Spiral Wound Universal Pressure Boiler (SWUPTM)

Having supplied more than 165 supercritical boilers, including the world’s first boiler using supercritical technology in 1957, you can trust B&W to deliver the highest quality steam generation equipment.
Our proven supercritical designs can meet today’s demand for highly efficient, variable pressure steam conditions.

Design features

A once-through boiler for supercritical applications, usually applied to systems with a capacity of 400 MW or larger; the design features a water-cooled dry-bottom furnace, superheater, reheater, economizer, and air heater components — designed for both base load and full boiler variable pressure load cycling operation as well as on/off cycling operation.

Capacity, steam output

From 2,000,000 lb/h (252 kg/s) to more than 10,000,000 lb/h (1260 kg/s)

Operating pressure

Supercritical, usually at 3200 psi (22 MPa) throttle pressure with 5% overpressure; higher pressures available

Superheater steam temperatures

As required, currently in the 1100F (595C) range


Pulverized coal

Spiral Wound Universal Pressure Boiler (SWUP)

Primary Air Fan

Air Heater

Improves boiler performance.


Low NOx Burners

B&W has sold low NOx combustion systems for more than 120,000 MW of generating capacity in both new and retrofit boiler applications.

Circulation Pump

Forced Draft Fan


Overfire Air Ports

B&W Roll Wheel Pulverizers

B&W has sold over 1,100 Roll Wheel pulverizers worldwide.


Selective Catalytic Systems

Air quality control systems designed to eliminate or reduce emissions from the flue gas stream.



B&W Projects New Build


Upgrades and Retrofits by B&W


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