5T/H Stainless Steel MVR Evaporator Oslo Crystallizer Used In NaCl Indutries

Basic Properties

Place of Origin: China

Brand Name: Hanpu

Certification: CE ISO

Model Number: MVR

Trading Properties

Minimum Order Quantity: 1set

Price: USD180,000-USD650,000

Supply Ability: 1sets per 3 months

Multi Effect MVR evaporator system

Stainless Steel Oslo Crystallizer

5 T/H Stainless Steel MVR Evaporator

MVR Evaporator Oslo Crystallizer

Product Description

5T/H Stainless Steel MVR Evaporator Oslo Crystallizer Used In NaCl Industries

5 t/h stainless-steel MVR evaporator with OSLO crystallizer for NaCl production

A stainless-steel MVR (Mechanical Vapor Recompression) evaporator integrated with an OSLO (draft-tube baffle) crystallizer, engineered for NaCl brine concentration and crystal growth at a nominal 5 t/h water removal. Recompressing secondary vapor as the heating medium delivers low OPEX, stable supersaturation, and consistent salt quality for edible and industrial grades.

Key Benefits

Energy saving: Electric-driven MVR minimizes fresh steam after start-up.
Crystal quality: OSLO circulation promotes larger, well-formed NaCl crystals with narrow PSD.
Scaling control: Optimized ΔT/LMTD, high-velocity loops, antiscalant dosing, and CIP-ready design.
Food/industrial compliance: SS316L wetted parts with hygienic finishes; duplex/Ti optional for chlorides.
Continuous uptime: PLC/HMI recipes, alarms, historian, and remote diagnostics for 24/7 operation.

Process & Thermal Economy

Purified brine is evaporated under vacuum; the MVR compressor raises vapor temperature and recycles latent heat. The OSLO crystallizer operates at controlled slurry density and residence time to stabilize supersaturation and crystal growth while keeping specific energy consumption low.

Materials & Sanitary Design

Wetted parts in SS316L (duplex/SS2205 or titanium available). Drainable layouts, smooth finishes, and validated CIP support edible salt production and robust industrial service.

Process Overview -- NaCl Brine to Product

Process flow diagram for NaCl brine processing

Brine polishing: dissolver -> softening (Ca/Mg removal) -> clarification/filtration -> polishing filter.
MVR evaporation (vacuum): compressor discharge sets ΔT; shell pressure defines boiling point.
OSLO crystallization: draft-tube circulation; seed management for target crystal size and clarity.
Solid-liquid separation: pusher/peeler centrifuge; mother-liquor recycle.
Drying & sizing: fluid-bed/vibratory drying; screens/polishers; optional iodization/anti-caking.

Key Components

MVR evaporator (falling film / forced circulation) with vapor-liquid separator
Mechanical vapor compressor (turbo/Roots) with VFD for ΔT/capacity control
OSLO crystallizer with draft tube, circulation pump, and slurry density control
Preheaters, surface condenser, vacuum/NCG handling skid
PLC/HMI/SCADA; instruments (T/P/flow/conductivity/level/solids); CIP skid & antiscalant dosing

Performance & Sizing

Parameter	Typical Target / Range*
Evaporation rate	5 t/h (water removal), adjustable via compressor VFD
Operating mode	Vacuum, continuous
NaCl purity (dry)	≥ 99.2% (up to 99.7% with enhanced purification)
Crystal size bands	Fine 0.2-0.5 mm; Table 0.5-1.2 mm; Coarse 1.2-2.5 mm
Electric use (MVR)	~15-40 kWh per ton H₂O evaporated (duty/CR dependent)
Fresh steam demand	Very low after start-up (backup/ancillary only)
Materials	SS316L wetted; duplex/SS2205 or Ti optional

*Performance depends on brine composition, scaling tendency, compression ratio, and crystallizer design.

FAQ

Why choose an OSLO crystallizer for NaCl?
OSLO's draft-tube circulation supports growth of larger, uniform crystals with low fines, improving centrifuging and drying.

Can this line produce edible-grade salt?
Yes--with proper brine purification, hygienic finishes, and iodization/anti-caking dosing, edible-grade specs are achievable.

How is scaling controlled?
Softening and filtration upstream, optimized ΔT/velocity, antiscalant dosing, and scheduled CIP maintain heat-transfer rates.

Application