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Catalog excerpts
![Tetra Therm®Lacta 1 - Pasteuriser unit - 1](https://img.directindustry.com/pdf/repository_di/61931/tetra-therm-lacta-1-pasteuriser-unit-605125_1m.jpg)
Tetra Therm®Lacta 1 Pasteuriser unit Application Tetra Therm Lacta 1 is a pasteuriser unit designed for continuous processing and pasteurisation of market milk, yoghurt milk and ice-cream mix. Working principle Tetra Therm Lacta is as standard equipped with semiautomatic controls. From the control panel, the operator initiates the required functions, such as starting the pumps and changing the set point on the temperature controller. The pasteurisation temperature and the position of the flow diversion valve are continuously recorded. Main process sequences can be divided into the following main steps: • Pre-sterilisation • Filling • Production / circulation • Emptying • Cleaning-In-Place Before production can commence, it is necessary to sterilise the unit by circulating hot water for 20 minutes. After presterilisation, the unit is cooled down and stabilised to production temperatures. When down-stream equipment is ready, the production can start. Production starts by filling the unit with product via the balance tank. The product displaces the water/product mix to drain or reject tank. Before being homogenised in a Tetra Alex homogeniser, the product is regeneratively pre-heated in a Tetra Plex plate heat exchanger by the outgoing pasteurised product. To ensure even heat load on the product, final heating takes place in the PHE by means of an indirect hot water circuit. The product is held in a holding tube for the required period of time. If the pasteurisation temperature gets too low, an automatic flow diversion valve, placed down-stream of the holding tube, diverts the product back to the balance tank. After the holding tube, the product is cooled by the incoming product in the regeneratice section of the PHE.
Open the catalog to page 1![Tetra Therm®Lacta 1 - Pasteuriser unit - 2](https://img.directindustry.com/pdf/repository_di/61931/tetra-therm-lacta-1-pasteuriser-unit-605125_2m.jpg)
If required, the product is further cooled by ice water in the final cooling section. After each complete production run the unit is cleaned with either the internal or external CIP-system, with both acid and lye. The operator interface is used for process monitoring and selection of required functions. On the control panel, a paper loose colour screen recorder continuously record: pasteurisation temperature, pre-sterilisation temperature and the position of the flow diversion valve. Processing parameters Standard temperature programs Inlet temperature, °C Pasteurisation temperature, °C...
Open the catalog to page 2![Tetra Therm®Lacta 1 - Pasteuriser unit - 3](https://img.directindustry.com/pdf/repository_di/61931/tetra-therm-lacta-1-pasteuriser-unit-605125_3m.jpg)
Option groups and selection of options Standard unit with fixed capacities. Main module with: Product balance tank (BTD) with level control Centrifugal productfeed pump Flow control (Mechanical flow controller or homogeni- Free-standing Tetra Plex plate heat exchanger (PHE) with cooling, regenerantive, and heating sections Holding tube, in the middle of the unit Hot water unit, incl brazed PHE, pump, steam valve and trap, expansion vessel, shut-off valves etc. Control panel in stainless steel including process con- troller (mini-PLC), operator interface (HMI), recorder solenoid valves, and...
Open the catalog to page 3![Tetra Therm®Lacta 1 - Pasteuriser unit - 4](https://img.directindustry.com/pdf/repository_di/61931/tetra-therm-lacta-1-pasteuriser-unit-605125_4m.jpg)
Additional Units The following sub-units are possible to connect to the prepared • Tetra Alfast automatic standardisation unit Tetra Therm Lacta 1. • Tetra Alex homogeniser for full or partial homogenisation • Tetra Alrox Lacta dearator 'Spiral holding cell for increased holding time • Tetra Centri separation unit Technical data Approx. consumption data for Tetra Therm Lacta, 5 000 - 20 000 l/h per 1 0001 of market milk Steam, 3 bar: 20 kg/h, peak 50 kg/h (during sterilisation) ce water, 3 bar, 2°C (outlet 7°C): 1 400 l/h during production No water consumption during pre-sterilisation...
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