Jiangsu Hanpu Mechanical Technology Co., Ltd
Jiangsu Hanpu Mechanical Technology Co., Ltd
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Engineer-to-order MVR (Mechanical Vapor Recompression) evaporator for ZLD wastewater trains. The system recycles latent heat via mechanical recompression to minimize utilities, while a PLC control engine orchestrates continuous, unattended operation—delivering low OPEX, high recovery, and compliant discharge as solids.
Secondary vapor is mechanically compressed to elevate saturation temperature and reused as the heating medium. Tight control of pressure, ΔT, circulation rate, and residence time keeps coefficients high and specific energy low, producing condensate suitable for reuse after polishing.
Closed-loop control of level/pressure/temperature/conductivity; interlocks for compressor/VFD, vacuum and NCG handling, heater duty, and condensate quality guard. Event/alarm historian and secure remote support enable 24/7 uptime.
| Parameter | Typical Range* |
|---|---|
| Operation | Continuous, 24/7 (vacuum duty) |
| Electric use (MVR) | ~15–40 kWh per ton of water evaporated |
| Fresh steam demand | Very low after start-up (backup/ancillary only) |
| Turndown | 50–100% with stable ΔT and quality |
| Materials | SS316L / duplex; Ti/Hastelloy on request |
*Actual performance depends on feed salinity/COD, fouling tendency, compression ratio, and heat-exchanger design.
Yes. RO/NF pre-concentration upstream with MVR + crystallizer downstream is a standard ZLD configuration.
Through pretreatment, optimized ΔT/LMTD and velocity, antiscalant dosing, and scheduled CIP based on fouling indicators.
Low conductivity/TOC; polishing enables reuse within the plant, reducing freshwater intake.