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High-Efficient Double-Effect Crystallization System for Multiple Salts
Hanpu designs and supplies double-effect evaporation & vacuum crystallization systems for multi-salt applications such as NaCl, KCl, (NH4)2SO4, Na2SO4, sodium acetate, and mixed brines. Our compact two-effect layout delivers strong energy savings, precise crystal size control, and reliable operation for both new plants and brownfield upgrades.
Technology Parameters
Model
DE-500
DE-1000
DE-1500
DE-2000
Evaporation (kg/h)
500
1000
1500
2000
Steam Consumption (kg/h)
≤250
≤500
≤750
≤1000
Dimensions L×W×H (m)
4×1.5×3.3
5×1.6×3.5
6×1.6×3.7
6.5×1.7×4.3
Cycle Water Consumption (t/h)
6
12
15
18
Operating Ranges (common to all models)
Evaporation Temperature — First Effect (°C)
80–90
Evaporation Temperature — Second Effect (°C)
55–70
Vacuum — First Effect (MPa)
0.02–0.04
Vacuum — Second Effect (MPa)
0.05–0.06
Steam Pressure (MPa)
<0.25
Concentration Ratio
1.2–1.3
Energy Efficiency
Typical steam economy of ~1.8–2.2 kg water/kg live steam (higher with TVR), cutting utility cost vs. single-effect systems.
Crystal Quality
Tight control of supersaturation, magma density, residence time, and seeding to hit target PSD and purity.
Low Fouling & Easy CIP
Optimized velocities and heat flux reduce scaling on heat surfaces; automated CIP quickly restores U-value.
Flexible to Multiple Salts
Process recipes switchable for chloride, sulfate, phosphate, and acetate systems; compatible with upstream RO/NF and downstream centrifuges/dryers.
How the Double-Effect Crystallization Works
Preheat & Deaerate: Feed is preheated using condensate/flash vapors; non-condensables removed to stabilize boiling points.
Effect 1 (Higher T/P): Falling-film or forced-circulation evaporation raises concentration near the metastable zone.
Performance figures are indicative. Final design is confirmed by laboratory data, BPE/viscosity curves, corrosion/scaling assessment, and site utility conditions.
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...
