Low maintenance because
no moving parts
Propellant and suction medium
as required (hydrogen-ready)
Lots of materials possible
Vacuum to high pressure - longstanding
experience for top performance
Discover more:
koerting.de/hydrogen
http://adlinks.chemengonline.com/86464-08 http://www.dedietrich.com http://www.sulzer.com http://WWW.CHEMENGONLINE.COM
che_june-2024

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