Duplex stainless steel DSS2205 MVR horizontal-tube evaporator engineered for NaCl brine concentration and crystallization at a nominal 5 t/h water removal. Mechanical Vapor Recompression (MVR) recycles latent heat to minimize steam consumption while horizontal calandrias provide robust heat transfer for saline, scaling-prone service.

• Corrosion & stress resistance: DSS2205 duplex resists chloride stress corrosion cracking better than 304/316L.
• Energy saving: Electric-driven MVR duty delivers low OPEX and small utility footprint.
• Scaling mitigation: High-velocity circulation across horizontal tubes maintains coefficients and limits deposition.
• Crystal quality: Controlled supersaturation/residence time supports tight NaCl PSD and low moisture.
• Continuous automation: PLC/HMI recipes, alarms, historian, and remote diagnostics for 24/7 uptime.

Clarified brine is concentrated under vacuum. The MVR compressor elevates vapor temperature/pressure and reuses it as the primary heating medium in the horizontal-tube calandria. Optimized ΔT/LMTD, circulation rate, and slurry density stabilize supersaturation for predictable NaCl crystallization at low specific energy.

Wetted parts: DSS2205 (UNS S32205/S31803). Options: super duplex, SS316L, or Ti for special chemistries. Drainable layouts, smooth finishes, and CIP provision support long campaigns and fast turnarounds.

• Brine purification: dissolver → softening (Ca/Mg removal) → clarification/filtration → polishing.
• MVR evaporation (vacuum): horizontal tubes with forced circulation; compressor sets ΔT and capacity.
• Crystallization: seeded growth; slurry density and residence time govern PSD and purity.
• Solid–liquid separation: pusher/peeler centrifuge; mother liquor recycle.
• Drying & sizing: fluid-bed/vibratory drying → sieving; optional iodization/anti-caking.

• DSS2205 horizontal-tube heater (straight/U-tube bundle) with vapor–liquid separator
• MVR compressor (turbo/Roots) with VFD for ΔT/capacity control
• Preheaters, surface condenser, vacuum/NCG handling skid
• Crystallizer with slurry density control; centrifuge; dryer; screeners
• PLC/HMI/SCADA; instruments (T/P/flow/conductivity/level); CIP skid & antiscalant dosing

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