GB/T 39222-2020 in English
VALIDDesign guidelines for multiple effect distillation seawater desalination system
- Issued on:2020-10-11
- Implemented on:2021-05-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
Price(USD)：
$220.00
$214.00
$214.00
《GB/T 39222-2020多效蒸馏海水淡化系统设计指南》由TC442（全国节水标准化技术委员会）归口，主管部门为国家标准化管理委员会。
Introduction
Analysis of the core content of the standard
GB/T39222-2020 stipulates the full-process design specifications for the multi-effect distillation (MED) desalination system, with the following highlights:
- Heat source utilization efficiency: the power consumption per ton of water is required to be <1.6kW·h/t, and the water production ratio range is 3-15
- Material corrosion resistance: TA1 titanium alloy, S31603 stainless steel and other materials are recommended for different media
- Pretreatment requirements: suspended matter content ≤50mg/L, petroleum ≤0.5mg/L
Comparison of key technologies
| Technical parameters | Traditional system | Optimization plan of this standard |
|---|---|---|
| Maximum brine temperature | ≤65℃ | ≤70℃ (degassing treatment required) |
| Steam thermal compression | Optional configuration | TVC is preferred |
| Brine treatment | Direct discharge | Mixed cooling seawater discharge |
Key points for the implementation of anti-corrosion technology
Take evaporator as an example:
- The heat transfer tube is made of TA1 titanium alloy, which is resistant to chloride ion corrosion
- The shell adopts S31603 stainless steel + epoxy coating for double protection
- The liquid distribution system uses PP material to prevent biological attachment
Typical case: A coastal power plant project extends the equipment life to 15 years through material optimization
System design innovation
- Modular gas-liquid separator: adopts wire mesh structure, fog collection efficiency ≥99.9%
- Dual mother pipe heating system: ensure steam supply stability
- Intelligent dosing control: antiscalant dosing accuracy ±2%
Implementation suggestions
- Coastal projects give priority to the combination of shore water intake + variable frequency water pump
- A degassing device must be equipped under high temperature conditions
- The temperature difference of concentrated brine discharge is controlled within 10℃
Sample only — not a preview of GB/T 39222-2020
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