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Liner Materials for Concrete Chimneys

Often chimney 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.

Liner Materials Fabrication - Hoffmann, Inc.

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

Carbon steel
Stainless Steel
Gunite coating
Refractory lining
Vinylester lining
Fiberglass reinforced plastic (FRP)
Glass reinforced plastic (GRP)
Acid resistant brick
Glass block
C-276 and or alloys

Carbon Steel

Carbon steel liners are:

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

$Gunite Refractory Liner – Concrete Chimneys – Hoffmann, Inc.$

Gunite Refractory

Gunite refractory liners are used in:

mild chemical environments
mild to severe temperatures

Brick Liner – Concrete Chimneys – Hoffmann, Inc.

Brick Liners

Brick liners are used in:

moderate corrosive environments
mild to severe temperatures

Stainless Steel

Stainless steel liners are used in:

a higher temperature range than carbon steel
moderately corrosive environments

FRP

FRP liners are used in:

highly corrosive environments
heavily saturated flue gases
a lower temperature range

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

Cast-in-Place Refractory

Cast-in-place refractory liners are used in:

mild chemical environments
mild to severe temperatures

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