|
Applications
. Pasteurisation
. General cooling/heating of dairy, brewery, beverage and food
products
. Heating/cooling in the pharmaceutical industry.
Standard design
The frame
The plates and the pressure plate are suspended from an upper
carrying bar and located by a lower guiding bar, both of which are
fixed to the support column. The tightening bolts are equipped with
ball bearing washers in order to facilitate opening and closing of the
unit. The frame and support column have adjustable feet.
One unit may contain several heat exchangers, separated by
connection plates with interchangeable connections.
The Front plate
The Front plates are designed to meet the highest requirements in
food processing. The combination of high pressing depth and a
pattern with relatively few contact points provides longer operation
time without interruptions. The distribution pattern assures an even
flow over the entire plate. The ports have a diameter enabling cleaning
in place (CIP) with the same flow used in the process itself.
The plate pack
The chevron corrugation of the plates provides a passage between
the plates and supports each plate against the adjacent one. It also
enhances turbulence, resulting in efficient heat transfer.
Different chevron angles are available to reach the optimal high heat
transfer at a given pressure drop. A unique distribution area provides
an efficient flow over the plate surface. The Alfa Laval hanging system
enables easy handling of the plates in the frame. Furthermore, the
corner guiding provides a strong plate pack. The plates are reversible
and have parallel flow, which means that only one type of gasket
is needed.
Working principle
A plate heat exchanger consists of a pack of corrugated metal plates
with port holes for the passage of two fluids between which heat
transfer will take place.
The plate pack is assembled between a fixed frame plate and a
movable pressure plate and is compressed by tightening bolts.
The plates are fitted with a gasket which seals the inter-plate channel
and directs the fluids into alternate channels. The number of plates are
determined by the flow rate, physical properties of the fluids and the
temperature programme. Connections may be located in the frame
plate and the pressure plate.
 Standard materials
Frame
Frame and pressure plate in cladded stainless steel or surface coated.
All wetted parts in acid-proof stainless steel. Other surfaces in various
grades of stainless steel. Movable nuts on tightening bolts in chromium
plated brass.
Plate type
Front8 and Front10
Other plates of the FrontLine series are the WideStream and Gemini
plates.
Plates
Stainless steel AISI 316, Titanium or SMO.
Gaskets
Nitrile-FDA or EPDM-FDA.
The FrontLine plates are supplied with glue-free Clip-On gaskets,
which are easy to replace even with the plates still hanging in the
frame. The gasket material is selected for safe use in connection with
pharmaceutical and food products.
Technical Data
Mechanical design pressure (g) / temperature
RM cladded stainless steel 10 bar / 150°C
RH cladded stainless steel 16 bar / 150°C
RD cladded stainless steel 21 bar / 150°C
RMS surface coated 10 bar / 150°C
RHS surface coated 16 bar / 150°C
Complies with the European Pressure Equipment Directive (PED). May
carry the CE mark depending on the design conditions. Complies with
Alfa Laval Sound Engineering Standard (ALS).
Connections
DIN, SMS, Tri-CLAMP, BS/RJT and IDF/ISO male parts.
Others on request.
 Options
. Thermometer pocket and nib with ventilation cock 1)
. Thermometer pocket 1)
. Connection for 51 mm pressure transmitter 1)
. Protection sheet
. Bolt protections in stainless steel
. 3-Afinish
. Extendedleg
. Extra standard wrench or pneumatic tightening tool
. Test certificates and material certificate
. Testing by authorised inspection companies
1) At through pass corners in connection plates
|
