Combustion Technology Portfolio

Flue Gas Recirculation

The use of a varied percentage of the flue gases to reduce the burner flame temperature, injecting them into the secondary air, is a “dilution” technology whose scope is to obtain a “softer” and “colder” flame by decreasing the excess air.
By reducing the concentration of oxygen, the flame temperature is reduced and so is the formation of NOx originating from heat.
Another effect of flue gas recirculation is to minimize the CO levels becouse of its re-introduction into the combustion cycle.
Naturally, precautions have to be taken to ensure flame stability as well as for the presence of particles inside the burner that need to be filtered

The technique is typically used in U-shaped radiant tubes, as  in the figure, which shows the  ESA patent for the configuration with :
Radiant Tube burner, SIC PLUG IN recuperator,  FGR recirculation valve and valve for eliminating CO at minimum.

News & Events

2021 PRICE INCREASES

2021 PRICE INCREASESDear Sirs We hereby inform you that the prices reserved for you will undergo variations. The increases in the costs of raw materials, now widespread worldwide, [more]

ESA will be exhibiting at ADIPEC 2021 trade fair

ESA will be exhibiting at ADIPEC 2021 trade fairFrom 15 to 18 November 2021 we will participate in the ADIPEC fair, come and visit us at stand [more]

Hydrogen test on regenerative burners

Hydrogen test on regenerative burnersOne pair of ESA REGE-6-NxT regenerative burners (the most efficient series of High Temperature air/fuel burners) was configured to use H2/NG mixture with a [more]

ESA will be exhibiting at ECOMONDO 2021 trade fair

ESA will be exhibiting at ECOMONDO 2021 trade fairFrom 26 to 29 October 2021 ESA will be present at the ECOMONDO fair at the stand of our SIAD MI Group. Come visit! HALL [more]