Key Features
- FRP Shell: Provides structural support and rigidity for the tank.
- Thermoplastic Liner: A homogeneously welded plastic layer (typically 3–10mm thick) resisting extreme chemicals.
- Full Bonded Construction: FRP and liner are bonded with a special adhesive for leak-proof integrity.
- Factory or Field Lining: Liners can be prefabricated panels or field-welded on larger tanks.
Benefits
- Ultimate Corrosion Protection: Can handle strong acids, alkalis or chloride-rich slurries that would attack even vinyl ester FRP.
- Simplified Maintenance: The plastic liner is inherently smooth; no coatings required. If damaged, liners can be repaired independently.
- Cost-Efficient: Compared to building a full thermoplastic tank, the FRP exterior reduces cost while delivering high corrosion resistance.
Applications
Used where slurries contain aggressive chemicals – for example, high-concentration hydrochloric acid scrubber slurries or seawater FGD applications with seawater and limestone. Also used for waste neutralization tanks in FGD water treatment. The dual-laminate design meets stringent emission guidelines by preventing any leakage of toxic liquids.
Technical Specifications
- Materials: Liners commonly are polypropylene (PP-H or PP-H 100% virgin), PVDF, or PVC.
- Standards: Lined vessels often comply with ASME RTP-1 or ISO 14692 for composite pressure vessels.
- Quality Assurance: Leak testing (air or vacuum box) is performed on liner seams.
Unique Selling Points
We specialize in thermoplastic-lined tanks for the toughest FGD services. Our partnership with experts (e.g. Steuler-KCH glass flake liners) allows us to offer PP/PVDF liners up to 10m diameter. By integrating liners with FRP support, we deliver tanks that withstand chemical attack far beyond conventional FRP, giving plants a safe, long-lasting solution.