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FRP Piping Systems for FGD

FRP piping systems in FGD plants include all pipes, fittings and flanges carrying process liquids, slurries and flue gas. These systems encompass slurry feed lines, absorbent reagent piping, recycle lines and scrubber wash-down lines. Made from fiberglass-reinforced plastic, FRP piping combines a non-corroding resin with structural glass fibers, giving outstanding corrosion resistance. FRP pipes are available in custom sizes and can be supplied as dual-laminate (thermoplastic-lined) or pure FRP depending on the service.

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Key Features

  • Composite Strength: High strength-to-weight ratio; structurally robust yet lighter than steel.
  • Corrosion Barrier: Thick resin-rich internal liner (vinyl ester or epoxy) for chemical durability.
  • Smooth Interior: Reduces buildup and pressure drop, improving flow.
  • Versatile Materials: Options include FRP, FRVE (vinyl ester), GRP, or fluoropolymer linings.

Benefits

  • Low Maintenance: FRP rarely needs recoating; smooth walls avoid scaling.
  • Long Service Life: Decades of operation in corrosive environments without loss of integrity.
  • Easy Installation: Light pipes and fittings with flanged or grooved joints speed assembly. Flexible configurations – straight runs, bends, reducers – easily fabricated.

Applications

  • Internal spray header piping and nozzles.
  • Recirculation lines connecting absorber to process tanks.
  • Slurry transfer pipelines, drain lines and tank connections.
  • Lime dissolution and reagent dosing lines.
  • External stack recirculation loops.

Technical Specifications

  • Standards: ASTM D2996 filament-wound FRP pipe or hand-lay; ASME Section IX welding for filaments; ANSI flanges.
  • Diameter Range: Typically 1″ to 60″ (large-diameter field-wound).
  • Pressure Rating: Up to 150–300 psi (sizes and laminate dependent).

Unique Selling Points

We provide engineered FRP piping for entire FGD projects. Our solutions include precision-formed bends and large-diameter spool pieces. For aggressive chemistries, we offer dual-laminate systems (FRP shell with a PP/PVDF liner) for Thermoplastic-Lined FRP Piping (see next section). As RPS Composites notes, FRP pipes combine durability with lightweight ease-of-handling, making them ideal for complex FGD piping networks.