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The FT174 is a modular HTST/UHT processing system designed to treat products at flow rates of 10-60 l/h. Interchangeable modules for direct heating (steam injection) or indirect heating (using tubular, plate or scraped surface heat exchangers), aseptic processing, upstream or downstream homogenisation and additional chilling are available.
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FT174 HTST/UHT Base unit
The base unit comprises a stainless-steel table for mounting the process equipment, a feed pump and vessel, the touchscreen control panel, steam line components and all associated electrical controls housed in an IP65 cabinet. The base unit provides the services to the heat exchangers.
Under the tabletop are positions for multiple options or accessories. These include the vacuum, extraction and CIP pumps, homogeniser, direct steam injection and the hot water circulator options.
The system is PLC controlled, with a 15” full colour touchscreen panel PC (IP65). The touch-screen control panel makes it extremely user friendly to configure and monitor processing parameters.
These, along with many other options, enable multiple modules to be included in the same system, giving high process adaptability by reconfiguration of flexible product hoses, using quick-release connections.
The sterilisation options enable it to be linked to an Armfield sterile filling bench to produce sterile product, even when using long holding tubes and/or downstream homogenisation.
As with all UHT Armfield systems, it comes with hygienic fittings throughout as standard.
Different sets of processing parameters can be edited, stored and quickly recalled using the system’s menu capability.
Similarly, the ancillary items such as the homogeniser and sterile filler are also controlled from this panel. The system can be quickly and easily interfaced to other free-standing Armfield process items, such as a mixing vessel, a chiller (FT63 or FT64) or a sterile filling system (FT83XA).
A progressive cavity feed pump is used for consistent volumetric flow rate for a wide range of liquid viscosities.
It consists of a stainless steel rotor within a food-grade rubber stator.
All metal parts of the pump that come into contact with product are made from 316L stainless steel or other food-grade materials.
This pump provides a very wide range of flow capability, from as low as 10 l/h to as much as 150 l/h (used for CIP). The pump is fitted with a feed tank and level sensor, a pressure-relief valve and temperature and pressure sensors.
A gentle preheat action is achieved by using steam at sub-atmospheric pressure. In this way, stable temperatures of 100 – 60°C or less are feasible. Control of the steam pressure/temperature is achieved by a manual steam-control valve or an automatic PID control is an available option.
Hot water preheat to enable control from ambient to sub <100°C is available on request.
Steam is applied to the service side of the heating section of the product heat exchanger using an electro-pneumatic steam-control valve.
The product temperature is measured at the end of the heat exchanger (or holding tube) and this value is used by a PID control algorithm to control the steam-regulating valve, ensuring the user defined set point is maintained.
The same steam output and control valve is used to provide the steam injection for the optional Direct Steam Injection module. A pressurised hot water heating system is available on request.
Cooling water is applied to the cooling section of the product heat exchanger with the flowrate controllable and measured.
An additional heat exchanger using an external chilled water or glycol supply. Options available are a recirculating chiller such as the Armfield FT63, FT64 or other chilled/ice water supply.
A progressive cavity feed pump is used for consistent volumetric flow rate for a wide range of liquid viscosities. It consists of a stainless steel rotor within a food-grade rubber stator.
All metal parts of the pump that come into contact with product are made from 316L stainless steel or other food-grade materials.
This pump provides a very wide range of flow capability, from as low as 10 l/h to as much as 150 l/h (used for CIP). The pump is fitted with a feed tank and level sensor, a pressure-relief valve and temperature and pressure sensors.
FEED PUMP
Pump type: Progressing cavity variable-speed pump
Particulate handling: 0.8mm
Fibre handling: 25mm
Flowrate: 10-120l/h (max)
Used for Preheat, Main heat, Primary Cooling and/or Secondary Cooling
Nominal/Processing Flowrate: 20l/h / 10-60l/h
Plate overall dimensions: 75 x 115mm
Effective diameter: 3.0mm
Plate thickness: 0.5mm
Wetted perimeter: 153.0mm
Working pressure: 10 bar (max)
Materials
Plates: 316 stainless steel
Gaskets: Food-grade silicone
Used for Preheat, Main heat, Primary Cooling and Secondary Cooling
Nominal/Processing Flowrate: 20l/h / 10-60l/h
Tube diameter (product side): 8.1mm
Overall diameter: 15.8mm
Material: 316 stainless steel
Assembled test pressure: 15 bar
Working pressure: 10 bar (maximum)
Used for Preheat, Main heat, Primary Cooling and/or Secondary Cooling
Nominal/Processing Flowrate: 20l/h / 10-40l/h
Heat transfer area: 0.045m²
Shaft/barrel volume ratio: 1 : 3.5
Scraper blades: 4 PEEK scrapes along stainless steel shaft, 2 pairs with 180° separation
Barrel length: 0.35m
Barrel working pressure: 10 Bar
Mains water: 5 l/min @ 2 bar (10 l/min if FT174-49 or FT174-55 are fitted)
Electricity: 400V / 3ph / 50-60Hz / 30 amp
Consult Armfield for the specifics of your system
Compressed air: 6 bar
Steam: 6 bar, estimated consumption 15 kg/h
Length: 2.25m
Width: 0.89m
Height: 1.53m
Note: Armfield can supply a steam boiler if required, order code UOP10
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