Jiangsu Hanpu Mechanical Technology Co., Ltd
Jiangsu Hanpu Mechanical Technology Co., Ltd
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Produce high-purity edible salt with a continuous, energy-efficient line that integrates brine purification, MVR evaporative crystallization, centrifugation, drying, sizing, iodization, and packaging.
MVR compresses secondary vapor and recycles it as the heating medium, recovering latent heat and cutting utilities while maintaining crystal quality and throughput. Designed for food and chemical plants seeking predictable OPEX and stable output.
Typical electric consumption ~15–40 kWh per ton of water evaporated (design-dependent), with very low fresh steam after start-up.
Forced-circulation crystallization with controlled supersaturation delivers tight size distribution and high clarity.
316L/duplex materials, smooth finishes, drainability, CIP validation, and documentation to support HACCP/ISO programs.
Design inputs: raw salt/brine quality, target NaCl grade, grain size bands, campaign length, utilities, ambient, and hygiene requirements.
| Parameter | Typical Target / Range* |
|---|---|
| NaCl (dry basis) | ≥ 99.2% (up to 99.7% with enhanced purification) |
| Moisture (final product) | ≤ 0.2% (grade-dependent) |
| Insolubles | ≤ 0.05% (with proper brine polishing) |
| Crystal size options | Fine 0.2–0.5 mm; Table 0.5–1.2 mm; Coarse 1.2–2.5 mm |
| Line capacity (product salt) | 5–500 t/day (modular trains) |
| Electric use (MVR) | ~15–40 kWh per ton of H₂O evaporated |
| Campaign length | ≥ 10–20 days between CIP (feed-dependent) |
| Criterion | MVR Evaporation Line | Multi-Effect (MEE) | TVR |
|---|---|---|---|
| Fresh Steam Dependence | Very low (mostly electric) | Medium–High | Medium |
| Crystal Size Control | Excellent with FC crystallizer | Good (more effects needed) | Fair |
| OPEX Stability | High (predictable electric cost) | Variable (steam price/availability) | Variable |
| Start/Stop & Load Following | Good | Fair | Fair |
| Total Cost of Ownership | Medium–High (shorter payback) | Medium | Medium |
Brine: 24–26 wt% NaCl after purification → Target: refined table salt with 0.5–1.2 mm grain size.
Train: MVR forced-circulation crystallizer + peeler centrifuge + fluid-bed dryer + sieving + inline iodization + packing.
Takeaways: low fresh steam demand, electric-driven evaporation, continuous recycle of mother liquor, stable product quality, long campaigns between CIP.
How is scaling controlled?
Proper brine softening (Ca/Mg removal), filtration, and controlled ΔT/velocity minimize scale; CIP restores peak heat transfer.
Can we dose iodine and anti-caking?
Yes—inline dosing and mixing are standard, with precise control to meet local regulations.
What crystal sizes can you supply?
Fine, table, and coarse grades via sieving/polishing; multi-grade packaging available.
What materials are used?
SS316L or duplex for wetted parts; titanium/Hastelloy available for corrosives or special duties.
Can the line integrate with ZLD or membranes?
Absolutely—common flowsheets pair brine purification and RO/NF with MVR crystallization for best energy bala