Economizers for Sulfuric Acid Plants
Engineered Waste-Heat Recovery Solutions for Improved Reliability and Thermal Efficiency.Economizers for Sulfuric Acid Plants
Engineered Waste-Heat Recovery Solutions for Improved Reliability and Thermal Efficiency.Built for Reliable Heat Recovery.
CG Thermal’s economizers are engineered for the demanding conditions of sulfuric acid production. Designed to recover heat from flue gas and preheat boiler feedwater, our economizers incorporate specialized design features that help minimize corrosion, improve thermal efficiency, and extend equipment service life.
Engineered for Performance. Designed for Longevity.
Sulfuric acid production presents some of the most demanding operating conditions for waste-heat recovery equipment. CG Thermal combines extensive heat transfer expertise with specialized economizer designs to address common challenges associated with corrosion, gas stagnation, and equipment reliability.
Our economizers recover energy from flue gas at approximately 500–600°F to preheat boiler feedwater, improving overall thermal efficiency. Unlike conventional designs, CG Thermal incorporates seal-welded tubes, non-header-end pass-through tubesheets, and open louvers to minimize stagnant areas and reduce corrosion potential.
Additional protection comes from our Engineered Flow Ventilation design, which promotes circulation within the return header box to help mitigate external U-bend corrosion and extend equipment service life.
Design Features That Make a Difference
Designed to improve connection integrity and support long-term reliability.
Non-header-end construction helps address corrosion-prone areas.
Helps reduce stagnation and external U-bend corrosion within the return header box.
Standard Economizer Configurations
CG Thermal offers three standard economizer configurations designed around common sulfuric acid plant capacities. These pre-engineered designs help reduce engineering time and delivery lead times while providing proven heat recovery performance. Custom economizers are also available for applications with unique process conditions and operating requirements. Ready for the next step? Contact our engineering team to discuss your application today!
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Download the Economizer Bulletin
Enter your contact information for immediate access to our Economizers product bulletin, featuring technical specifications, innovative design features, and standard configurations for sulfuric acid waste-heat recovery applications.
Frequently Asked Questions (FAQ)
What does an economizer do in a sulfuric acid plant?
An economizer recovers heat from flue gas and uses it to preheat boiler feedwater. By capturing energy that would otherwise leave the system, it helps improve the plant’s overall thermal efficiency.
Why are sulfuric acid plant economizers vulnerable to corrosion?
Corrosion can develop where operating conditions allow acidic condensation or where stagnant gas creates localized problem areas. Temperature, gas composition, flow distribution, and equipment design all influence corrosion risk.
How does CG Thermal’s economizer design address common failure points?
CG Thermal incorporates seal-welded tubes, non-header-end pass-through tubesheets, and an open louver design. These features help address connection integrity, stagnant areas, and corrosion-prone locations.
What is Engineered Flow Ventilation?
Engineered Flow Ventilation is CG Thermal’s design for promoting circulation within the economizer’s return header box. It helps reduce stagnation and mitigate external U-bend corrosion.
Does CG Thermal offer standard economizer configurations?
Yes. CG Thermal offers three standard configurations designed around common sulfuric acid plant capacities. Our engineers can help evaluate which configuration fits your operating requirements.
Can an economizer be custom-designed for my plant?
Yes. CG Thermal designs custom economizers for applications outside its standard configurations. The design can account for your process conditions, heat-recovery requirements, and installation constraints.
Can CG Thermal help replace an existing economizer?
Contact our engineers to discuss your existing equipment and replacement goals. Available drawings, operating data, and information about previous failures can help us evaluate a suitable design for your application.
What information is needed to evaluate an economizer application?
Useful starting information includes plant capacity, flue-gas flow and temperatures, boiler-feedwater conditions, and the required heat duty. Existing equipment drawings, space limitations, and corrosion or maintenance history also help our engineers assess your needs.
Discuss Your Economizer Application
Tell us about your sulfuric acid plant’s heat-recovery needs. Our engineers can help evaluate standard economizer configurations or a custom design for your process conditions.