Economizers are used to recover the useful heat in exhaust or flue gas before it is released into the atmosphere and transfer it to the steam production cycle. This increases the overall boiler thermal efficiency, resulting in more steam with less fuel. Boiler efficiency increases by approximately 1% for every 40°F the flue gas is cooled. It is widely accepted in the industry that economizers provide a good return on investment and also help reduce carbon emissions.
Utility Boiler Economizer
Chanute produces economizers for utility boilers, which includes boilers fueled by coal, wood, oil, or other solid fuels to produce electricity from the boiler's high pressure steam.
These economizers are usually located in the back pass of the boiler and oriented with the tubes running horizontally. The boiler feedwater runs through the economizer circuits in the opposite direction of the gas flow (called counterflow).
Bare tubes are typically utilized in order to minimize ash fouling, but some boiler OEM's design their economizers with finned tubes, either spiral or long finned. Chanute can produce economizer elements with either bare, spiral finned, or long finned tubes.
In addition to the economizer pendants, Chanute can design the support system and inlet / outlet headers along with the associated piping.
Optimus offers a complete range of packaged economizers for industrial boilers. Each economizer is custom designed for the application. Whether the gas is clean burning or subject to fouling Optimus will select the proper tube configuration, metallurgy and heat transfer extended surface for the application.
Economizers manufactured in our Chanute facility receive the benefit of onsite tube finning, innovative bending technology and superior pressure part welding quality.
Sulfuric Acid Plant Economizer
Optimus has been designing and manufacturing economizers for sulfuric acid plants since 1993 and has the necessary experience not only to design them, but to fabricate them with the highest standards of quality and workmanship. Plant operators want and depend on reliable equipment and Optimus/Chanute strives to provide the best in the industry. Because Chanute constantly fabricates tubular boiler equipment for the power and petrochemical industries, our ASME-certified pressure part welders are held to a higher standard of performance, and that workmanship goes into all of our products because we don't know any other way.
Chanute has unique manufacturing capabilities that the Optimus engineers take full advantage of when designing sulfuric acid plant economizers and superheaters. Often this allows the Optimus units to be configured for higher heat transfer efficiencies which results in a reduced surface area requirement and, consequently, a lower-priced product.Learn More
HRSG Economizer & Preheaters
Economizers and feed water preheaters for today's HRSG modules are configured with vertical fintubes connected with return bends or headers with cross over piping. Chanute has fabricated economizer coils for virtually all of the HRSG OEMs and understands the unique features of each. We have significant experience in providing upgrades such as duplex stainless for dew point corrosion or redesigning return bend type economizers to be vented.
Chanute is a one-stop shop for economizer fabrication because we perform all manufacturing, from finning the fintubes to fabricating the headers, and assembling the coil bundle. This eliminates the need for your inspector to travel to multiple shops and cities to perform quality audits. And if you need economizer subcomponents such as headers, bent stubs, or replacement fintubes, Chanute is standing by ready to provide you with the hardware you need.