Stainless Steel MVR Evaporator For Food Chemical And Environmental Applications
Engineer-to-order Mechanical Vapor Recompression (MVR) evaporator built in food-grade stainless steel (SS316L/duplex options) for food & beverage, fine chemicals, and environmental duties including ZLD. Operating under vacuum, the system recompresses secondary vapor as the primary heat source to deliver low OPEX, stable throughput, and high-quality condensate suitable for reuse or further polishing.
- Hygienic design: food-contact materials, drainable layouts, smooth finishes, optional CIP/SIP
- Automatic operation: PLC/HMI recipes, alarms, historian, remote diagnostics; 24/7 continuous duty
- Energy efficiency: minimal fresh steam after start-up; electric-driven vapor recompression
- Site customization: power (380–480 V LV / 3.3–11 kV MV), utilities, layout, effluent/product specs
- Energy Savings: Mechanical vapor recompression recycles latent heat, cutting steam demand and OPEX.
- Product Quality: Falling film/forced circulation operation ensures stable concentration and crystal control.
- Versatility: Suitable for food-grade, chemical, and environmental wastewater/ZLD applications.
- Reliability: Continuous 24/7 operation with redundancy, CIP-ready design, and low downtime.
- Sustainability: High-quality condensate recovery reduces freshwater demand and supports environmental compliance.
Secondary vapor is mechanically compressed to raise its saturation temperature and recycled as the heating medium, maximizing latent heat recovery, lowering utility bills, and reducing environmental load.
Closed-loop control of level, ΔT, pressure, and conductivity; interlocks for compressor/VFD, vacuum system, and condensate quality guard. Optional power-quality mitigation (AFE/filters) for compliance.
Wetted parts in SS316L/duplex (Ti/Hastelloy on request), food-contact seals and gaskets, anti-scale dosing, and validated CIP for long, stable campaigns and fast turnarounds.
- Feed conditioning: filtration/softening, pH trim, deaeration to limit scaling/corrosion
- MVR evaporation (vacuum): forced circulation with tight ΔT control for stable heat transfer
- Condensate management: polishing (if required) to meet reuse/discharge limits
- Concentrate routing: to crystallizer/centrifuge/dryer for solids or recycle per flowsheet
- Automation: start/stop recipes, VFD load following, alarm interlocks, remote support
- MVR evaporator/crystallizer body with circulation pumps and vapor–liquid separator
- Mechanical vapor compressor (turbo/Roots) with VFD and inlet filtration/silencing
- Main heater, preheaters, condensers, vacuum/NCG handling skid
- PLC/HMI/SCADA, instrumentation (T/P/flow/cond/level), historian & remote access
- CIP skid; anti-scale dosing; optional condensate polishing filters/RO
| Parameter | Typical Range* |
|---|---|
| Operation | Continuous, 24/7 |
| Electric use (MVR) | ~15–40 kWh per ton of water evaporated (duty/CR dependent) |
| Fresh steam demand | Very low after start-up (backup/ancillary only) |
| Turndown | 50–100% with stable ΔT and quality |
| Availability | ≥95–98% with redundancy and planned CIP |
| Condensate quality | Low conductivity/TOC (with polishing as required) |
| Materials | SS316L / duplex; Ti/Hastelloy on request |
*Actual performance depends on feed characteristics, compression ratio, and heat-transfer design.
Yes. Common flowsheets pair RO/NF pre-concentration with MVR for final concentration/crystallization and solid handling.
Absolutely. Stainless steel construction, drainability, hygienic design, and validated CIP/SIP support HACCP/ISO programs.
Proper softening/pH control, optimized LMTD/velocity, anti-scale dosing, and scheduled CIP cycles with online monitoring.
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