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Falling Film Wastewater MVR Evaporator System For Crystallization & Chemical Desalination
Engineer-to-order falling film MVR (Mechanical Vapor Recompression) evaporator for wastewater concentration, chemical desalination, and salt crystallization. Thin-film vacuum boiling protects heat-sensitive streams while MVR recycles latent heat, delivering low OPEX, deep TDS reduction, and continuous, stable operation for ZLD schemes.
Key Benefits
High energy efficiency: Electric-driven vapor recompression minimizes fresh steam after start-up.
Desalination & crystallization: Drives brine to supersaturation for salt recovery and reduced discharge.
Low ΔT, high quality: Falling-film duty preserves organics and limits thermal degradation/foaming.
Scaling mitigation: Optimized ΔT/LMTD and film distributors, antiscalant dosing, CIP-ready design.
Automated uptime: PLC/HMI recipes, alarms, historian, and remote diagnostics for 24/7 operation.
Process & Thermal Economy
Secondary vapor is mechanically compressed to elevate saturation temperature and reused as the heating medium. Even film distribution over vertical exchangers maintains high heat-transfer coefficients; controlled residence time and pressure/ΔT setpoints enable predictable desalination and crystallization with low specific energy.
Materials & Cleanability
Wetted parts in SS316L/duplex (Ti/Hastelloy optional). Drainable layouts, large access for inspection, validated CIP, and elastomer/material selections per chemistry (chlorides, solvents, acids/alkalis).
Process Overview — Wastewater Desalination to Crystals
Feed conditioning: screening/filtration, softening or pH trim, antiscalant to control Ca/Mg/Si scaling.
PLC/HMI/SCADA; instruments (T/P/flow/cond/level); CIP and antiscalant dosing
Performance & Sizing
Parameter
Typical Range*
Operation
Continuous, vacuum
Electric use (MVR)
~15–40 kWh per ton of water evaporated
Shell pressure
~6–25 kPa(abs), duty-dependent
Desalination depth
Up to crystallization/solid discharge (feed-dependent)
Materials
SS316L / duplex; Ti/Hastelloy on request
*Actual performance depends on feed salinity/COD, fouling tendency, compression ratio, and crystallizer design.
FAQ
Can it follow membranes to reach ZLD?
Yes—common flowsheets pair RO/NF pre-concentration with falling-film MVR and a crystallizer for final solids discharge.
How do you control scaling on high-TDS streams?
Through pretreatment, optimized film ΔT/velocity, antiscalant dosing, and scheduled CIP with online fouling indicators.
What condensate quality is achievable?
Low conductivity/TOC suitable for reuse after polishing; quality guards ensure compliance with site limits.
Application
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Ecer Certification:
Verified Supplier
Jiangsu Hanpu Mechanical Technology Co., Ltd. is a project engineering company jointly established by Jiangsu Zhongyi Environmental Technology Co., Ltd., FERREO A/S in Denmark, Shanghai Jiaotong University and Nanjing Kingreat Machinery Co., Ltd. The company's production base is located in the H... Jiangsu Hanpu Mechanical Technology Co., Ltd. is a project engineering company jointly established by Jiangsu Zhongyi Environmental Technology Co., Ltd., FERREO A/S in Denmark, Shanghai Jiaotong University and Nanjing Kingreat Machinery Co., Ltd. The company's production base is located in the H...