Rotary regenerative air preheaters have a much reduced size and cost relative to recuperative tubular or plate heat exchangers.
Howden’s air preheaters are engineered to meet the demands of your application. We manufacture our air preheaters in modern facilities based around the world and produce bisector, trisector and quadsector arrangements. We can also provide packaged solutions in either vertical or horizontal alignment.
Our proven VN sealing system ensures that Howden heaters have minimal leakage and thus significantly reduce your operating costs. Other benefits of the VN design include a central drive system, advanced cleaning systems and enhanced maintainability.
Using specialised software we can model and accurately predict the operational and cost advantages of our proposals. Environmental considerations and energy costs make it more important than ever to ensure air preheaters are working at optimised levels.
Why choose our Air Preheaters?
Gas Gas Heater
Howden supplied some of the world’s first FGD systems in 1934, and since then we have become a leading supplier of gas gas heaters.
The Howden VN design concept is ideally suited to the FGD Gas Gas Heater application. Judicious selection of materials, together with advanced design features result in a heat exchanger with exceptional resistance to the cool, moist acidic conditions of FGD plant, where fouling and corrosion are a constant challenge.
Gas gas heaters can be custom designed and optimised to suit arrangement and client preference. If the GGH is being mounted directly on top of the FGD Absorber, construction of the GGH at ground level and a single lift can reduce costs. We are also able to install a tail end SCR gas preheater if this is required due to the specific set up of your power station – you can read more about this in our brochure.
Why choose our Gas Gas Heaters?
One of our strengths is our experience, we have thousands of successful installations to draw upon.
Howden’s Pre-engineered Air Preheaters & Gas Heaters are based on the original regenerative heater design developed in collaboration with the inventor in 1923. The design has been continually enhanced to reach our industry leading levels of thermal efficiency and performance enabling our customers’ vital processes. This underlines Howden’s vision of supporting the world’s industries with sustainable solutions.
The pre-engineered product range provides operators looking to recover energy from fired equipment a highly efficient, low maintenance solution in a compact footprint. It can handle flue gas flows of under 50 tonnes per hour to around 200 tonnes per hour and recovered energy can extend to over 15MW depending on gas temperature drop.
The heaters are suitable for integration into new plant development as well as replacements of alternative technologies within operational sites. All heaters are fully supported by Howden’s global pre-sales and aftermarket capabilities to ensure ease of project engineering and reliable long-term performance.
Very low rotational speed requiring limited maintenance
Compact design benefitting installation requirements
Heat transfer not affected by fouling enabling performance to be maintained even when using 'dirty' fuels
Global service support minimising downtime and ensuring reliable long-term performance
Available in both vertical and horizontal configurations, virtually every parameter can be modified or changed to suit the application and duties of the heater and the preferences of the customer.