Ekasic® Silicon Carbide Plate Heat Exchangers - ESK- Advanced ...

EKasic ®
Silicon Carbide
Plate Heat Exchangers
Created for hot acids and alkalis
Long lifetime in NaOH, H 2 SO 4 and mixed acids
Compact and cost-effective
Customized special models

heat transfer coefficient [W/m 2 K]
EKasic ®
Silicon Carbide
Plate Heat Exchangers
10000
8000
6000
4000
2000
EKasic ®
silicon carbide plates in ESK´s design
Innovative Plate Design
The plates of high-performance EKasic ®
silicon carbide combine maximum heat
transfer performance with minimum
pressure loss. The patented ESK
channel design permits a meandering
flow. The specially perforated channels
cause turbulence even in highly viscous
fluids. Together with the excellent
thermal conductivity of SiC ceramics,
this innovative plate design forms the
basis of the high thermal efficiency (cf.
Fig. 1).
0
heat transfer coefficient [W/m 2 K]
10.000 10000
8.000 8000
6.000 6000
4.000 4000
2.000 2000
0
Calculated - cold water
Calculated Calculated - hot - cold water
cold water Calculated - hot water
cold water
hot water hot water
0
500 1.000 1.500 2.000 2.500
flow rate [kg/h]
0 500 1.000 1.500 2.000 2.500
flow rate [kg/h]
Flow rate [ kg/h ]
Fig. 1
Heat transfer rates
of EKasic ®
silicon carbide
Robust, Flexible and Reliable
EKasic ®
Heat transfer coefficient [ W/m 2
·K ]
silicon carbide ceramic plate
heat exchangers meet the demands for
a robust design, maximum corrosion
resistance and reliability. They are
designed, built and manufactured
according to the pressure equipment
directive 97/23/EC.
The apparatus meets operating
pressures up to 16 bar and
temperatures from -30 to +200 ° C
as standard. The unit is also
characterized by outstanding thermal
shock resistance and insensitivity to
steam hammer.
Ceramic Plates also
Fully Welded
As standard, EKasic ®
plate heat
exchangers are gasketed with highly
resistant PTFE gaskets. For even
higher leak resistance, the plate packs
are also available in fully welded
construction. For production of the
fully welded ceramic plate packs, a
specially developed and patented
welding process is used. The result is
a hermetically tight SiC plate monolith.
Monolithic SiC plate heat exchangers
offer the greatest protection against
leakage.

SiC high-performance
ceramic plate heat exchangers
for extremely corrosive or
particle-containing fluids.
Tailor-Made for Hot Acids
and Alkalis
EKasic ®
plate heat exchangers are
designed for use in production systems
for the chemical industry and related
sectors. They reliably perform their
function as preheaters, coolers or
condensers. EKasic ®
silicon carbide
plate heat exchangers superbly
withstand wear by particle-containing
fluids and attack by highly corrosive
media, such as concentrated NaOH,
hot H 2 SO 4 or mixed acids (cf. Fig. 3).
Advantages
• EKasic ®
silicon carbide is universally applicable and prolongs the equipment lifetime
even in extremely corrosive fluids.
• High wear resistance significantly increases product quality
• ESK plate design: low pressure loss, high thermal efficiency and low fouling
tendency
• Compact, lightweight apparatus for extremely small spaces and easy installation
• Operating pressure up to 16 bar in the standard configuration
• Minimum-gasket designs (monolithic or semi-welded) for extreme reliability

