Continuous 380V 50Hz MVR Evaporator — Three-Effect Falling Film Concentration
The continuous-operation MVR evaporator with three-effect falling film configuration is engineered for industrial concentration and crystallization duties. Designed for 380V / 50Hz grids, the system integrates mechanical vapor recompression with multi-effect falling film evaporators, achieving high thermal efficiency, stable product quality, and predictable OPEX.
- Continuous duty: engineered for 24/7 operation with minimal downtime
- Electrical fit: customized for 380V / 50Hz low-voltage supply, site-compliant
- Energy saving: low fresh steam demand after start-up, mostly electric duty
- Product stability: falling film operation ensures uniform heat transfer and minimized fouling
Applications
Suitable for salt brine concentration, food liquids, pharmaceutical intermediates, high-COD wastewater, and chemical effluents where energy efficiency and consistent throughput are critical.
Three-Effect Falling Film
Each effect operates under vacuum with low ΔT; thin film improves heat transfer, reduces scaling and thermal degradation.
MVR Integration
Secondary vapor is recompressed mechanically and recycled, greatly reducing utility cost and environmental load.
Automatic Control
PLC/HMI system with level, flow, and ΔT controls ensures stable long-term operation with remote monitoring options.
Process Overview
- Feed conditioning: pre-filtration, softening, deaeration
- Three-effect falling film: staged vacuum effects provide energy cascade
- MVR compression: secondary vapor recompressed and reused as heat source
- Concentration/crystallization: product tailored to target solids or crystal grade
- Condensate handling: polished for reuse or discharge to meet compliance
Key Components
- Three-effect falling film evaporator bodies with preheaters/condensers
- MVR compressor (turbo or Roots) with VFD for load flexibility
- Vacuum/NCG handling system and vapor–liquid separators
- PLC/HMI/SCADA with historian; remote access capability
- CIP skid and anti-scaling system for extended uptime
Performance & Sizing
| Parameter | Typical Range* |
| Power supply | 380V, 50Hz (site-adaptable) |
| Operation | Continuous, 24/7 |
| Electric use (MVR) | ~15–40 kWh per ton of water evaporated |
| Fresh steam demand | Very low after start-up |
| Turndown | 50–100% with stable ΔT |
| Availability | ≥95% with CIP planning |
*Performance depends on feed characteristics, scaling tendency, compression ratio, and effect design.
FAQ
Why combine MVR with three-effect falling film?
It merges mechanical recompression efficiency with falling film’s high heat transfer, reducing CAPEX/OPEX trade-offs.
Can it run continuously on 380V 50Hz?
Yes — the system is designed specifically for low-voltage industrial grids with stable load profiles.
What industries use this setup?
Commonly used in salt, food & beverage, pharmaceuticals, and ZLD wastewater treatment.
