Flue gas desulfurization refers to the process of removing sulfur oxides (SO₂ and SO₃) from flue gas or other industrial waste gases. This technology plays a crucial role in controlling environmental pollution and improving air quality. However, flue gas desulfurization systems face corrosion issues during long-term operation. Therefore, effective anti-corrosion measures are essential.
I. Overview of Construction Methods
The glass flake resin anti-corrosion material consists of dispersed glass flakes mixed with a viscous resin to form a paste-like composite. The application process resembles building plastering. Workers use trowels and scrapers to apply the material to the protected surface at the required thickness. After applying, they remove bubbles and compress the material to arrange the glass flakes in a specific direction, allowing it to cure and set. The differences in properties between resin and cement materials make the application more challenging.
II. Main Characteristics of Construction
- Manual Operation: The application of glass flake resin is manual. The quality of the work largely depends on the skills and proficiency of the workers.
- Surface Quality Control: The quality of the anti-corrosion layer, the arrangement of glass flakes, and the thickness depend on the worker's technical level and experience.
- Sealing Requirements: The glass flake anti-corrosion layer must be completely sealed, especially at ends, joints, and corners. To prevent stress concentration and misalignment of flakes, reinforcing measures such as glass cloth should be used.
- Mixing Equipment: Mixing equipment should be available during construction to minimize the formation of air bubbles.
- Safety Protection: The working environment for glass flake resin is harsh and poses fire and health hazards. Therefore, safety measures are crucial.
III. Structural and Surface Requirements for the Protected Metal Shell
- Strength and Rigidity: The protected metal shell must possess sufficient strength and rigidity to prevent damage to the anti-corrosion layer during transport, installation, and construction.
- Construction Conditions: The structure of the metal shell must meet construction requirements and allow for manual application.
- Welding Requirements: All structural components that require welding (or riveting) must be completed before construction. If welding is necessary afterward, appropriate measures must be taken. All external pipeline flanges should be open, and the equipment must pass inspection according to design specifications.
- Maintenance Conditions: Equipment that contains internal components and requires frequent maintenance must be suitable for installation and repair without damaging the lining.
- Welding Structure: The metal shell should primarily use welded structures. If riveting is necessary due to special circumstances, countersunk rivets should be used.
- Surface Treatment: The surfaces of the metal shell must be clean and smooth, free of weld slag and burrs. Welded areas should be flat, with protrusions not exceeding 1mm. If they exceed this height or are rough, they should be ground down with a grinder.
- Sandblasting: The metal shell must undergo strict sandblasting and rust removal.
- Pre-Construction Completion: All processing, welding, pressure tests, and leak tests must be completed before construction. After construction, no welding is allowed on the shell.
By following these measures, we can effectively enhance the anti-corrosion performance of flue gas desulfurization systems, extend the equipment's lifespan, and ensure the safe and stable operation of the system.
Contact Us
If you have any questions about the anti-corrosion measures for flue gas desulfurization systems or other related products, please feel free to contact us. Darko is dedicated to providing high-quality anti-corrosion solutions to help businesses achieve sustainable development.
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