Fig. 2
Comparative thermal conductivities
of EKasic ®
silicon carbide
16 Titanium
12 Hastelloy
1.16 Enamel
0.2 Fluorpolymer
54.4 Tantalum
Certified Ceramic Material
120 EKasic ®
C
0 50 100 150 200 250
[W/m·K]
The EKasic ®
silicon carbide plate
material is approved according to FDA,
KTW, WRAS and Fresenius for drinking
water applications, and is also harmless
for food contact. The ceramic does not
release either particles or metal ions. Its
outstanding thermal conductivity
(cf. Fig. 2), resistance to hot acids and
alkalis (cf. Fig. 3) and extreme hardness
and wear resistance make EKasic ®
silicon carbide the ideal material for
extremely challenging requirements.
Aluminum
230
Easy Maintenance – Low
Fouling Tendency
Fouling tendency of SiC ceramics
is considerably lower than stainless
steel. If cleaning should be necessary,
the cleaning-in-place (CIP) method
can be used easily and reliably, even
with aggressive, preheated cleaning
agents. Since the units are based on
conventional steel-frame constructions,
maintenance is very easy. The gasketed
models are easy to open for cleaning
and maintenance.
B500 gasketed EKasic ®
silicon carbide plate heat exchanger
Models for Preheating,
Cooling and Condensation
The B260, B500 and B585 models are
designed for heat exchange between
liquid media. With flange sizes up to
DN80, they can process throughputs
up to 90 m 3
/h. The plate condensers
of the K585 series are available for
condensation and evaporation. The
flange size of DN150 is intended for
throughputs of 3,000 m 3
/h.

Fully welded plate monolith
of EKasic ®
silicon carbide
Seamlessly Bonded Plate Pack
With a welding process patented by
ESK, plate packs can be seamlessly
bonded into pressure-resistant, gastight
monoliths.
Corrosion resistance
of EKasic ®
silicon carbide
Fluid
120 °C
dest. H O 2
96% H SO 2 4
65% HNO3 32% HCI
50% HF
1:1 HF/HNO3 30% NaOH
30% KOH
220 °C
0.0001 0.001 0.01 0.1 1 10 100 1000
Fig. 3
Customized Special Models
ESK plate heat exchangers are also
available in special designs for extremely
challenging applications. Units can be
produced for pressures up to 60 bar
and temperatures > 200 °C on
request. The plate packs can be
provided with special circuitry if
necessary. Single-pass flow can thus
be replaced by multi-pass operation or
hybrid circuits if necessary.
Material removal [ mm/year ]
Compact, Economical
and Durable
Because of the high specific transfer
rate, the EKasic ®
plate heat exchangers
can be kept very compact. The
dimensions and weight are surprisingly
small. High transfer rates can be
achieved very cost effectively with
a minimum size. Thanks to the high
corrosion resistance of the basic
material, the units are characterized
by high lifetimes. The durability of the
materials reduces maintenance costs
and increases cost effectiveness.

Specifications of Plate Heat Exchangers
Plate heat exchanger models
B260 B500 B585 K585
Configuration of plate packs G, SW, M G, SW, M G, SW G, SW
Exchange surface area [ m 2
] 0.05 – 0.6 0.2 – 4.4 0.4 – 5.8 0.4 – 5.8
Flange size [ mm ] 25 50 80 150
Max. liquid throughput [ m 3
/h ] 8.5 35 90 140
Max. steam throughput [ m 3
/h ] 75 280 700 2,500
G = PTFE gasketed
SW = semi-welded
M = fully welded
Ansicht V
A
A
Front, top and side views of EKasic ®
B500 plate heat exchanger
The data presented in this leaflet are in accordance with the present state of our knowledge, but do not absolve
the user from carefully checking all supplies immediately on receipt. We reserve the right to alter product constants
within the scope of technical progress or new developments. The recommendations made in this leaflet should be
checked by preliminary trials because of conditions during processing over which we have no control, especially
where other companies’ raw materials are also being used. The recommendations do not absolve the user from the
obligation of investigating the possibility of infringement of third parties’ rights and, if necessary, clarifying the position.
Recommendations for use do not constitute a warranty, either express or implied, of the fitness or suitability of
the products for a particular purpose.
HEAT EXCHANGER
B500
®
EKasic PLATE PACKAGE
The management system has been certified according to
DIN EN ISO 9001, DIN EN ISO 14001. EKasic ®
is a registered
trademark of ESK Ceramics GmbH & Co. KG.
ESK Ceramics GmbH & Co. KG
Max-Schaidhauf-Straße 25
87437 Kempten, Germany
www.esk.com, info@esk.com
PL / EKasic ®
Heat Exchangers / e - 06 · 2012