INOXPA INDIA PVT.LTD.

Pune - 411023,

Maharashtra, India

UHT Sterilisation of liquid and low-viscosity food products

Ultra-High-Temperature (UHT) treatment is a processing technology employed to kill microbial spores in order to guarantee safe and stable shelf life to food products by exposing them to high temperature, usually between 135°C and 145°C, over a very short time period ranging from 2 to 5 seconds.

The products treated in such a way can be maintained under unrefrigerated conditions for months.

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UHT Sterilisation of liquid and low-viscosity food products

Operating principle

UHT treatments are carried out in different ways, according to the nature of the product to be subjected to sterilisation. INOXPA offers:

  • Indirect heating UHT solutions, through tubular heat exchangers.
  • Direct heating UHT solutions, through tubular heat exchangers for heat recovery and steam injection for product sterilisation.


The heating of the product occurs in tubular heat exchangers designed to offer high thermal efficiency and optimum cleanability to ensure long operation which stands for increased plant availability.

In direct heating plants, the product is firstly heated by heat recovery in the tubular heat exchanger, while the sterilisation temperature is achieved by steam injection followed by flash cooling to remove the excess water originated by steam condensation.

Excellent thermal exchange and very accurate control of the injected steam ensure that the product is gently treated to preserve its nutritional and organoleptic features

Design and features

Layout: Modular and compact skid-mounted units on height-adjustable feet, with built-in power and control switchboard contained in a stainless-steel cabinet.

Heat exchangers: Modular tubular heat exchangers, available in various configurations to meet the widest range of process requirements of most liquid and low-viscosity food products. The heat exchangers module features heat-insulated, stainless-steel, safety panels and polycarbonate windows to protect the operators against the contact with hot surfaces.

Automation: High end automation allowing the continuous monitoring of all process parameters thus guaranteeing reliable performance. PLC-based controls with possibility of integration with the existing plant control system.

Materials

Parts in contact with the product AISI316L
Control cabinet AISI 304
Skid, frames and supports AISI 304
Gaskets in contact with the product EPDM or Silicone
Pumps’ mechanical seals C/SiC/EPDM
Surface finish Ra ≤ 0,8 µm

Options

Homogeniser: Aseptic, high-pressure homogeniser, to evenly disperse the fat globules and/or fine solid particles contained in the product, to reduce the risk of phase splitting and sedimentation in the packages.

Aseptic tank: Buffer tank to serve the aseptic filler while maintaining the sterility of the product.
Product’s sterility is guaranteed through the steam-sterilisation of the tank prior to the introduction of the product. The overpressure prevents then the entry of contaminants from the outside.
The tank is provided with agitation system to keep the product stirred and guarantee the homogeneity.
Aseptic tanks can also be offered as an individual equipment and designed to be operated separately from the UHT line in a fully automated mode.

Deaerator: Vacuum deaerator, to be integrated in the UHT skid; it allows the removal from the product of undesirable gases causing unpleasant odour and oxidation. The aromatic fractions that are also separated, can be recovered through condensation and reintroduced into the product.

Documents

Operating principle

UHT treatments are carried out in different ways, according to the nature of the product to be subjected to sterilisation. INOXPA offers:

  • Indirect heating UHT solutions, through tubular heat exchangers.
  • Direct heating UHT solutions, through tubular heat exchangers for heat recovery and steam injection for product sterilisation.


The heating of the product occurs in tubular heat exchangers designed to offer high thermal efficiency and optimum cleanability to ensure long operation which stands for increased plant availability.

In direct heating plants, the product is firstly heated by heat recovery in the tubular heat exchanger, while the sterilisation temperature is achieved by steam injection followed by flash cooling to remove the excess water originated by steam condensation.

Excellent thermal exchange and very accurate control of the injected steam ensure that the product is gently treated to preserve its nutritional and organoleptic features

Materials and Options

Parts in contact with the product AISI316L
Control cabinet AISI 304
Skid, frames and supports AISI 304
Gaskets in contact with the product EPDM or Silicone
Pumps’ mechanical seals C/SiC/EPDM
Surface finish Ra ≤ 0,8 µm

Homogeniser: Aseptic, high-pressure homogeniser, to evenly disperse the fat globules and/or fine solid particles contained in the product, to reduce the risk of phase splitting and sedimentation in the packages.

Aseptic tank: Buffer tank to serve the aseptic filler while maintaining the sterility of the product.
Product’s sterility is guaranteed through the steam-sterilisation of the tank prior to the introduction of the product. The overpressure prevents then the entry of contaminants from the outside.
The tank is provided with agitation system to keep the product stirred and guarantee the homogeneity.
Aseptic tanks can also be offered as an individual equipment and designed to be operated separately from the UHT line in a fully automated mode.

Deaerator: Vacuum deaerator, to be integrated in the UHT skid; it allows the removal from the product of undesirable gases causing unpleasant odour and oxidation. The aromatic fractions that are also separated, can be recovered through condensation and reintroduced into the product.

Document № FTsolUHT_ES
Title UHT Esterilización de alimentos líquidos y de baja viscosidad
File type .pdf
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Document № FTsolUHT_EN
Title UHT Sterilisation of liquid and low-viscosity food products
File type .pdf
    Download
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Document № FTsolUHT_FR
Title UHT Stérilisation des aliments liquides et à faible viscosité
File type .pdf
    Download
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Document № FTsolUHT_IT
Title UHT Sterilizzazione di prodotti liquidi e a bassa viscosità
File type .pdf
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Document № FTsolUHT_DE
Title UHT Sterilisation von flüssigen Lebensmitteln und Lebensmitteln mit geringer Viskosität
File type .pdf
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Document № FTsolUHT_RU
Title УВТ Стерилизация жидких и маловязких пищевых продуктов
File type .pdf
    Download
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