DL/T 901-2017 in English
VALIDAcid-resisting materials of chinmey(flue pipes)for thermal power plant
- Issued on:2017-11-15
- Implemented on:2018-03-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
Price(USD)：
$420.00
$408.00
$408.00
| Standard No: | DL/T 901-2017 |
| Document status: | VALID |
| Title in English: | Acid-resisting materials of chinmey(flue pipes)for thermal power plant |
| Title in Chinese: | 火力发电厂烟囱（烟道）防腐蚀材料 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2017-11-15 |
| Implemented on: | 2018-03-01 |
| Superseding: |
DL/T 901-2004 Acid-resting materials of chimney lining for fossil fuel power plant
|
| Professional Classification: | DL-Electricity |
| Related Topics: | flue
anti-corrosion en45545-2 material fire protection factory material chimney flue Material Corrosion Potential chimney flue Material Development Capability thermal power plant Material DL/T 5747-2017 anti-corrosion material Pressure pipeline corrosion rate Diesel generator chimney dl/t 5749-2017 mt/t 901 Chimney pipe oblique insertion dl/t 1759-2017 dl/t 1781-2017 dl/t+1746-2017 dl/t 5759-2017 dl/t1773-2017 dl/t 1779-2017 dl/t 1776-2017 dl/t 5754-2017 Material acceptance of thermal power plant dl 5448 2017 |
Introduction
Analysis of the core content of the standard
| Material category | New content | Performance improvement points | Applicable scenarios |
|---|---|---|---|
| Titanium-steel composite plate | New rolling/explosion composite process classification | Shear strength ≥140MPa | Wet desulfurization flue |
| Fiber reinforced plastics | New mechanical winding/pultrusion classification | Tensile strength ≥400MPa | Severe corrosion area |
| Foam Brick | New Bulk Density Classification | Thermal Conductivity ≤ 0.35W/(m·K) | Non-wet FGD System |
Key Technical Requirements
Acid Resistance Index
All materials must pass a 7-day immersion test in 40% sulfuric acid solution, demonstrating no corrosion and a strength retention rate of ≥80%. Organic anti-corrosion materials must also pass 10 cycles of the sulfuric acid resistance test.
Heat resistance classification
- Class I materials: 150℃×24h test
- Class II materials: 250℃×4h test
- Higher temperature can be negotiated for special working conditions
Comparison of standard evolution
Main improvements compared with the 2004 version:
- Added technical specifications for 5 types of materials including Titanium-steel composite plate
- Optimized the apparent porosity requirement of the binder (≤20%)
- Added Appendix A sulfuric acid resistance test method
Implementation suggestions
Material selection principles
| Corrosive environment | Wet desulfurization is preferredFiber reinforced plastic |
| Temperature conditions | ＞180℃, choose acid-resistant castable |
| Seismic requirements | Use elastic adhesive (elongation ≥100%) |
Acceptance points
On-site re-inspection should include:
- Volume density deviation of foam bricks ≤5%
- Organic material oxygen index ≥32
- Surface drying time of adhesive ≤1h
Sample only — not a preview of DL/T 901-2017
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