An economizer recovers residual heat from combustion gases that are normally lost through the chimney or purges. This heat is used to preheat the boiler feed water before it enters the steam generator. By recovering this heat, the boiler requires less fuel to heat the water to the set temperature, leading to greater energy efficiency.
There's a reduction in fuel consumption. Burning less fuel due to increased efficiency results in lower carbon dioxide emissions, which is beneficial for the environment and can help in meeting environmental regulations such as reducing CO2 emissions.
Reducing the temperature of the combustion gases lowers the temperature of the gas ducts and increases their lifespan. This can prolong the boiler's life. By preheating the feed water, the risks of boiler damage due to thermal shocks are reduced. Operating with an economizer also usually involves continuous water feeding to the boiler, which better stabilizes the boiler pressure and can improve the quality of the steam produced.
While installing an economizer has an initial cost, savings in fuel and operational costs can result in a return on investment in a relatively short period.
ATTSU has created customized systems to optimize thermal resources, achieving fuel savings of more than 10%. These systems do not affect plant operation and have quick economic payback periods. Adding an ECO economizer to an ATTSU boiler can result in up to 6% energy savings. These uniquely designed economizers feature removable batteries for easy maintenance, are insulated with rock wool to minimize thermal losses, and are manufactured with different materials according to needs. Additionally, in certain boilers, the economizer can be internally placed, saving space and adapting in dimensions according to the installation.