Air Heaters

B&W can add, redesign or upgrade air heaters to solve boiler operating performance problems and improve unit efficiency. Solutions utilizing regenerative (rotary) or recuperative (tubular or plate) air heaters can be customized to address specific needs. We can also provide associated flue and duct, structural and controls modifications that accompany air heater upgrades.

Our air heater capabilities include:

Addition of air heater surface to improve unit performance
Air heater surface cleaning equipment
Complete computational modeling capabilities to solve air or flue gas plugging problems
Fire suppression systems

New Build

We consistently demonstrate the ability to successfully execute innovative solutions for our customers, from new equipment to large, complex full-scope engineering and construction projects.

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Upgrades / Retrofits

Modifying, improving and maintaining existing equipment are vital considerations for the long-term viability and profitability of all operations.

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Parts / Services

An extensive network of worldwide regional service centers, field service engineers and technical support personnel are available to provide the customized service and aftermarket solutions for your requirements.

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Project / Case Feature Item

Project:

Boiler and Air Heater Supply in Hastings, Nebraska

Scope:

Coal-fired internal recirculation circulating fluidized-bed (IR-CFB) boiler from outlet of coal bunkers to outlet of tubular air heater including:

FD fan and motor
Tubular air heater
Steam coil air heater

Results:

Low furnace temperatures, staged combustion and SNCR system limited NOx emissions.
Unique two-stage solids collection system using U-beams and multi-cyclone dust collector provided superior collection efficiency. The recycling of collected solids improved combustion efficiency and limestone utilization.
The U-beam and solids collection system required significantly less maintenance than hot cyclones.

Related Publications

BR-1855 An Alternate Approach to Flue Gas Heat Recovery

PS-249 Replacement Regenerative Air Heater Surface