‘Super Boiler’ achieves higher efficiency through the recovery of waste heat
By Gerald Parkinson |
An advanced heat recovery system (AHRS) that boosts the fuel-to-steam efficiency of firetube boilers by as much as 15% will be produced by Cannon Boiler Works Inc. (New Kensington, Pa.; www.cannonboilerworks.com) through a license agreement with the Gas Technology Institute (GTI, Des Plaines, Ill.; www.gastechnology.org). Cannon expects to have its first commercial units available late this year, for incorporation into new boilers or retrofitting onto existing boilers.
The technology has been proven for high-pressure-steam systems by three field demonstrations at various types of industrial plants over the past three years, says Curt Bermel, GTI’s business development manager. The complete system, which GTI calls “Super Boiler,” uses a transport membrane condenser (TMC) to capture and use sensible and latent waste heat via the water vapor from fluegas. The Super Boiler consists of a two-pass, high-pressure-steam firetube boiler and an AHRS (diagram), an integrated unit that includes the TMC and low- and high-pressure economizers. Fluegas flows through the economizers, where sensible heat is removed, then passes to the TMC for recovery of sensible and latent heat.
The TMC consists of hundreds of nanoporous ceramic…