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Define a fruit-concentrate finishing duty from measured rheology, pulp content, temperature history and product-quality requirements.
Describe the fruit preparation, upstream concentration step and desired final product. A finishing loop may be evaluated when rising viscosity or suspended material changes the upstream process limit. Establish that limit with measurements rather than selecting equipment from the fruit name.
Include the effect of repeated pump passes and circulating inventory in the quality review. Agree colour, flavour or other relevant acceptance criteria and the conditions under which samples will be taken. Record viscosity at final concentration and process temperature.
Review whether the concentrated product can be withdrawn, transferred and drained under the intended conditions. Supply pulp or fibre information and a cleaning basis. Confirm how upstream variability reaches the finishing stage.
Keep the loop moving. The circulation pump sets the flow through the heater. That flow is distinct from the incoming feed and from the mass of water evaporated. Selection must follow the concentrated liquid throughout the planned operating range, including start-up and restart after cooling.
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Control the product leaving the loop. Withdrawal and fresh feed must remain consistent with the water-removal duty and circulating inventory. The discharge equipment is selected for final concentrate properties, which may differ substantially from feed properties.
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Observe the limits; validate the clean. A useful control philosophy connects each process risk to a measurement and response. Loss of circulation, feed interruption or a changing vacuum needs a defined action. The cleaning boundary must include the pump and every product-contact part of the loop.
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