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Falling Film Multiple-Effect Evaporator Equipment for Effluent Treatment
A modular MEE falling/thin-film system for concentrating industrial effluents and enabling vacuum crystallization or water reuse. Optimized for steam economy, small footprint, and continuous, automated operation across paper-making wastewater, salt-making brines, and diverse industrial streams.
Lower Utilities
Each effect reuses the previous effect’s vapor as heating medium, drastically reducing fresh steam per kg water evaporated.
Clean Operation
Closed, vacuum operation with mirror-polished tubes mitigates fouling and simplifies CIP.
Modular & Maintainable
Skid sections and accessible piping shorten installation and maintenance windows.
Process Description — Parallel-Flow Example
Feed enters the first-effect circuit, mixes with circulating liquor, and is heated with live steam in heater H. In evaporator V1, water vaporizes at its boiling point. The liquor then passes to the lower-pressure second effect, where first-effect vapor becomes the heat source. This staged reuse continues across effects, sized per boiling point elevation, allowable ΔT, and duty—maximizing thermal efficiency and minimizing OPEX.
Structure
First/second/third-effect heaters & separators, pre-heaters, terminal condenser, vacuum package, feed/circulation/discharge/condensate pumps, and full instrumentation (vacuum, temperature, pressure, flow, level). Optional TVR or MVR modules can further reuse secondary vapors.
Key Characteristics
Evaporation rate: 500 kg/h to 80 t/h.
Materials: SS304 or SS316L (others on request).
Vacuum, low-temperature operation: Short residence time; gentle to heat-sensitive components.
Custom process trains: Configured per feed chemistry, BPE, and client utilities.
Applications
Effluent concentration and reuse in paper-making, chemical & pharmaceutical, textile/dyeing, food & beverage, breweries, automotive; RO reject concentration; salt recovery via vacuum crystallization; ZLD pretreatment.
Typical Three-Effect Falling Film Evaporator — Specifications & Technical Parameters
Parameter / Specifications
HP-3.0
HP-4.5
HP-6.0
HP-9.0
HP-12.0
HP-15
HP-20
HP-24
HP-30
HP-50
Evaporation capacity (kg/hr)
3000
4500
6000
9000
12000
15000
20000
24000
30000
50000
Consumption of raw steam (kg/hr)
900
1350
1800
2700
3600
4500
4500
7200
9000
15000
Vacuum degree of each effect
First Effect
0
Second Effect
448
(mmHg)
Third Effect
640
Evaporation temperature of each effect
First Effect
99
Second Effect
76
Third Effect
53
Steam pressure for evaporation (MPa)
0.6–1.0 (Absolute pressure)
Solid content in feed (%)
6–7 (example)
Solid content outlet (%)
42–48 (example)
Performance Comparison for Different Evaporators
Item
Single-Effect Evaporator
Multi-Effect Evaporator
TVR Evaporator
MVR Evaporator
Energy consumption
Energy consumption is much higher than others; in theory, 1 ton water consumes 1 ton steam.
Comparatively energy-conserving versus single effect.
Based on traditional multi-effect with one more effect added; requires higher-pressure steam for driving.
The most energy-saving option for evaporators overall, but requires ~10–40 kW electric power for compressor.
Floor space
Small
Large
Large
Small
Energy sources
Steam & power; needs steam pipe network and boiler.
Steam & power; needs steam pipe network and boiler.
Steam & power; needs steam pipe network and high-pressure steam.
Electricity-driven; no large steam network needed, close-loop circulation system.
Automaticity
Semi-automatic
Full automatic operation, continuous evaporation
Full automatic operation, continuous evaporation
Full automatic operation, continuous evaporation
Working Principle Chart
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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...