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Entrainment separation for forced-circulation evaporation
Protect the recovered vapour. Define its duty within the complete food-concentration circuit.
MODULE 04
Droplets leaving with the vapour represent product loss and can contaminate downstream equipment. A separation device must work with the product’s foam and fouling behaviour. The choice of internals depends on the operating envelope and cleaning access.
Enquire about this moduleInput, output and connection boundary
| Input | Output | Interfaces |
|---|---|---|
| Vapour that may contain liquid droplets or foam | Vapour with an agreed carry-over level and recovered liquid | Vessel vapour space, liquid return, condenser or heat-recovery equipment |
Specification inputs
| Parameter | Condition to state |
|---|---|
| Acceptance basis | Define condensate/product carry-over measurements and sample locations. |
| Load range | Review normal and minimum vapour rates and upset conditions. |
| Pressure loss | Include the device in the vacuum and heat-recovery pressure budget. |
| Internal access | Specify inspection, cleaning and replacement provisions. |
Maintenance access
Inspect and clean the selected internals using a validated procedure. A fouled separator can change pressure drop as well as carry-over. Make the return path for collected liquid part of the cleaning review.
Selection limit
A demister, cyclone or other device is not a universal solution for every foam or suspended-solid duty. Trials may be needed to establish acceptable separation.