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Falling Film Mvr Vacuum Evaporator

Multi Effect Mvr Vacuum Evaporator

Stainless Steel 304 Mvr Evaporator

Basic Infomation

Place of Origin: Jiangsu,China

Brand Name: HANPU

Certification: ISO9001,CE

Model Number: MVR

Payment & Shipping Terms

Packaging Details: Bulk with includes fixtures

Delivery Time: 3 months

Payment Terms: T/T,L/C,D/A,D/P

Supply Ability: 1 set/90days

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Multi Effect Mvr Falling Film Vacuum Evaporator Sodium Chloride Salt Line

Product Description

Multi Effect MVR Falling Film Vacuum Evaporator Sodium Chloride Salt Line

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.

Key Benefits

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.

Process & Thermal Economy

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 Δ T/LMTD, residence time, and recirculation stabilizes supersaturation for repeatable NaCl crystallization and low OPEX.

Materials & Hygiene

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

Process Overview -- Refined NaCl Line

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.

Key Components

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 & Sizing

Parameter	Typical Target / Range*
NaCl purity (dry)	≥ 99.2% (up to 99.7% with enhanced purification)
Moisture (final)	≤ 0.2% (grade-dependent)
Crystal sizes	Fine 0.2-0.5 mm; Table 0.5-1.2 mm; Coarse 1.2-2.5 mm
Line capacity	5-500 t/day (modular trains)
Electric use (MVR)	~15-40 kWh per ton H₂O evaporated
Fresh steam demand	Very low after start-up (backup/ancillary only)
Campaign length	≥ 10-20 days between CIP (feed-dependent)

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

FAQ

Why combine multi-effect with MVR?
The hybrid layout merges the low utility demand of MVR with the thermal economy of MEE, balancing CAPEX and OPEX.

Can you supply food-grade documentation?
Yes--material traceability, surface finish records, and CIP validation support HACCP/ISO 22000 programs.

What product grades are supported?
Fine, table, and coarse salt with optional iodization and anti-caking, plus industrial grades on request.

Application

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Contact Person :	Mr. Jim(General Director)
Tel :	+8613962270688
Fax :	86-512-58797983

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