Engineer-to-order multi-effect falling film evaporator integrated with MVR (Mechanical Vapor Recompression) for sodium chloride (NaCl) refining lines. Operating under vacuum, the hybrid MEE+MVR train achieves high thermal efficiency, precise supersaturation control, and continuous crystal quality for edible and industrial salt production.

• Energy efficiency: MVR recycles latent heat; multi-effect staging lowers specific energy use and fresh steam demand.
• Crystal quality: Controlled nucleation/growth delivers narrow size distribution for table, fine, or coarse grades.
• Stable vacuum duty: Falling film with low ΔT preserves heat-transfer coefficients and limits fouling.
• Food-grade compliance: 316L/duplex materials, drainability, CIP-ready design supporting HACCP/ISO.
• Line integration: Seamless tie-in with brine purification, centrifugation, drying, sizing, iodization, and packing.

Secondary vapor is mechanically recompressed and reused as the primary heating medium, while upstream/downstream multi-effect falling film effects cascade energy. Tight control of ΔT/LMTD, residence time, and recirculation stabilizes supersaturation for repeatable NaCl crystallization and low OPEX.

Wetted parts in SS316L/duplex (Ti/Hastelloy on request), sanitary finishes, sloped/drainable piping, validated CIP, and material traceability for food-contact applications.

• Brine make-up & purification: dissolving, softening (Ca/Mg removal), clarification/filtration, polishing.
• Multi-effect + MVR evaporation (vacuum): staged effects with recompressed vapor to drive heat duty.
• Crystallization control: supersaturation setpoints for target grain bands (fine/table/coarse).
• Solid–liquid separation: peeler/pusher centrifuge; mother liquor recycle.
• Drying & sizing: fluid-bed/vibratory drying; sieving/polishing to spec; optional iodization & anti-caking.
• Packing: retail (1 kg) to bulk (25–50 kg) with weight checks and metal detection.

• Multi-effect falling film evaporator bodies with preheaters/condensers
• MVR compressor (turbo/Roots) with VFD for ΔT/capacity control
• Vapor–liquid separator, main heater, vacuum/NCG handling system
• Brine purification skid (dissolver, softening, clarification, filtration)
• Peeler or pusher centrifuge; fluid-bed/vibratory dryer; sieving/polisher
• PLC/HMI/SCADA, instrumentation (T/P/flow/cond/level), historian & remote access
• CIP skid; iodization and anti-caking dosing modules

*Performance depends on feed composition, scaling tendency, compression ratio, and heat-exchange area.