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Liner Materials for Steel Stacks

Often a steel stack design is driven by the requirements of the liner. Proper liner selection can be made only after the operating conditions have been investigated. The operating conditions consist of the flue gas composition, flow rate, and temperature. Selection of the proper liner material or combination of materials will ensure the proper service life of the liner.

HVAC Carbon Steel Boiler Stack - Steel Stacks - Hoffmann, Inc.

Materials that can be used for liner design are the following:

Carbon Steel
Stainless Steel
Gunite Coating
Refractory Lining
Vinylester Llining
Fiberglass Reinforced Plastic (FRP)
Glass reinforced plastic (GRP)
Acid Resistant Brick
Glass Block
C-276 and or Alloys

Carbon Steel

Carbon steel liners:

Have a higher temperature range than FRP
Are typically lower cost than stainless steel
Are used with dryer exhaust gases

Stainless Steel

Stainless steel liners:

Have a higher temperature range than carbon steel
Are used in moderately corrosive environments

FRP

You would use an FRP liners when you have:

a highly corrosive environments
a heavily saturated flue gases
a lower temperature range

$Cast-in-Place Refractory Liner – Hoffmann, Inc.$

Glass Block

Glass block liners:

Are used in severely corrosive environments
Withstand high operating temperature
Requires onsite installation after outer shell is erected

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