{"id":2681,"date":"2026-05-04T11:55:06","date_gmt":"2026-05-04T11:55:06","guid":{"rendered":"https:\/\/ftmtechnologies.com\/blog\/dairy-pasteurizer\/"},"modified":"2026-05-05T16:30:05","modified_gmt":"2026-05-05T16:30:05","slug":"dairy-pasteurizer","status":"publish","type":"post","link":"https:\/\/ftmtechnologies.com\/en\/blog\/dairy-pasteurizer\/","title":{"rendered":"Dairy Pasteurizer: Types, Operation and Key Technical Considerations"},"content":{"rendered":"\t\t
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Dairy Pasteurizer: Types, Operation and Key Technical Considerations
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The dairy industry does not process a single product, it processes an entire family of products with distinct physicochemical properties: fluid milk, cream, yoghurt bases, whey, concentrates, and cheese milk blends. Each has a different viscosity, fat content and thermal sensitivity. <\/p>

A dairy pasteurizer <\/strong>that is not dimensioned for the product it actually processes can compromise the heat treatment, affect the quality of the final product, and result in the complete loss of the batch.<\/p>

This article analyses how the industrial pasteurisation process works in the dairy sector, what types of equipment exist, which products each one handles, and what regulatory framework applies to the dairy industry.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Why Pasteurisation Matters in the Dairy Industry\n<\/h2>\t\t\t\t<\/div>\n\t\t
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Dairy products, from fluid milk to concentrates and yoghurt bases, share a common characteristic: their nutritional composition exposes them to accelerated growth of pathogenic microorganisms (bacteria, viruses, moulds).<\/p>

Pasteurisation eliminates 99.999% of that microbial load without reaching the sterilisation temperatures that denature whey proteins, destabilise fat and alter the sensory profile of the product.
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Without that treatment, no dairy derivative is viable for industrial distribution. Not from a sanitary, commercial, or legal standpoint. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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How a Continuous-Flow Dairy Pasteuriser Works
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In a continuous-flow line, the product is not heated directly or uniformly from the outset. The process is designed in sequential stages that combine thermal precision with energy efficiency.
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Heating and Heat-Holding<\/h3>

The product enters through a balance tank that regulates flow rate. It then passes into the regeneration section, where it is pre-heated by the already-pasteurised product, and from there into the heating section until it reaches the target pasteurisation temperature. The holding tube maintains that temperature for the time required to achieve the necessary microbial reduction. <\/p>

Energy Regeneration and Cooling<\/h3>

The pasteurised product transfers heat to the incoming product, recovering up to 95% of the thermal energy and then proceeds to the cooling section down to storage temperature. The differential pressure between both circuits is maintained at a minimum of 2 psi in favour of the pasteurised side, preventing any leak from compromising product safety.
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Cleaning-in-Place (CIP) System Integrated into the Process<\/h3>

The CIP conditions the equipment geometry from the initial sizing stage. A correctly integrated system cleans and sanitises all circuits without disassembly, reducing downtime and maintaining process traceability. <\/p>

If any of these stages fails to operate correctly, the product does not receive the required heat treatment and an under-pasteurised batch cannot be recovered.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Types of Pasteurisers for the Dairy Industry and Which Products Each One Handles

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The type of pasteuriser is not selected based on an individual product, but on the properties of the fluid that will circulate through the line: viscosity, fat content, presence of solids, and thermal sensitivity.
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In plants processing more than one product, the equipment is sized for the most demanding one.
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Plate Pasteuriser<\/h3>

Standard configuration for low-viscosity products with no suspended solids. Its narrow-channel design maximises heat transfer and energy regeneration. <\/p>