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Find Your Fabric Expansion Joint by Applications

August 13th, 2012

High Temperature Dirty Flue Gas
Similar Applications: Fossil Fired Power Plant (Gas Recirculation System), Pulp and Paper Plant (Recovery Boiler to Precipitator), Refinery (Turbo-Expander to CO Boiler and CO Boiler to Precipitator), Cement Plan (Clinker Cooler to Heat Exchanger)

Typical Conditions: 650°F to 850° operating temperature, -10″ to -25″ WG pressure, fuel gas media with heavy particulate, boiler growth contributes to large axial or lateral expansion joint movements depending on the orientation of the joints

Common Design Features:

Fabric Belt: Un-insulated fabric material. (FLEXXCEL HD7)

Accumulation barrier: Fills expansion joint cavity to minimize the accumulation of particulate.

Liner: Flow liner to retain the accumulation barrier and protect the belt from abrasion.

Recommended Expansion Joint Designs: Style 200W, 100W, 300W, 600W, and 700W

Fabric Expansion Joint Movement Illustration
Turbulent Air
Similar Applications: Pulp and Paper Plant (Primary Air to Recovery Boiler)

Typical Conditions: Ambient temperature, 40″ to 50″ WG pressure, clean air movement mainly limited to vibrations

Common Design Features:

Fabric Belt: At fan locations, a flutter resistant fabric belt material should be used. (FLEXXCEL FF1)

Accumulation barrier: Bolt-in design for attachment to equipment or duct flanges.

Liner: Flow liner to reduce turbulence/flutter of fabric belt material.

Recommended Expansion Joint Designs: Style 200B, 100B, 300B, 400B, and 500B

Fabric Expansion Joint Movement Illustration
High Temperature Clean Air
Similar Applications: Fossil Fired Power Plant (Air Heater to Coal Pulverizers), Cement (Clinker Cooler to Heat Exchanger)

Typical Conditions: 600°F to 750°F operating temperature, 5″ to 80″ WG pressure, clean air media, boiler growth contributes to large axial or lateral expansion joint movements depending on the orientation of the joints.

Common Design Features:

Fabric Belt: High temperature fabric belt. (FLEXXCEL HT1, HT3, or HT5 depending on maximum temperature.)

Accumulation barrier: 6″ minimum standoff and outboard belt attachment flanges to dissipate heat.

Liner: contoured around expansion joint to allow heat dissipation.

Recommended Expansion Joint Designs: Style 200W, 100W, 300W, 200B, and 100B

Fabric Expansion Joint Movement Illustration
Dirty Flue Gas
Similar Applications: Cement Plant (Preheat Tower), Refinery (CO Boiler to Precipitator)

Typical Conditions: 250°F to 500°F operating temperature, -35″ to -50″ WG pressure, flue gas with possibly fly ash carryover through air heater, moderate thermal movements in ducting.

Common Design Features:

Fabric Belt: Un-insulated fabric material. (FLEXXCEL HD7)

Accumulation barrier: Fills expansion joint cavity to minimize the accumulation of particulate.

Liner: Flow liner to retain the accumulation barrier and protect the belt from abrasion.

Recommended Expansion Joint Designs:Style 200W, 100W, 300W, 600W, and 700W

Fabric Expansion Joint Movement Illustration
Turbulent Flue Gas, Wet Gas
Similar Applications: Fossil Fired Power Plant (Re-heater to Chimney), Pulp and Paper Plant (Induced Draft Fan to Chimney), Refinery (Steam Generator to Stack)

Typical Conditions: 250°F to 500°F operating temperature, -35″ to +50″ WG pressure, minimal particulate downstream of precipitator, potential for wet conditions.

Common Design Features:

Fabric Belt: At fan locations, the belt material should have a high resistance to flutter. (FLEXXCEL FF1)

Accumulation barrier: Bolt-in design for attachment to equipment or duct flanges. (If equipment or duct flanges are not present, weld in designs are recommended.)

Liner: Flow liner to reduce turbulence/flutter of fabric belt material.

Recommended Expansion Joint Designs: Style 200B, 100B, 300B, 400B, and 500B

Fabric Expansion Joint Movement Illustration
Low Temperature Wet Flue Gas
Similar Applications: Fossil Fired Power Plant (Scrubber Bypass to Stack and Scrubber to Re-heater), Pulp and Paper Plant (Scrubber Inlet and Scrubber to Re-heater)

Typical Conditions: 120°F to 350°F operating temperature, +5″ to +15″ WG pressure, minimal particulate, highly corrosive wet gas, minimal movements.

Common Design Features:

Fabric Belt: Fabric material should have the maximum chemical barrier due to corrosive conditions. (FLEXXCEL HC40)

Recommended Expansion Joint Designs: Style 100W, 300W, 100B, and 500B

Fabric Expansion Joint Movement Illustration
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